Mercury 1000BP (2399698 THRU 2641854) Parts & Diagrams

OEM and aftermarket replacement parts for Mercury 1000BP. Scroll down for exploded parts diagrams (5), specifications, and maintenance reference.

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Gearcase Drain Plug – Fits Mercury/MerCruiser Marine Engines (Replaces 10 - 79953Q04, 79953Q04) - JLM Marine Boat Parts Limited
Немагнитная масляная пробка нижнего блока для подвесного двигателя Mercury Mariner и кормового привода MerCruiser 79953Q04
$21.50
$21.50
files/Lower_Unit_Non-Magnetic_Oil_Plug_for_Mercury_Mariner_Outboard_and_MerCruiser_Sterndrive_______79953Q04_-_JLM_MARINE-8287053.jpgDefault Title
$21.50
Water Pump Impeller Repair Kit – Fits Mercury/Mariner 65–225 HP (Replaces 47 - 89984T5) - JLM Marine Boat Parts Limited
Комплект крыльчатки водяного насоса для Mercury 65–225 л.с. 47-89984T5
$38.50
$38.50
files/Water_Pump_Impeller_Kit_for_Mercury_65_to_225_hp_47-89984T5_-_JLM_MARINE-8289819.jpgDefault Title
$38.50
Water Pump Impeller – Fits Mercury/Mercruiser/OMC/Johnson/Evinrude 65 - 225 HP (Replaces 47 - 89984T4) - JLM Marine Boat Parts Limited
Комплект крыльчатки водяного насоса для Mercury / Mercruiser / OMC / Johnson / Evinrude Набор для обслуживания крыльчатки 65 - 225 л.с. 47-89984T4
$21.50
$21.50
files/Water_Pump_Impeller_Kit_for_Mercury_-__Mercruiser_-_OMC_-_Johnson_-_Evinrude_Impeller_Service_Set_65_to_225_hp_47-89984T4_-_JLM_MARINE-8289798.jpgDefault Title
$21.50
Water Pump Impeller Kit – Fits Mercury/Mercruiser 65–225 HP (Replaces 47 - 89984T5) - JLM Marine Boat Parts Limited
Комплект крыльчатки водяного насоса для Mercury 65 до 225 л.с. 46-96148A5
$38.50
$38.50
files/Water_Pump_Impeller_Kit_for_Mercury_65_up_to_225_hp_46-96148A5_-_JLM_MARINE-8289811.jpgDefault Title
$38.50
47-803631T Water Pump Impeller for Mercury Mercruiser Force | JLM Marine
47-803631T Water Pump Impeller for Mercury Mercruiser Force | JLM Marine
$17.99
$17.99
files/2fef3a828babec6d.jpgDefault Title
$17.99

Mercury 1000BP (2399698 THRU 2641854) Parts & Diagrams

🔎 Mercury 1000BP Reference Library — Exploded parts diagrams (5 diagrams), specifications, common issues, and maintenance checklist.

The Mercury 1000BP is a 4-Stroke, Inline 4-Cylinder, EFI, SOHC outboard motor. Powers center-console boats, larger pontoons, and offshore-capable fishing craft.

Quick Reference Specifications

Specification Value
Engine Type 4-Stroke, Inline 4-Cylinder, EFI, SOHC
Horsepower 100 HP
Displacement 2064 cc
Bore x Stroke 90 mm x 81 mm
Spark Plug (Type & Gap) NGK IZFR6F-11
Engine Oil Capacity 5.2 L (5.5 quart)
Recommended Engine Oil Mercury FourStroke Oil 10W-30
Gear Case Oil Capacity 710 mL (24 fl oz)
Idle Speed (in gear) 650–700 RPM (in gear)
Full Throttle RPM Range 5000-6000
Fuel Unleaded Gasoline, 87 Octane min.

Always verify specifications against your owner's manual for your specific serial number range.

Common Issues & Recommended Parts

Below are common maintenance scenarios for the Mercury 1000BP:

  • Water Pump / Overheating: If the tell-tale stream is weak or absent, the water pump impeller likely needs replacement. Inspect annually or every 100 hours. → Recommended: Water Pump Impeller Kit
  • Engine Oil / Maintenance Light: 4-stroke engines require regular oil and filter changes. Use marine-grade oil rated for your engine. Change every 100 hours or annually. → Recommended: Oil Filter, Engine Oil
  • Fuel Injector Issues (EFI models): Rough idle or misfires may indicate clogged fuel injectors. Use fuel stabilizer and clean injectors periodically. → Recommended: Fuel Injector, Fuel Filter
  • Gear Case Oil Leak: Check lower unit seals if gear oil appears milky (water contamination). Replace seals and gaskets during lower unit service. → Recommended: Lower Unit Seal Kit, Drain Plug Gaskets
  • Anode Corrosion: Inspect sacrificial anodes regularly, especially in saltwater. Replace when 50% depleted to protect against galvanic corrosion. → Recommended: Zinc/Aluminum Anode Kit

Parts Diagrams & OEM Part Numbers

Expand the sections below to view detailed exploded parts diagrams and find the exact OEM replacement components for your Mercury 1000BP.

▶CLAMP AND SWIVEL BRACKET ASSEMBLY (54 parts) CLAMP AND SWIVEL BRACKET ASSEMBLY
Ref OEM Part # Part Name
1 1440-3296A1 CLAMP BRACKET ASSEMBLY
2 28403A3 THUMB SCREW ASSEMBLY
3 12-28404 WASHER, THUMB SCREW
4 38-56267 SERIAL PLATE
5 10-25612 SCREW, SERIAL PLATE TO SWIVEL BRACKET
6 17-48883A1 SWIVEL PIN AND STEERING ARM ASSEMBLY
7 26-52924 SEAL, RUBBER - SWIVEL PIN
8 10-49373 BOLT, STEERING ARM TO UPPER MOUNT
9 11-8M0204653 NUT, STEERING ARM BOLT
10 1453-4673A1 SWIVEL BRACKET ASSEMBLY
11 26-37448 OIL SEAL, SWIVEL BRACKET
12 10-47828 SCREW, DRIVE - SWIVEL BRACKET
13 22-69059 FITTING, GREASE - SWIVEL BRACKET
14 19-77633Q LUBRICAP, SWIVEL BRACKET GREASE FITTING
15 8M0041936 TUBE, TILT - CLAMP BRACKET TO SWIVEL BRACKET
16 12-52864 SHIM ASSEMBLY, CLAMP BRACKET TILT TUBE
17 11-858869 NUT, TILT TUBE FASTENTING
18 53078 CAP, PLASTIC - TILT TUBE
19 23-59624 SPACER, CLAMP BRACKET STUD
20 16-59625 STUD, CLAMP BRACKET
21 12-24812 WASHER, CLAMP BRACKET STUD
22 11-862902 NUT, CLAMP BRACKET STUD
23 10-49369 SCREW, TILT LOCK PIN (9-3/8")
24 12-37828 WASHER, TILT LOCK PIN SCREW
25 11-82671013 NUT, TILT LOCK PIN SCREW
26 10-68298 BOLT, CLAMP BRACKET TO BOAT TRANSOM
27 12-68410 WASHER, CLAMP BRACKET BOLT
28 11-82670912 NUT, CLAMP BRACKET BOLT
29 30126A1 TILT STOP LEVER ASSEMBLY
30 10-30128 SCREW, TILT STOP LEVER TO CLAMP BRACKET
31 13-31030 WASHER, WAVE - TILT STOP LEVER SCREW
32 11-29250 NUT, TILT STOP LEVER SCREW
33 55-49577 PIN, LOWER EYE BOLT MOUNTING
34 12-37429 WASHER, SWIVEL PIN
35 12-48926 WASHER, SWIVEL PIN
36 48884 YOKE, BOTTOM
37 11-37424 NUT, SWIVEL PIN RETAINING
38 10-48924 SCREW, YOKE TO DRIVE SHAFT HOUSING - LOWER (3-1/2")
39 12-24501 WASHER, YOKE SCREW
40 11-35000 NUT, YOKE SCREW
41 49982A1 EYE BOLT ASSEMBLY
42 10-28450 SCREW, NYLOK - LOWER EYE BOLT MOUNTING PIN
43 12-8M0204648 WASHER, LOWER BUSHING RETAINER
44 23-28198 BUSHING, RUBBER - EYE BOLT
45 11-20739 NUT, EYE BOLT
46 12-52601 WASHER, PLAIN - EYE BOLT
47 27-49985 GASKET, EYE BOLT (3/16" NEOPRENE)
48 12-49983 WASHER, CUPPED - EYE BOLT
49 27-49984 GASKET, EYE BOLT (1/2" NEOPRENE)
50 11-8M2014641 NUT, EYE BOLT
51 52131 ROD, STEERING
52 23-52169 SLEEVE, STEERING ROD
53 12-20086 WASHER, STEERING ROD
54 11-8M0204726 NUT, STEERING ROD
▶DRIVE SHAFT HOUSING ASSEMBLY (20 parts) DRIVE SHAFT HOUSING ASSEMBLY
Ref OEM Part # Part Name
1 1568-3388A1 DRIVE SHAFT HOUSING ASSEMBLY
2 16-46911 STUD, DRIVE SHAFT HOUSING TO SPACER (3-3/16")
3 16-27879 STUD, DRIVE SHAFT HOUSING TO SPACER (3-1/16")
4 11-8M0204653 NUT, DRIVE SHAFT HOUSING STUD (7/16" STUD)
5 11-23161 NUT, DRIVE SHAFT HOUSING STUD (3/8" STUD)
6 52107 PLATE, HEAT SHIELD
7 48921A1 SHIFT DETENT ASSEMBLY
8 10-21091 SCREW, SHIFT DETENT TO DRIVE SHAFT HOUSING (1-1/8")
9 11-8267089 NUT, SHIFT DETENT SCREW
10 12-20086 WASHER, POWERHEAD STUDS
11 11-23161 NUT, POWERHEAD STUDS (3/8-24)
12 11-82670911 NUT, POWERHEAD STUDS (5/16-24)
13 32-48905 TUBE, WATER INLET
14 37417 COVER, TRIM - DRIVE SHAFT HOUSING
15 10-37571 SCREW, TRIM COVER TO BOTTOM COWL (1/2")
16 37919 SEAL, TRIM COVER TO DRIVE SHAFT HOUSING
17 37665 STRIP, RETAINING - TRIM COVER SEAL (SIDE)
18 10-48409 SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (5/8")
19 38052 STRIP, RETAINING - TRIM COVER SEAL (REAR)
20 10-48408 SCREW, RETAINING STRIP TO DRIVE SHAFT HOUSING (1/2")
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1) (62 parts) GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 1)
Ref OEM Part # Part Name
- 1638-3389A5 GEAR HOUSING ASSEMBLY, COMPLETE Comment: (LEFT HAND ROTATION - MERC 1250BP - SEE NOTE BELOW
1 45-56345 COUPLING ASSEMBLY, DRIVE SHAFT
2 53281A3 SPACER ASSEMBLY, COMPLETE
3 32-23365 STUD, SPACER TO FACE PLATE (1-1/8")
4 26-24590 OIL SEAL, SHIFT SHAFT - SPACER (1-9/16" O.D.)
5 26-892361 OIL SEAL, SHIFT SHAFT - SPACER (1-3/4" O.D.)
6 12-31266 WASHER, RUBBER - SHIFT SHAFT
7 17-35973 PIN, DOWEL - SPACER TO WATER PUMP
8 16-30717 STUD, SPACER TO WATER PUMP (2-7/16")
9 26-89238 OIL SEAL, SPACER - LOWER
10 26-16977 OIL SEAL, SPACER - UPPER
11 22-390721 PLUG, PIPE - SPACER
12 16-8M0133358 STUD, SPACER TO GEAR HOUSING (2-1/16")
13 15-26320A1 SHIM ASSEMBLY, DRIVEN GEAR BEARING TO SPACER Comment: NOT USED ON LATER ENGINES
14 48907 CAM, SHIFT Comment: NOT USED ON LATER ENGINES
15 15-48920A1 SHIM ASSEMBLY, SHIFT CAM Comment: NOT USED ON LATER ENGINES
16 23-56358 SPACER, DRIVEN GEAR Comment: PART OF A-53281A3 SPACER ASSEMBLY
18 15-26320A1 SHIM ASSEMBLY, DRIVEN GEAR Comment: PART OF A-53281A3 SPACER ASSEMBLY
19 53276 CAM, SHIFT Comment: PART OF A-53281A3 SPACER ASSEMBLY
20 15-53278A1 SHIM ASSMEBLY, SHIFT CAM Comment: PART OF A-53281A3 SPACER ASSEMBLY
21 24-53277 SPRING, SHIFT CAM Comment: PART OF A-53281A3 SPACER ASSEMBLY
22 48909 COVER, SHIFT PIVOT Comment: PART OF A-53281A3 SPACER ASSEMBLY
23 10-34298 SCREW, SHIFT FORK
24 11-826709109 NUT, SHIFT FORK SCREW
25 10-53099 SCREW, PIVOT COVER TO GEAR HOUSING
26 13-26992 LOCKWASHER, SHIFT PIVOT COVER SCREW
27 48908 SHIFT FORK, SLIDING CLUTCH
28 48922 COLLAR, SHIFT - RATCHET
29 52-48906 RATCHET, SLIDING CLUTCH
30 43-48895A1 GEAR ASSEMBLY, DRIVE (2:1 GEAR RATIO)
31 31-21700 ROLLER BEARING, DRIVE GEAR
32 30-48916 BALL BEARING, DRIVE GEAR
33 15-34810A1 SHIM ASSEMBLY, DRIVE GEAR BEARING TO SPACER
34 48919 RETAINER, DRIVE SHAFT BEARING
35 10-28667 SCREW, RETAINER TO SPACER (1-1/8")
36 13-21272 LOCKWASHER, RETAINER SCREW
37 52172 MAGNET, RETAINER SCREW
38 23-48927 SPACER, DRIVEN GEAR
39 31-48941A1 ROLLER BEARING ASSEMBLY, TAPERED - DRIVEN GEAR
40 31-48913 BEARING, THRUST - DRIVE SHAFT
41 45-48877 DRIVE SHAFT, INPUT
42 12-48912 WASHER, THRUST - DRIVE SHAFT
43 15-53325A1 SHIM ASSEMBLY, DRIVE GEAR BEARIING TO SPACER
44 41010 "O" RING, ADAPTOR FLANGE
45 25-336 "O" RING, WATER INLET TUBE
46 12-32618 WASHER, GEAR HOUSING STUDS
47 11-8M0204653 NUT, GEAR HOUSING STUDS
48 25-23554 "O" RING, DRIVE SHAFT HOUSING STUDS
49 25-38594 "O" RING, DRIVE SHAFT HOUSING STUDS
50 27-48892 GASKET, SPACER TO FACE PLATE
51 48893 PLATE, FACE - SPACER TO WATER PUMP
52 47-89984T4 IMPELLER, WATER PUMP
53 17-8M0214994 PIN, IMPELLER DRIVING
54 27-48923 GASKET, FACE PLATE TO WATER PUMP
55 46-48881A1 WATER PUMP ASSEMBLY
56 30915 INSERT, WATER PUMP
57 26-16977 OIL SEAL, WATER PUMP
58 26-38970 SEAL, WATER PUMP INLET
59 23-29804T SLEEVE, WATER TUBE GUIDE
60 1334-2031 NUT, WATER PUMP AND FACE PLATE STUDS
61 25-8M0214918 SLINGER, WATER PUMP - DRIVE SHAFT
62 25-8M0214919 "O" RING, DRIVE SHAFT - UPPER
▶GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2) (65 parts) GEAR HOUSING ASSEMBLY, COMPLETE (PAGE 2)
Ref OEM Part # Part Name
-- 1638-3389A5 GEAR HOUSING ASSEMBLY, COMPLETE Comment: LEFT HAND ROTATION - MERC 1250BP - SEE NOTE BELOW
63 1638-3389A1 GEAR HOUSING ASSEMBLY
64 22-8M0180564 PLUG, PIPE (1/4-18 THREAD)
65 22-390721 PLUG, PIPE (1/8-27 THREAD)
66 16-32129 STUD, GEAR HOUSING TO SPACER (2-3/8")
67 16-49082 STUD, GEAR HOUSING TO SPACER (3-3/4")
68 31-48937 ROLLER BEARING, DRIVE SHAFT
69 22-49523 ELBOW, OIL TUBE (45 DEGREES)
70 10-79953Q04 SCREW, VENT AND FILLING
71 12-191833 WASHER, SEALING - VENT AND FILLING SCREW
72 31-30956T ROLLER BEARING, PROPELLER SHAFT
73 26-55285 OIL SEAL, PROPELLER SHAFT
74 12-39701 WASHER, SPLINED - PROPELLER NUT
75 12-39698 WASHER, PLAIN - PROPELLER NUT
76 11-859126 NUT, PROPELLER
77 44-48882 PROPELLER SHAFT
78 12-48936 WASHER, PROPELLER SHAFT
79 15-20929A1 SHIM ASSEMBLY, PROPELLER SHAFT
80 31-38146A1 ROLLER BEARING ASSEMBLY, TAPERED - REAR
82 23-48935 SPACER, PROPELLER SHAFT - LONG Comment: RIGHT HAND ROTATION
84 23-48934 SPACER, PROPELLER SHAFT - SHORT Comment: RIGHT HAND ROTATION
85 12-49808 WASHER, PROPELLER SHAFT Comment: LEFT HAND ROTATION
86 23-49809 SPACER, PROPELLER SHAFT - SHORT Comment: LEFT HAND ROTATION
88 23-48935 SPACER, PROPELLER SHAFT - LONG Comment: LEFT HAND ROTATION
89 43-48949 GEAR, PROPELLER SHAFT Comment: LEFT HAND ROTATION
90 31-38135A1 ROLLER BEARING ASSEMBLY, TAPERED - PROPELLER SHAFT
91 12-48933 WASHER, PROPELLER SHAFT
92 24-59174 NUT, PROPELLER SHAFT
93 23-48932 SPACER, BEARING RETAINER TO GEAR HOUSING
94 11-48931 NUT, BEARING RETAINER
95 48942 ANCHOR STUD, BEARING RETAINER
96 25-8M0204651 "O" RING, ANCHOR STUD
97 12-48930 WASHER, ANCHOR STUD
98 53-48928 RING, SNAP - ANCHOR STUD TO GEAR HOUSING
99 48929 COVER, GEAR HOUSING
100 17-30282 PIN, NOSE CONE LOCATING
101 48904 CONE, NOSE - GEAR HOUSING
102 10-39703 SCREW, NOSE CONE TO GEAR HOUSING
103 12-32648 WASHER, GEAR HOUSING STUDS
104 11-8M0204653 NUT, GEAR HOUSING STUDS
105 25-45719 "O" RING, GEAR HOUSING STUDS
106 25-8M0204645 "O" RING, SHIFT COVER
107 49526A1 PLATE ASSEMBLY, COVER
108 22-49521 ELBOW, PLATE TO OIL TUBE (90 DEGREES)
109 32-52170 TUBE, OIL - GEAR HOUSING TO COVER PLATE
110 10-49527 SCREW, COVER PLATE TO GEAR HOUSING (1")
111 13-21272 LOCKWASHER, COVER PLATE SCREW
112 12-39143 WASHER, COVER PLATE SCREW
114 11-49253 NUT, LOCK - PINION GEAR TO DRIVE SHAFT*
115 45-48880 DRIVE SHAFT, REAR
116 15-8M0063268 SHIM ASSEMBLY, REAR DRIVE SHAFT
117 31-48939A1 ROLLER BEARING ASSEMBLY, TAPERED - REAR DRIVE SHAFT
118 43-48887A1 GEAR ASSEMBLY, DRIVE SHAFTS
119 45-48879 DRIVE SHAFT, CENTER
120 15-24542A1 SHIM ASSEMBLY, CENTER DRIVE SHAFT
121 30-53280 BALL BEARING, CENTER DRIVE SHAFT
123 12-35981 WASHER, CENTER DRIVE SHAFT
124 11-8M0214915 NUT, GEAR TO CENTER DRIVE SHAFT
125 45-48878 DRIVE SHAFT, FRONT
126 15-20929A1 SHIM ASSEMBLY, FRONT DRIVE SHAFT
127 30-53279 BALL BEARING, FRONT DRIVE SHAFT
129 11-30932 NUT, GEAR TO FRONT DRIVE SHAFT
130 48891 RETAINER, BEARING
131 10-53099 SCREW, BEARING RETAINER TO GEAR HOUSE (3/4")
132 13-26992 LOCKWASHER, BEARING RETAINER SCREW
▶MISCELLANEOUS PARTS/ACCESSORIES (1 parts) MISCELLANEOUS PARTS/ACCESSORIES
Ref OEM Part # Part Name
- 49248A1 REVERSE THROTTLE LIMIT KIT

100-Hour / Annual Service Checklist

Regular maintenance keeps your Mercury 1000BP running reliably season after season. Most of these tasks can be performed with basic tools and the factory service manual.

  1. Replace water pump impeller and inspect wear plate
  2. Change engine oil and oil filter (check drain plug washer)
  3. Replace spark plugs and check ignition timing
  4. Drain and refill lower unit gear oil; inspect for water contamination
  5. Inspect fuel lines, primer bulb, and fuel filter for deterioration
  6. Check and replace sacrificial anodes (zinc or aluminum)
  7. Inspect propeller for damage; check shaft seal and cotter pin
  8. Check valve clearance (refer to service manual for specifications)
  9. Lubricate all grease points (steering, tilt tube, shift linkage)
  10. Inspect control cables and throttle/shift linkage for smooth operation
  • Pro Tip: Always flush the engine with fresh water after saltwater use — even a quick 10-minute flush significantly extends component life.
  • Pro Tip: Use fuel stabilizer in the tank before winter storage, and fog the cylinders to prevent internal corrosion during extended periods of non-use.

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