How to Match This Part
This aftermarket temperature sensor assembly replaces Mercury / Mariner / MerCruiser / Quicksilver 885342002 (covers earlier 885342001 and current superseding number 8M0148668). It is a threaded probe-style sensor used on listed Mercury and Mariner EFI, DFI, and Verado outboards, plus listed MerCruiser sterndrive and inboard applications.
Match this part in this order:
1. Number on the sensor you remove — 885342002, 885342001, or 8M0148668
2. Engine family — EFI / DFI / Verado outboard groups or listed MerCruiser MPI / MAG / inboard applications in the compatibility table
3. Serial number on the engine ID plate against the serial notes, then compare the threaded brass probe, hex body, sleeved pigtail, and two-pin blue-lock connector with the product images
Mercury lists 8M0148668 as the current functional replacement for 885342002; the replacement may look slightly different while remaining the correct supersession. Do not order by horsepower alone when a serial-number range is listed.
Part Number Cross-Reference
Use these verified Mercury numbers to confirm you have the correct temperature sensor. Brand names and OEM numbers are for identification only.
| Type |
Brand |
Part Number |
Notes |
| OEM |
Mercury / Mariner / MerCruiser / Quicksilver |
885342002 |
Primary listing number; SENSOR ASSY-TEMP |
| OEM |
Mercury / Mariner / MerCruiser / Quicksilver |
885342001 |
Earlier number in the same supersession chain |
| OEM |
Mercury / Mariner / MerCruiser / Quicksilver |
8M0148668 |
Current superseding functional replacement |
This is an aftermarket part manufactured by JLM Marine. It is not sold as a genuine Mercury Marine, Mariner, MerCruiser, or Quicksilver component.
Compatible Engine Models
Confirm your engine model and serial number before ordering. For Mercury / Mariner outboards, use the Mercury Serial Number Guide and Mercury Parts Diagrams. For MerCruiser, use the engine identification plate on the engine — not an outboard transom-bracket location.
| Brand |
Engine Family |
Rated HP / Models |
Serial / Notes |
| Mercury / Mariner |
EFI FourStroke 4-cylinder |
40, 50, 60 EFI |
OEM where-used includes 0P401000 / 0P515897 and 1C000001 / 1C050252 family blocks — confirm serial on the temperature-sensor diagram |
| Mercury / Mariner |
EFI FourStroke |
75, 80, 90, 100, 115 EFI |
Covered blocks include 0P459572 / 1B366823 through 2B094995 — confirm serial |
| Mercury / Mariner |
DFI OptiMax 1.5L |
75, 90, 115 DFI; 80 Jet; 115 Pro XS; 125 DFI |
1B417702 / 1B586067 / 1B736885 / 1B751825 families — confirm serial |
| Mercury / Mariner |
DFI / EFI 2.5L & Racing XS |
V-135/150/175 DFI; V-150/200 EFI; selected XS / Sport XS |
1B227000 / 1B417702 / 1E00xxxxx Racing blocks — confirm on diagram |
| Mercury |
150 FourStroke |
150 |
1B905505 & Up |
| Mercury / Mariner |
Verado 4-cylinder 4-stroke |
135, 150, 175, 200 |
0P464488 / 0P514869 and 1B381712 / 1B517159 family ranges — confirm serial |
| Mercury / Mariner |
Verado / Pro Verado 6-cylinder 4-stroke |
200, 225, 250, 275, 300; Pro 200/250/300; 350 / 400 |
0P520553 / 1B517434 / 2B034840 / 2B141124 / 2B144123 family ranges — confirm serial |
| Mercury / Mariner |
3.0L DFI / EFI & Jet Drive |
200 / 225 / 250 DFI–EFI; Pro XS; 200 DFI Jet |
1B417702 / 1B504989 / 1B912786 and Jet 0E / 0M / 1B powerhead–pump blocks — confirm serial |
| MerCruiser |
MPI / MAG / Inboard / Scorpion |
3.0L–8.2L MPI; 350/377/496 MAG; 8.1L; 525 EFI; selected Racing SCi |
Dealer where-used lists serial blocks such as 0W650000 / 0W690000 / 1A0xxxxx / 2A0xxxxx families — match the OEM number on the sensor you remove |
Always match the number stamped on the sensor you remove. Engines outside these groups use different temperature-sensor part numbers.
Technical Specifications
| Specification |
Value |
| Part type |
Temperature sensor assembly (SENSOR ASSY-TEMP) |
| Primary OEM number replaced |
885342002 |
| Related / current OEM numbers |
885342001 (earlier); 8M0148668 (current supersession) |
| Mounting form |
Threaded probe with hex drive body |
| Lead / connector |
Black sleeved pigtail to two-pin connector with blue locking tabs |
| Visible body |
Brass-tone metal probe and hex section |
| Condition |
Brand new aftermarket (not remanufactured) |
Installation Guide
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1Confirm the stamped number on the sensor you remove is 885342002, 885342001, or 8M0148668, and that your engine/serial appears in the compatibility table.
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2Disconnect the battery negative cable and allow the engine to cool before opening the cowling or engine compartment.
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3Release the blue connector locks and unplug the sensor by the connector housing. Do not pull on the wires.
-
4Place an absorbent cloth below the sensor, remove the old unit with the correct wrench on the hex body, and keep debris out of the threaded opening.
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5Start the replacement by hand to prevent cross-threading, then tighten to the torque in your Mercury / MerCruiser service manual for that engine.
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6Reconnect the plug until it locks, reconnect the battery, then run the engine per the service procedure while checking for leakage, warning messages, and a normal temperature reading.
Note: Professional installation is recommended for temperature sensors on EFI, DFI, Verado, and MerCruiser powerplants.
Troubleshooting & FAQ
How do I confirm this fits my engine?
+
Start with the number on the sensor you remove. If it reads 885342002, 885342001, or 8M0148668, match your engine family and serial to the compatibility table and the OEM temperature-sensor diagram before ordering.
Does this replace 885342001 and 8M0148668 as well?
+
Yes. 885342001 is an earlier number in the chain; 8M0148668 is the current Mercury functional replacement for 885342002. Confirm the engine model and serial as well as the stamped number.
Why might the replacement look slightly different?
+
Mercury superseded 885342002 with 8M0148668 as a functional replacement that may look different. Compare part numbers plus the threaded probe, hex body, sleeved lead, and blue-lock connector — not appearance alone.
Is this an OEM or aftermarket part?
+
This is an aftermarket replacement manufactured by JLM Marine. It is not a genuine Mercury Marine, Mariner, MerCruiser, or Quicksilver part. OEM numbers are listed only for cross-matching.
Important Notes
- Verify the OEM number on your original sensor and your engine serial against the compatibility table before ordering.
- Confirm thread engagement and connector lock after installation; check for leaks and correct temperature readings on first run.
- This is an aftermarket replacement and is not a genuine Mercury Marine / Mariner / MerCruiser / Quicksilver OEM component.
- Professional installation is recommended for EFI, DFI, Verado, and MerCruiser temperature sensors.
Why Choose JLM MARINE?
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Precision Fit: Cross-referenced to Mercury 885342002 (covers 885342001 / 8M0148668) for the EFI, DFI, Verado, and MerCruiser applications listed above.
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Quality Control: Each batch is inspected for dimensional consistency and workmanship.
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Direct from Manufacturer: Aftermarket marine temperature sensors engineered for reliable engine temperature feedback.