Mercury 18 (2 CYL.) (International) (0N055285 & Up) Outboard Motor Parts Diagram & Catalog – Free PDF Download

by JLM Marine 30 Apr 2025 0 Comments

Mercury 18 (2 CYL.) (International) Outboard Motor Parts Diagram & Catalog – Free PDF Download

Accessories

Below is the parts list for Mercury 18 (2 CYL.) (International) Accessories:

Position No.	Part Name	OEM Number	Supersedes
1	DRAG LINK KIT	803795A1
2	BOLT	10-8230423
3	WASHER	12-16192
4	COLLAR	23-803796
5	NUT, Nylon	11-95374
6	WASHER	12-9539210
7	NUT, Nylon	11-161473
8	CAP	853825
9	SPACER	23-853826
10	IGNITION CHECKER	803799A1
11	TEST PROP	48-803800
12	LOCK KIT, Reverse	803797A1
13	RECTIFIER KIT	8M0123939
-	RECTIFIER	8538116
-	NOT SOLD SEPARATE, Bracket-Rectifier	NSS
-	GROUND WIRE	84-803820
-	CLAMP	54-8M0130961
-	NOT SOLD SEPARATE, Extension Harness	NSS
-	CLAMP	54-813275
-	CAP	853741
-	GROMMET	25-162313
-	NOT SOLD SEPARATE, Screw	NSS
-	LOCKWASHER	13-16079
-	NUT, Stainless Steel	11-16081
-	BOLT	10-8230426
14	CABLE ASSEMBLY, Yellow	84-853799A4
15	CABLE ASSEMBLY, White	84-853799A3
16	HANDLE, (0.8 Meters) (0.8M)	853828
16	HANDLE, (1.0 Meters) (1.0M)	8538281
17	TEMPERATURE GAUGE, Water	79-804632T01	79-804632A 1
18	BULB	88-804634
19	DAMPER	802613
20	BRACKET	804635
21	NUT	11-802617
22	LOCKWASHER	13-168181
23	SENSOR, Water Temperature	804636
24	LEAD WIRE	84-804637

Air Silencer and Fuel Lines

Below is the parts list for Mercury 18 (2 CYL.) (International) Air Silencer and Fuel Lines:

Position No.	Part Name	OEM Number	Supersedes
1	CARBURETOR	3303-803687T01	3303-803687A 1
2	SNAP, Link Rod	803694
3	GASKET	27-803699001	27-803699
4	SILENCER, Air	803697
5	BOLT	10-163291
6	WASHER, Stainless Steel	12-16826
7	SCREW	10-803698
8	GROMMET	25-16226
9	LEVER, Choke	803696
10	PIN (Plastic)	17-16085
11	ROD, Choke	8M0155125
12	FILTER ASSEMBLY, Fuel Comment: SN# 0N072166 & Below	35-8M0088825	35-853733T03, 35-853733T02, 35-853733A 2, 35-898101T68 SN# 0N072166 & Below
12	FILTER ASSEMBLY, Fuel Comment: SN# 0N072167 & Up	35-8M0088825	35-853733T03, 35-853733T02, 35-853733A 2, 35-898101T68 SN# 0N072167 & Up
13	O-RING Comment: SN# 0N072166 & Below	25-8518151
14	FILTER Comment: SN# 0N072166 & Below	35-8537331
14	FILTER Comment: SN# 0N072167 & Up	35-853733002
15	O-RING Comment: SN# 0N072166 & Below	25-851815
15	O-RING Comment: SN# 0N072167 & Up	25-851815006
16	CUP Comment: SN# 0N072166 & Below	8537351
16	CUP Comment: SN# 0N072167 & Up	853735002
17	WASHER	12-8M0135942
18	NUT	11-400213
19	TUBING, (185 mm)	32-95394010
20	TUBING, (185 mm)	32-95394010
21	CLIP, Stainless Steel	54-95395
22	BUSHING	23-163362
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Carburetor

Below is the parts list for Mercury 18 (2 CYL.) (International) Carburetor:

Position No.	Part Name	OEM Number	Supersedes
1	CARBURETOR	3303-803687T01	3303-803687A 1
2	SCREW	10-8M0054702
3	SPRING, (11 mm)	24-162641
4	SCREW, Adjusting	10-803690
5	O-RING	25-161783
6	SCREW	10-809571003	10-855542 1
7	COVER, Carburetor	8555401
8	GASKET	27-8555412
9	JET, Pilot	80,803689	16251 4
10	PLUG	19-855566
11	MAIN NOZZLE	803692
12	JET, Main	110,803688
13	FLOAT NEEDLE	162545
14	FLOAT	162532
15	PIN	17-162561
16	SCREW	10-8536981
17	GASKET	27-855567
18	FLOAT BOWL	803691
19	SCREW, Drain	10-8M0054703	10-16261 3
20	GASKET	27-8M0224378
21	SCREW	10-162603
22	GASKET	27-8555691
23	DIAPHRAGM	8537312
24	SCREW	10-851813
25	CHECK VALVE	21-851812
26	NUT	11-851814
27	HOUSING, Pump	8537291
28	GASKET	27-855569
29	COVER	855568	803693
30	SCREW	10-8M0062252
31	GROMMET	25-8M0065583	25-895112001
-	REPAIR KIT, Carburetor	8M0039870	803826A 1
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Clamp Bracket

Below is the parts list for Mercury 18 (2 CYL.) (International) Clamp Bracket:

Position No.	Part Name	OEM Number	Supersedes
1	CLAMP BRACKET, Starboard Comment: SN# 0N080618 & Below	8M0059728	3406-803769 SN# 0N080618 & Below
1	CLAMP BRACKET, Starboard Comment: SN# 0N080619 & Up	8M0059754
2	CLAMP BRACKET, Port Comment: SN# 0N080618 & Below	8M0059734	3406-803770 SN# 0N080618 & Below
2	CLAMP BRACKET, Port Comment: SN# 0N080619 & Up	8M0059755
3	CAP NUT	11-85372214
4	TILT TUBE	898101191	853769
5	NUT, Nylon	11-853722029	11-853722 13
6	THRUST ROD	16198004
7	SPRING	24-815093003
8	THUMB SCREW ASSEMBLY, 1/2 Inch Thread Size	10-16200A1
9	PAD	12-95379
10	NUT	11-400212
11	WASHER, Stainless Steel	12-16826
12	BOLT, (M6 x 20)	10-167051
13	DISTANCE PIECE Comment: SN# 0N060052 & Below	898101938	803771002, 803771 SN# 0N060052 & Below
13	DISTANCE PIECE Comment: SN# 0N060053 & Up	898101938	803771002, 803771 SN# 0N060053 & Up
14	BOLT	10-879194310	10-16126 3, 10-823042056
15	WASHER	12-16192
16	NUT	11-879194337	11-853722023
17	ANODE	97-823913Q	823913, 95271

Cowling, 0N159949 and below

Below is the parts list for Mercury 18 (2 CYL.) (International) Cowling, 0N159949 and below:

Position No.	Part Name	OEM Number	Supersedes
1	TOP COWL ASSEMBLY, Black - Without Decals Comment: 15	100-8M0073908	114-803792A10, 114-803792A 1 15
1	TOP COWL ASSEMBLY, Silver - Without Decals Comment: 15	100-8M0073909	114-803792A11, 114-803792A 2 15
1	TOP COWL ASSEMBLY, Black - Without decals Comment: 9.9/18	100-8M0073910
2	CAP, Cowl Comment: (Black)	8M0129134
2	CAP, Cowl Comment: (Silver)	8037931
3	NUT, (M6) Stainless Steel	11-400212
4	LOCKWASHER, (M6)	13-400256
5	WASHER, Stainless Steel	12-953921
6	SEAL, Rubber	851851004
7	SEAL, Rubber	25-162281
8	BOTTOM COWL	100-8M0129289
9	GROMMET	25-162311
10	GROMMET	25-162312
11	SEAL, Oil	26-8036675
12	HOOK	162221
13	BOLT, (M6 x 14)	10-16223
14	WASHER, Stainless Steel	12-953921
15	WAVE WASHER	13-16221
16	WASHER	12-953922
17	HOOK LEVER	162186
18	SEAL	26-16219
19	BUSHING	23-163365
20	BOLT, (M6 x 20)	10-167051
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Cowling, 0N159950 and up

Below is the parts list for Mercury 18 (2 CYL.) (International) Cowling, 0N159950 and up:

Position No.	Part Name	OEM Number	Supersedes
1	TOP COWL ASSEMBLY, Black - Without Decals Comment: 15	114-8M0073651	114-8M0063886, 100-8M0074337 15
1	TOP COWL ASSEMBLY, Silver - Without Decals Comment: 15	100-8M0128852
1	TOP COWL ASSEMBLY, Black - Without Decals Comment: 9.9/18	100-8M0132366
2	CAP, Cowl Comment: (Black)	8M0129134
2	CAP, Cowl Comment: (Silver)	8037931
3	NUT, (M6) Stainless Steel	11-400212
4	LOCKWASHER, (M6)	13-400256
5	WASHER, Stainless Steel	12-953921
6	SEAL, Rubber	851851004
8	BOTTOM COWL	100-8M0129289
9	GROMMET	25-162311
10	GROMMET	25-162312
11	SEAL, Oil	26-8036675
12	HOOK	162221
13	BOLT, (M6 x 14)	10-16223
14	WASHER, Stainless Steel	12-953921
15	WAVE WASHER	13-16221
16	WASHER	12-953922
17	HOOK LEVER	162186
18	SEAL	26-16219
19	BUSHING	23-163365
20	BOLT, (M6 x 20)	10-167051
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Crankshaft, Pistons and Connecting Rods

Below is the parts list for Mercury 18 (2 CYL.) (International) Crankshaft, Pistons and Connecting Rods:

Position No.	Part Name	OEM Number	Supersedes
1	CRANKSHAFT KIT	8M0047749	474-803672A09, 474-803672A04, 474-803672A 1
2	PIN, Crank	8M0074253	803673
3	CRANKSHAFT, A	474-803672A02	474-803672 1
4	BEARING, Needle	31-803675
5	CONNECTING ROD	629-803674T	629-803674
6	CRANKSHAFT, B	474-8M0090845	474-803672 2
7	BEARING, Ball	30-160494
8	SEAL	26-8036672
9	PIN	17-161791
10	CRANKSHAFT, C	474-8M0090846	474-803672 3
11	CRANKSHAFT, D	474-8036724
12	BEARING, Ball	30-160494
13	SPACER	23-853715
14	C CLIP	53-853714	53-803676
15	KEY	28-160531
16	BEARING, Roller	31-16052
17	PISTON ASSEMBLY Comment: (Standard)(9.9)	700-8M0103788
17	PISTON ASSEMBLY Comment: (0.5 Oversize)(9.9)	700-8M0103787
17	PISTON ASSEMBLY Comment: (Standard)(15/18)	700-8M0103789
17	PISTON ASSEMBLY Comment: (0.5 Oversize)(15/18)	700-8M0103790
17	PISTON Comment: (Standard)(9.9)	779-803677T04	779-803677T02, 779-803677002 (Standard)(9.9)
17	PISTON Comment: (0.5 Oversize)(9.9)	779-803677003
17	PISTON Comment: (Standard)(15/18)	779-803677T	779-803677 (Standard)(15/18)
17	PISTON Comment: (0.5 Oversize)(15/18)	779-803677T01	779-803677 1 (0.5 Oversize)(15/18)
18	RING SET, Piston Comment: (Standard)(9.9),Services whole engine	39-803678A07
18	RING SET Comment: (Standard)(9.9),Services one piston	39-8M0065495
18	RING SET, Piston Comment: (0.5 Oversize)(9.9),Services whole engine	39-803678A08
18	RING SET, Piston Comment: (0.5 Oversize)(9.9),Services one piston	39-8M0080353
18	RING SET, Piston Comment: (Standard)(15/18),Services whole engine	39-803678A1
18	RING SET Comment: (Standard)(15/18),Services one piston	39-8M0065496
18	RING SET, Piston Comment: (0.5 Oversize)(15/18),Services whole engine	39-803678A2
18	RING SET, Piston Comment: (0.5 Oversize)(15/18),Services one piston	39-8M0080352
19	CLIP, Component of Piston Assy	53-16057
20	PIN, Piston, Component of Piston Assy Comment: (15/18)	41-803680002	41-803680 (15/18)
20	PIN, Piston, Component of Piston Assy Comment: (9.9)	41-825713002	41-825713001 (9.9)
-	POWERHEAD ASSEMBLY Comment: (15/18)	8M0046405	803679A10, 803679A 4 (15/18)
-	POWERHEAD ASSEMBLY Comment: (9.9)	8M0047750	803679A08, 803679A06 (9.9)

Cylinder Block

Below is the parts list for Mercury 18 (2 CYL.) (International) Cylinder Block:

Position No.	Part Name	OEM Number	Supersedes
1	CYLINDER BLOCK Comment: (15/18)	878-803660A1
1	CYLINDER BLOCK ASSEMBLY Comment: (9.9)	878-803660A06
2	NIPPLE	22-8129601
3	CONNECTOR	22-8M0064617	22-812960, 22-95301
4	PIN, Dowel	17-16119
5	BOLT	10-166951
6	WASHER	12-16826
7	CHECK VALVE	21-16700
8	SPRING	24-8130282
9	PLUG	19-803661
10	NIPPLE	22-812960006
11	BOLT, (M6 x 16)	10-16832
12	ANODE	97-823913Q	823913, 95271
13	CYLINDER HEAD Comment: (15/18) Design I	979-803662
13	CYLINDER HEAD Comment: (9.9)	979-803662003
13	CYLINDER HEAD Comment: (15/18) Design II	900-8M0069700
-	WELCH PLUG	19-898101264
14	GASKET Comment: (15/18)	27-8M0141796
14	GASKET Comment: (9.9)	27-803663034	27-803663018 (9.9)
15	SCREW KIT	10-16830A1
16	CAP	8537052
17	CLAMP	54-803563005	54-803563 1
18	GASKET	27-8M0214960
19	THERMOSTAT	8M0228411
20	SPARK PLUG Comment: (NGK#B7HS-10)	33-8M0181925
20	SPARK PLUG, (NGK# BR7HS-10)	33-8M0181925
21	BOLT Comment: SN# ON159949 & Below	10-803664	10-8M0075295 SN# ON159949 & Below
21	BOLT Comment: SN# ON159950 & Up	10-8M0106721	10-16695 2, 10-8M0065483 SN# ON159950 & Up
22	WASHER Comment: SN# ON159949 & Below	12-4002217
22	WASHER Comment: SN# ON159950 & Up	12-16192
23	COVER, Exhaust - Outer	803666
24	GASKET	27-803663024	27-803663 1
25	COVER, Exhaust - Inner	8M0065485	803666 1
26	GASKET	27-803663025	27-803663 2
27	SCREW, (M6 x 25)	10-8M0204707
28	WASHER	12-16826
29	THRUST PLATE, Upper	803671
30	THRUST PLATE, Lower	8036711
31	O-RING	25-803670
32	SEAL, Oil	26-8M0065585	26-803667 1
33	GASKET	27-803663020	27-803663 6
34	PIN, Dowel	17-16119
35	CLIP	54-95224
36	TUBING, (280 mm)	32-95223008
37	TUBING, (220 mm)	32-95223009
38	CLIP	54-95332002
39	O-RING	25-853709
40	SEAL, Oil	26-803667
41	END CAP, Upper	1100-803668
42	SET RING	803669
43	GUIDE PLATE	853711
44	BOLT	10-166953
45	CHECK VALVE	21-42657A3
-	KIT, Ground wire/Head bolt/Washer Comment: SN# ON159950 & Up	8M0075401
46	GROUND WIRE Comment: SN# ON159950 & Up	84-853740
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)
-	POWERHEAD ASSEMBLY Comment: (15/18)	8M0046405	803679A10, 803679A 4 (15/18)
-	POWERHEAD ASSEMBLY Comment: (9.9)	8M0047750	803679A08, 803679A06 (9.9)

Driveshaft Housing

Below is the parts list for Mercury 18 (2 CYL.) (International) Driveshaft Housing:

Position No.	Part Name	OEM Number	Supersedes
1	HOUSING, Driveshaft Comment: (Short)	1500-8M0232661
1	HOUSING, Driveshaft Comment: (Long)	1500-8M0121378
2	STUD	16-879194301	16-853718004, 16-879194299, 16-811653 2
3	BOLT	10-8M0106720
4	WASHER	12-8M0135942
5	GASKET	27-8M0231496
6	PIN, Dowel	17-16119
7	GROMMET	25-803736
8	GASKET	27-803728003	27-803728
9	BOLT	10-823042
10	TUBE, Exhaust	803727
11	BOLT	10-8230427
12	GROUND WIRE	84-898101089	84-803779, 84-853740 1
13	BOLT	10-879194310	10-16126 3, 10-823042056
14	RUBBER MOUNT, Side	803775
15	RUBBER MOUNT, Front	8037751
16	COVER	803776
17	WASHER	12-8M0135942
18	NUT	11-879194337	11-853722023
19	BOLT, (M6 x 20)	10-167051
20	ANODE	97-823913Q	823913, 95271
21	COVER	8037761
22	BOLT	10-879194309	10-823042057
-	GASKET SET, Lower Unit	27-8M0082884	27-8M0075042, 27-803728A02, 27-803728A99
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Electric Start Components

Below is the parts list for Mercury 18 (2 CYL.) (International) Electric Start Components:

Position No.	Part Name	OEM Number	Supersedes
-	STARTER MOTOR KIT, Electric	8M0095390
1	STARTER MOTOR ASSEMBLY	50-803835T01	50-803835A 1
2	PINION	803836
3	BRUSH SET (Positive)	803837
4	BRUSH SET (Negative)	8038371
5	HOLDER, Brush	803838
6	BOLT	10-161267
7	LOCKWASHER	13-17025
8	CABLE ASSEMBLY, Starter	84-8M0069818	84-853815 1
9	CAP	85-8538161
10	MAIN SWITCH	87-853820A1
11	PROTECTOR	853821
12	CLAMP	54-803563005	54-803563 1
13	FLYWHEEL (Wiring Gear)	262-8037001
14	BRACKET	803839
15	CAP	85-853816
16	WIRE ASSEMBLY, Fuse	84-853813A1
17	FUSE	88-853814
18	SOLENOID, Starter	89-853809T	89-853809
19	BOLT	10-162235
20	BOLT, (M6 x 14)	10-16223
21	TIE STRAP, (4.00 Inches)	56762
22	SWITCH, Neutral	87-8M0127937
23	SPACER	23-803842
24	SCREW	10-85554411
25	BRACKET	8037151
26	ACTUATOR	803841
27	GROUND WIRE	84-803820
28	RECTIFIER	8538116
29	SCREW, (25 mm)	10-16123
30	LOCKWASHER	13-16079
31	WIRE, Battery	84-853815

Electrical

Below is the parts list for Mercury 18 (2 CYL.) (International) Electrical:

Position No.	Part Name	OEM Number	Supersedes
1	FLYWHEEL	262-803700002	262-803700
2	NUT, Gold	11-851832001
3	WASHER	12-8537011
4	PLATE ASSEMBLY, Coil	803701A1
5	COIL, Exciter	803702T	803702
6	SCREW	10-95313
7	ALTERNATOR SET	803703
8	SCREW	10-82303113
9	GUIDE, Wire	853738
10	SCREW	10-8230314
11	CLAMP	54-803828
12	SCREW	10-8230315
13	CAM, Throttle Comment: (9.9)	803829
13	CAM, Throttle Comment: (15/18)	803829001
14	BOLT	10-82304226
15	SCREW	10-8555445
16	CLAMP	54-17169
17	TIE STRAP, (8.00 Inches)	54-816311T	54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
18	CAP	853741
19	PLUG	19-853994	19-853994001
20	HARNESS ASSEMBLY	84-17175
21	SWITCH ASSEMBLY, Stop - Lanyard	87-823037A2
22	LANYARD	823054
23	SCREW	10-85554410
24	CLAMP	54-803563005	54-803563 1
25	BOLT, (M6 x 12)	10-8230427
26	CD UNIT	8M0180176
27	WASHER, Stainless Steel	12-953921
28	BRACKET	803705
29	SCREW Comment: Design I	10-855544016
29	BOLT Comment: Design II	10-82304227
30	BOLT Comment: Design I	10-82304225
30	BOLT Comment: Design II	10-82304227
31	LOCKWASHER, (M6) Comment: Design I	13-400256
32	WASHER, Stainless Steel Comment: Design I	12-16826
33	GASKET Comment: Design I	27-851834
34	SPACER Comment: Design I	23-803707
35	COIL ASSEMBLY, Ignition	8M0121784
36	BOOT, With Resistance	85-855543
-	KIT, Ground wire/Head bolt/Washer Comment: SN# ON159950 & Up	8M0075401
37	GROUND WIRE Comment: SN# ON159950 & Up	84-853740

Fuel Tank(Plastic- 6.6 Gallon)

Below is the parts list for Mercury 18 (2 CYL.) (International) Fuel Tank(Plastic- 6.6 Gallon):

Position No.	Part Name	OEM Number	Supersedes
1	TANK ASSEMBLY, Fuel (Threaded Connection)	1259-859063A1
1	TANK ASSEMBLY, Fuel (Quick Connect)	1259-859063A2
2	CAP ASSEMBLY, Fuel-Manual Vent	36-816976Q1
3	GASKET, Fuel Cap	27-8169771
4	PICK UP ASSEMBLY, Fuel (Threaded Connection)	859059A2
5	PICK UP ASSEMBLY, Fuel (Quick Connect)	8M0084089	859066A 2
6	FLOAT	859056
7	SCREW, (M5 x 16)	10-40056107
8	WASHER	12-859080
9	GASKET	27-859072
10	FUEL LINE ASSEMBLY	32-8M0126969
11	BULB ASSEMBLY, Primer	13330Q07
12	CHECK VALVE ASSEMBLY	21-13331A3
13	CHECK VALVE ASSEMBLY	21-13331A4
14	CLAMP, Nylon	54-4158210
15	CLAMP	54-41582Q7
16	CONNECTOR, (.250-18)	22-89771Q2
17	CONNECTOR, Fuel	22-8M0120628
18	CLAMP	54-853798
19	CLAMP	54-41582Q7

Gear Housing, Driveshaft

Below is the parts list for Mercury 18 (2 CYL.) (International) Gear Housing, Driveshaft:

Position No.	Part Name	OEM Number	Supersedes
-	GEAR HOUSING ASSEMBLY Comment: Short	1668-8M0070903	1668-803729A 1 Short
-	GEAR HOUSING ASSEMBLY Comment: Long	1668-8M0070904	1668-803729A 2 Long
1	GEAR HOUSING ASSEMBLY, Basic	1668-803729A3
2	BEARING, Needle	31-160521
3	PLUG	22-8M0229353
4	GASKET	27-95220
5	ANODE	97-803731
5	TRIM TAB	853762T01
6	BOLT, (M6 x 16)	10-16832
7	STRAINER, Water	16133
8	SCREW	10-16134
9	STRAINER, Water	803730002	803730
10	SCREW	10-17635
11	NUT	11-85372216
12	PLUG	22-8M0229353
13	GASKET	27-95220
14	WASHER	12-8M0135942
15	NUT	11-879194337	11-853722023
16	GUIDE	803758
17	TUBE, Water Comment: Short	32-803755
17	TUBE, Water Comment: Long	32-8037551
18	SEAL	26-8036673
19	STOPPER	803756
20	GUARD PIPE	803754
21	GROMMET	25-8M0065492	25-803759
22	HOUSING, Water Pump, Upper	46-803750A05	46-803750
23	SEAL	26-8036674
24	BOLT	10-823042046	10-823042 5
25	LINER, Water Pump	803751
26	IMPELLER	47-8M0214944
27	GUIDE PLATE	803753
28	HOUSING, Water Pump, Lower	46-803750A04	46-803750 1
29	O-RING	25-8537096
30	SEAL, Oil	26-803752
31	SHIM, (0.1)	15-813276001
31	SHIM, (0.15)	15-813276015
31	SHIM, (0.3)	15-813276003
31	SHIM, (0.5)	15-813276005
32	BEARING, Ball	30-16132T05
33	DRIVESHAFT Comment: Short	45-803738
33	DRIVESHAFT Comment: Long	45-8037381
34	KEY	28-8M0173418
35	GEAR, Pinion	43-8M0183193
36	NUT	11-85372211
37	GASKET, Guide Plate Comment: SN# ON179314 & Up	27-8M0075040
-	REPAIR KIT, Gear Housing Water Pump	46-8M0070780	853792T04, 853792A 4
-	GASKET SET, Lower Unit	27-8M0082884	27-8M0075042, 27-803728A02, 27-803728A99

Gear Housing, Propeller Shaft

Below is the parts list for Mercury 18 (2 CYL.) (International) Gear Housing, Propeller Shaft:

Position No.	Part Name	OEM Number	Supersedes
-	GEAR HOUSING ASSEMBLY Comment: (Short)	1668-8M0070903	1668-803729A 1 (Short)
-	GEAR HOUSING ASSEMBLY Comment: (Long)	1668-8M0070904	1668-803729A 2 (Long)
-	GEAR HOUSING ASSEMBLY Comment: (Ultra long)	1668-8M0075064
1	GEAR HOUSING ASSEMBLY, Basic	1668-803729A3
37	BEARING, Ball	30-16132T01
38	GEAR, Forward	43-8M0183172
39	PUSH ROD	803747
40	HOLDER	853764003	853764
41	SPRING	24-803746
42	CLUTCH	52-803745
43	PIN	17-160851
44	SPRING	24-176672
45	PROPELLER SHAFT	44-8M0088568	44-879147T96, 44-803744T03, 44-803744003, 44-879147096, 44-803744
46	WASHER	12-803742
47	GEAR, Reverse	43-8M0183196
48	CARRIER ASSEMBLY, Bearing	8M0070877	803732T04, 803732A 1
49	O-RING	25-8M0087846	25-803735
50	BEARING, Ball	30-16132T01
51	BEARING, Needle	31-803734
52	SEAL, Oil	26-161622
53	BOLT	10-8M0075053
54	THRUST HOLDER	8M0143215
55	BLACK MAX PROPELLER, (6 Pitch)	48-879781A10	48-879781
55	BLACK MAX PROPELLER, (7 Pitch)	48-8M0075313	48-879779010
55	BLACK MAX PROPELLER, (8 Pitch)	48-897748A11	48-897748A10, 48-879780A10, 48-879780, 48-879780010
55	PROPELLER, (8.5 Pitch)	48-803832A10	48-803832
55	PROPELLER, (9 Pitch)	48-897750A11	48-897750A10, 48-853790A10, 48-803832 1
55	PROPELLER, (10 Pitch)	48-897752A11	48-815083A10, 48-803832002, 48-897752A10
-	RUBBER HUB	8M0075314	879782
56	WASHER	12-161402
57	PROP NUT	11-161471
58	COTTER PIN	18-8150264
-	GASKET SET, Lower Unit	27-8M0082884	27-8M0075042, 27-803728A02, 27-803728A99

Gear Shift

Below is the parts list for Mercury 18 (2 CYL.) (International) Gear Shift:

Position No.	Part Name	OEM Number
1	CAM	8M0172382
2	PIN	17-16179
3	BUSHING	23-803761
4	CLAMP	803762
5	SCREW	10-898103153
6	O-RING	25-8537096
7	O-RING	25-161772
8	CAM ROD Comment: (Short)	803760
8	CAM ROD Comment: (Long)	8037601
8	CAM ROD Comment: (Ultra Long)	803760019
9	SHIFT ROD JOINT	803767
10	PIN, Dowel	17-952189
11	GROMMET	25-8037591
12	LEVER, Shift	803763
13	STOPPER	24-8M0138738
14	BOLT, (M6 x 16)	10-16832
15	LOCKWASHER, (M6)	13-400256
16	BUSHING	23-163361
17	BOLT, (M6 x 16)	10-16832
18	WASHER, Stainless Steel	12-16826
19	PLATE, Stopper	803764
20	ADJUSTER, Shift Lever	803765
21	COTTER PIN	18-8150268
22	WAVE WASHER	13-8537234
23	PIN	17-160852
24	COTTER PIN	18-81502610
25	LEVER, Shift Rod	803768
26	COTTER PIN	18-8150268
27	SHIFT ROD Comment: (Short)	803766
27	SHIFT ROD Comment: (Long)	8037661
28	GROMMET	25-16823

Inlet Manifold

Below is the parts list for Mercury 18 (2 CYL.) (International) Inlet Manifold:

Position No.	Part Name	OEM Number	Supersedes
1	MANIFOLD ASSEMBLY, Inlet	803685A1
2	NIPPLE	22-8129601
3	SCREW	10-82303111
4	CLIP	54-95224
5	TUBING, (280 mm)	32-95223008
6	ROD	803681
7	END, Throttle Lever	803682
8	ARM, Throttle (With Roller)	879148022	803825
9	SCREW	10-8M0050972	10-803683
10	BOLT	10-16696
11	WASHER	12-809931044	12-809931042, 13-815064, 12-95222
12	GASKET	27-803663030	27-803663 3
13	REED PLATE ASSEMBLY	803686A1
14	GASKET	27-803663029	27-803663 4
15	STUD	16-8036841
16	STUD	16-803684
17	BOLT	10-161265
18	LOCKWASHER	13-16079
19	BOLT	10-8150631
20	NUT	11-162711
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)
-	POWERHEAD ASSEMBLY Comment: (15/18)	8M0046405	803679A10, 803679A 4 (15/18)
-	POWERHEAD ASSEMBLY Comment: (9.9)	8M0047750	803679A08, 803679A06 (9.9)

Recoil Starter

Below is the parts list for Mercury 18 (2 CYL.) (International) Recoil Starter:

Position No.	Part Name	OEM Number	Supersedes
-	STARTER ASSEMBLY, Recoil	8M0121783
1	HOUSING, Starter	8M0121770
2	PIN, Roll	17-952187
3	NUT, (M6) Stainless Steel	11-400212
4	LOCKWASHER	13-16818
5	WASHER	12-809931044	12-809931042, 13-815064, 12-95222
6	PLATE, Seal	8M0073654	803720
7	HANDLE, Starter Rope	8126401
8	O-RING	25-16109
9	RETAINER	853755
10	ROPE, Starter	50-161081
11	SPRING, Starter	24-8126451
12	REEL	803717
13	GUIDE	8037181
14	GUIDE	803718
15	SHAFT, Starter	803719
16	BOLT	10-16105
17	BUSHING	23-8537432
18	RATCHET	812635T01	812635 1
19	WASHER	12-161404
20	E RING	53-953181
21	SNAP, Link Rod	8M0169412
22	LOCK LINK, Starter	8036812
23	LINK ROD, Throttle Stop	8036813
24	STOPPER, Throttle	803722
25	SHAFT, Throttle Stop	8M0106723
26	WAVE WASHER	13-17641
27	SCREW	10-16123
28	NUT	11-16081
29	CAM	803721
30	COLLAR	23-855545
31	SCREW	10-855544
32	SCREW	10-8555449
33	SPRING	24-812645007	24-17638
34	COLLAR	23-895130	23-17637, 23-17637001
35	LOCK, Starter	17634
36	BOLT	10-16830
37	WASHER, Stainless Steel	12-16826
38	CLAMP	54-8M0130961
39	SEAL, Starter Comment: SN# 0N159950 & Up	8M0084268	8M0065066 SN# 0N159950 & Up
-	GASKET SET, Powerhead Comment: (15/18)	27-8M0141830
-	GASKET SET, Powerhead Comment: (9.9)	27-8M0065497	27-803663A30, 27-803663A01 (9.9)

Remote Control Attaching Kit

Below is the parts list for Mercury 18 (2 CYL.) (International) Remote Control Attaching Kit:

Position No.	Part Name	OEM Number
-	ATTACHING KIT, Remote Control	803874A1
1	PLATE, Steering Hook	8538022
2	BOLT	10-8230428
3	GROMMET	25-853803
4	WASHER	12-16192
5	NUT, (M8) Stainless Steel	11-400213
6	BRACKET	803877
7	SCREW	10-162233
8	CONNECTOR SHIFT KIT	853804
9	WASHER	12-17029
10	NUT, (M6) Stainless Steel	11-400212
11	BOLT	10-898103179
12	BRACKET	803875
13	LOCKWASHER	13-16079
14	NUT, Stainless Steel	11-16081
15	NUT, (M6) Stainless Steel	11-400212
16	LOCKWASHER, (M6)	13-400256
17	BALL JOINT	853801
18	BRACKET	17026
19	CAP	17027
20	SPRING	24-17028
21	CABLE ASSEMBLY (3.9M)	84-853799A1
21	CABLE ASSEMBLY (5.9M)	84-853799A2
22	GROMMET	25-162262

Remote Control-4000 Side Mount(Non Power Trim)

Below is the parts list for Mercury 18 (2 CYL.) (International) Remote Control-4000 Side Mount(Non Power Trim):

Position No.	Part Name	OEM Number	Supersedes
-	REMOTE CONTROL, Electric Start - Non Power Trim	8M0178532
1	NOT SOLD SEPARATE, Housing, Front	NSS
2	DECAL, (F-N-R)	37-170622
3	NOT SOLD SEPARATE, Decal, Throttle Friction	NSS
4	NOT SOLD SEPARATE, Decal, Run/Off	NSS
5	HARNESS ASSEMBLY	84-850731A2
6	TIE STRAP, (8.00 Inches)	54-816311T	54-816311, 54-90077, 54-826785, F1877, F717046-1, F717046, MAF03001, 833188E, 54-F9301, 54-816311100, 54-898101111, 54-898101275
7	PLUG	19-11023
8	HANDLE KIT	8M0205858
9	NOT SOLD SEPARATE, Hub, Handle	NSS
10	SCREW, (M8 x 30)	10-4007154
11	WASHER	12-8M0207778
12	SCREW, (M5 x 18)	10-40118107
13	SCREW, (M4 x 10)	10-4005685
14	BRACKET, Lock Bar Support	16921
15	SCREW, (M4 x 10)	10-87775510
16	LOCK BAR, Red	8M0207317
17	SPRING	24-16924
18	GRIP	8811411
19	PLUG	881146
20	CAP/DECAL ASSEMBLY	881137A1
21	SCREW, (M5 x 18)	10-40118107
22	LOCKWASHER, External	13-16923
23	HOLDER, Neutral Lock	16899T
24	COVER	16917
25	SCREW, (M6 x 110)	10-40116110T	10-40116110
26	KNOB, Throttle Friction	881145
27	WASHER	12-16896
28	RING, Retaining	53-13194
29	ARM ASSEMBLY, Brake	16895
30	BEARING, (1.750 Inside Diameter)	23-16875
31	WASHER	12-16874
32	PLUG, Male	13541
32	CAP, Female	13540
33	NUT, (M5) Stainless Steel	11-401385
34	CLIP ASSEMBLY	54-85899A1
35	NOT SOLD SEPARATE, Gear Shift Assembly	NSS
36	BEARING, (.750 Inside Diameter)	23-16868
37	WASHER	12-16870
38	ROLLER, Cam	16873
39	NOT SOLD SEPARATE, Drive Gear	NSS
40	NOT SOLD SEPARATE, Plate, Stud Assembly	NSS
41	SCREW, (M4 x 6)	10-4005683
42	CLIP	16886
43	SPRING	24-16888
44	ROLLER	16884
45	DRUM ASSEMBLY	16883
46	WAVE WASHER	13-16922
47	NOT SOLD SEPARATE, Cover, Bottom	NSS
48	NOT SOLD SEPARATE, Cover, Top	NSS
49	BEARING, (.810 Inside Diameter)	23-16887
50	SCREW, (M5 x 12)	10-40118106
51	LEVER ASSEMBLY, With Decal	16919A1
52	NOT SOLD SEPARATE, Decal, Lift for Fast Idle	NSS
53	WASHER, (.255 x .620 x .030) Stainless Steel	12-35280
54	NUT, (M6)	11-401196
55	SPACER	17063T
56	BUSHING	23-71942
57	SWITCH ASSEMBLY, Ignition	87-17009A5
58	NUT, Special - Black Nylon	11-879755	11-93543
59	COVER ASSEMBLY, Key	90468A1
60	SCREW, (M5 x 10)	10-40056105
61	ROLLER, Detent	16879
62	CLIP	16880
63	SPRING	24-16882
64	SCREW, (M3 x 16)	10-4005647
65	SWITCH ASSEMBLY	87-17277T
66	SWITCH ASSEMBLY	87-91941A8
67	LANYARD ASSEMBLY	15920Q54
68	SPACER KIT, Rigging	850753A1
69	SCREW, (M6 x 20)	10-4008820
70	INDICATOR, Shift Load Tool	91-892542A01

Reverse Lock

Below is the parts list for Mercury 18 (2 CYL.) (International) Reverse Lock:

Position No.	Part Name	OEM Number	Supersedes
1	STOP, Tilt	898103103	803780
2	BOLT	10-168307
3	LOCKWASHER, (M6)	13-400256
4	SET PLATE	8M0157137
5	BUSHING	23-163364
6	STOP	853774
7	SPRING	24-953832
8	PIN, Spring	17-170331
9	ROD, Reverse Lock	17-8037841
10	COTTER PIN	18-8150261
11	ARM, Reverse Lock	803783001	803783
12	LOCK, Reverse	803782
13	SPRING	24-8037461
14	SPRING	24-803788
15	LINK, Reverse Lock	803787
16	SHAFT, Reverse Lock	17-803784002	17-803784
17	E RING	53-160572
18	LEVER, Reverse Lock Comment: SN# ON148084 & Below	803789
19	WASHER	12-953921
20	BOLT Comment: SN# ON148084 & Below	10-803790
21	WAVE WASHER Comment: SN# ON148084 & Below	13-17641
22	GRIP	8M0183798
23	BUTTON	8M0051399	853776
24	WASHER Comment: SN# ON148085 & Up	12-953925
25	LEVER, Reverse Lock Comment: SN# ON148085 & Up	8M0073129
26	BUSHING Comment: SN# ON148085 & Up	23-898103107
27	WASHER Comment: SN# ON148085 & Up	12-16192
28	BOLT, Shoulder Comment: SN# ON148085 & Up	10-803790001	804049 SN# ON148085 & Up

Service/Support Material

Below is the parts list for Mercury 18 (2 CYL.) (International) Service/Support Material:

Position No.	Part Name	OEM Number	Supersedes
-	PARTS MANUAL, 9.9/15/18 HP (2 Cylinder)(International)	90-803827006
-	OPERATION MANUAL	90-8M0093589	90-8M0085479, 90-10263081
-	DECAL SET Comment: (Mercury 9.9)	37-897507A01
-	DECAL SET Comment: (SeaPro 18)	37-888737A02
-	DECAL SET Comment: (Mercury 15)	37-897507A02
-	DECAL SET Comment: (Mariner 15)	37-857116A03	37-857116A01, 37-857116A99 (Mariner 15)

Swivel Bracket

Below is the parts list for Mercury 18 (2 CYL.) (International) Swivel Bracket:

Position No.	Part Name	OEM Number	Supersedes
1	SHAFT, Steering	8M0149919
2	BOLT	10-803777
3	WASHER, Stainless Steel	12-879194340	12-895141
4	WASHER	12-8M0056392	12-853822003, 12-853822 1
5	MOUNT, Rubber (Upper)	8M0153613
6	DAMPER RUBBER	803778
7	THRUST PLATE	803774
8	BUSHING	23-163363
9	O-RING	25-161091
10	SWIVEL BRACKET Comment: SN# 0N148084 & Below	3407-803772
10	SWIVEL BRACKET Comment: SN# 0N148085 & Up	1400-8M0073132
11	FITTING, Grease	22-824969
12	CABLE ASSEMBLY, Ground	84-898101091	84-878357
13	BUSHING	23-8537435
14	FRICTION PLATE	162052
15	SPRING	24-953831
16	BOLT	10-879194254	10-823042045

Throttle Linkage/Steering Handle

Below is the parts list for Mercury 18 (2 CYL.) (International) Throttle Linkage/Steering Handle:

Position No.	Part Name	OEM Number	Supersedes
-	HANDLE ASSEMBLY	8M0059950	16075A 3
-	HANDLE ASSEMBLY Comment: Design I	8M0133194
-	HANDLE ASSEMBLY, With Friction Control, Includes number 40/41/42/43 Comment: Design II	8M0133194
1	GRIP	160861
2	SCREW	10-8150461
3	HANDLE, Steering Comment: Design I	8M0055716	16075T02 Design I
3	HANDLE, Steering, With friction Control Comment: Design II	8M0055716	16075T02 Design II
4	DECAL	37-8M0097201
5	BOLT	10-8M0050498	10-8M0047526, 10-823042 2
6	NUT, Nylon	11-8537227
7	BOLT	10-8M0111108	10-8M0102998
8	COTTER PIN	18-8150263
9	SPACER	23-8537152
10	SPACER	23-16191
11	BUSHING	23-16336
12	LINK ROD	803710001	803710
13	COTTER PIN	18-8150262
14	WASHER	12-953925
15	ROD JOINT	8537451
16	PIN	853749001	853749
17	NUT	11-400212
18	SHAFT, Throttle	803712
19	BOLT	10-82304227
20	BRACKET	803715
21	E RING	53-160572
22	GROMMET	25-16823
23	COLLAR	23-952869
24	GEAR, Pinion	43-8M0182337
25	GROMMET Comment: (Remote Control)	25-16226
26	WAVE WASHER	13-8537232
27	SHAFT, Throttle	160931
28	ARM, Advancer	803709
29	SNAP, Link Rod	853748
30	LINK ROD ADVANCER	803681006	803681 1
31	NUT	11-16081
32	SCREW	10-16123
33	SCREW	10-16123
34	BALL JOINT	853744001	853744
35	CAP	853745
36	BUSHING	23-853743
37	STUD	16-879194297	16-853718 1, 16-811654002
38	WASHER	12-8M0135942
39	NUT, (M8)	11-95374
40	NUT, Component of 8M0055714 Comment: Design II	8M0051383	11-892776 Design II
41	SPRING, Stainless Steel, Component of 8M0055714 Comment: Design II	24-8M0051384	24-892777 Design II
42	CLAMP, Friction - Throttle, Component of 8M0055714 Comment: Design II	8M0051382	813026001 Design II
43	BOLT, Component of 8M0055714 Comment: Design II	10-8M0204707

Tools

Below is the parts list for Mercury 18 (2 CYL.) (International) Tools:

Position No.	Part Name	OEM Number	Supersedes
1	HOLDER/PULLER TOOL, Flywheel	91-8M0059838	91-804552001
2	INSTALLER/REMOVER TOOL, Piston Pin	91-804764
3	SOCKET	91-8M0045588
4	WRENCH TOOL	91-85399612
5	PULLER KIT, Needle Roller Bearing	91-895195A01	91-853996 20
6	FLANGE	91-8031332
7	SHAFT	91-8031333
8	WASHER	12-1614010
9	NUT	11-85372220
10	FLANGE	91-8031336
11	TOOL	91-8539966
12	TOOL	91-8539968
13	SNAP TOOL, Clutch Pin	91-804763
-	TOOL, Backlash Measuring Collar Comment: (Not Shown)	91-895216003
-	TOOL, Flywheel Puller Comment: (Not Shown)	91-8M0059838	91-804552001 (Not Shown)
-	TOOL, Flywheel Stripper Comment: (Not Shown)	91-8M0059838	91-804552001 (Not Shown)
-	TOOL KIT, In-Cowl	91-802618

Ultra Long Extension Components

Below is the parts list for Mercury 18 (2 CYL.) (International) Ultra Long Extension Components:

Position No.	Part Name	OEM Number	Supersedes
1	HOUSING, Extension	853783T08
2	STUD	16-879194301	16-853718004, 16-879194299, 16-811653 2
3	WASHER	12-8M0135942
4	NUT	11-400213
5	DRIVESHAFT	45-803738021
6	CAM ROD	803760019
7	WATER TUBE	32-803755015

Download this page as PDF: Click here

For Mercury Owners:

To assist you in maintaining and repairing your marine engines, we hope the following resources may be of use:

Mercury / Mercruiser / Mariner Parts from JLM Marine

About JLM Marine

Founded in 2002, JLM Marine has established itself as a dedicated manufacturer of high-quality marine parts, based in China. Our commitment to excellence in manufacturing has earned us the trust of top marine brands globally.

As a direct supplier, we bypass intermediaries, which allows us to offer competitive prices without compromising on quality. This approach not only supports cost-efficiency but also ensures that our customers receive the best value directly from the source.

We are excited to expand our reach through retail channels, bringing our expertise and commitment to quality directly to boat owners and enthusiasts worldwide.