MerCruiser® 8M0186195 MAP Sensor
MerCruiser® 8M0186195 MAP Sensor
Both 861249A1 and 881731 route to current Mercury replacement 8M0186195. The fact that Mercury currently resolves both historical numbers to the same replacement does NOT mean every historical application is interchangeable. Compatibility remains application-specific.
This is a MAP (Manifold Absolute Pressure) sensor — it measures pressure only. Do not confuse with the MAPT sensor (885165 / 8M0087834) used in ECM-555 applications.
This MAP sensor applies to the 4.3L EFI, 5.0L EFI, 7.4L L29, 496 Mag, and 8.1L MIE engine families. It is NOT the correct sensor for 454 MAG MPI / 502 Magnum MPI (those use 864856A1), and NOT the correct sensor for ECM-555 applications (those use MAPT 885165 / 8M0087834). Verify your exact engine model, serial number, and existing OEM part number before ordering.
Verified Engine Applications
Application relationships are verified against Mercury Marine primary source documentation. The convergence of 861249A1 and 881731 on this replacement does not imply interchangeability across all historical applications.
| Engine Model | Years | Serial Range | Historical OEM | Status |
|---|---|---|---|---|
| MerCruiser® 4.3L EFI (GEN+) TBI — GM 262 V6 | Verification in Progress | 0L012009–0L618999 | 861249A1 | Verification in Progress |
| MerCruiser® 4.3L EFI (GEN+) TBI — GM 262 V6 | Verification in Progress | 0L619000–0M299999 | 861249A1 | Verification in Progress |
| MerCruiser® 4.3L EFI (GEN+) TBI — GM 262 V6 | Verification in Progress | 0M300000–0M322780 | 861249A1 | Verification in Progress |
| MerCruiser® 5.0L EFI — GM 305 V8 | 1998 | 0L012052–0L339999 | 881731 | Verified |
| MerCruiser® 5.0L EFI — GM 305 V8 | 1999–2001 | 0L331631–0M299999 | 881731 | Verified |
| MerCruiser® 5.7L EFI — GM 350 V8 | 1998 | 0L010035–0L339999 | 881731 | Verified |
| MerCruiser® 5.7L EFI — GM 350 V8 | 1999–2001 | 0L325977–0M299999 | 881731 | Verified |
| MerCruiser® 7.4L MPI L29 — 454 V8 | 1998–2001 | 0L010003–0M024330 | 881731 | Verified |
| MerCruiser® 7.4L MPI MIE L29 — 454 V8 | 1998–2001 | 0L010003–0L674613 | 881731 | Verified |
| MerCruiser® 8.1L MIE — 496 V8 | 2001–2004 | 0M026000–0W089999 | 881731 | Verified |
| MerCruiser® 8.1L MIE — 496 V8 | 2004–2008 | 0W090000 and up | 881731 | Verified |
| MerCruiser® 8.1L HO MIE — 496 V8 | 2001–2004 | 0M026000–0W089999 | 881731 | Verified |
| MerCruiser® 8.1L HO MIE — 496 V8 | 2004–2008 | 0W090000 and up | 881731 | Verified |
| MerCruiser® 496 Mag — 496 V8 | 2001–2004 | 0M025000–0W059999 | 881731 | Verified |
| MerCruiser® 496 Mag — 496 V8 | 2004–2008 | 0W060000 and up | 881731 | Verified |
| MerCruiser® 496 Mag HO — 496 V8 | 2001–2004 | 0M025000–0W059999 | 881731 | Verified |
| MerCruiser® 496 Mag HO — 496 V8 | 2004–2008 | 0W060000 and up | 881731 | Verified |
| MerCruiser® 496 Mag DTS — 496 V8 | 2001–2004 | 0M025000–0W059999 | 881731 | Verified |
| MerCruiser® 496 Mag DTS — 496 V8 | 2004–2008 | 0W060000 and up | 881731 | Verified |
| MerCruiser® 496 Mag HO DTS — 496 V8 | 2001–2004 | 0M025000–0W059999 | 881731 | Verified |
| MerCruiser® 496 Mag HO DTS — 496 V8 | 2004–2008 | 0W060000 and up | 881731 | Verified |
Customers Replacing This Part Also Consider
Related components are shown only for verified engine/application matches. The 7.4L L29 and 496/8.1L use different injector families — do not mix recommendation sets.
MerCruiser® 4.3L EFI (GEN+) TBI — GM 262 V6 — Verification in Progress
MerCruiser® 5.0L EFI — GM 305 V8 — 1998
MerCruiser® 5.0L EFI — GM 305 V8 — 1999–2001
MerCruiser® 5.7L EFI — GM 350 V8 — 1998
MerCruiser® 5.7L EFI — GM 350 V8 — 1999–2001
MerCruiser® 7.4L MPI L29 — 454 V8 — 1998–2001
MerCruiser® 7.4L MPI MIE L29 — 454 V8 — 1998–2001
MerCruiser® 8.1L MIE — 496 V8 — 2001–2004
MerCruiser® 8.1L MIE — 496 V8 — 2004–2008
MerCruiser® 8.1L HO MIE — 496 V8 — 2001–2004
MerCruiser® 8.1L HO MIE — 496 V8 — 2004–2008
MerCruiser® 496 Mag — 496 V8 — 2001–2004
MerCruiser® 496 Mag — 496 V8 — 2004–2008
MerCruiser® 496 Mag HO — 496 V8 — 2001–2004
MerCruiser® 496 Mag HO — 496 V8 — 2004–2008
MerCruiser® 496 Mag DTS — 496 V8 — 2001–2004
MerCruiser® 496 Mag DTS — 496 V8 — 2004–2008
MerCruiser® 496 Mag HO DTS — 496 V8 — 2001–2004
MerCruiser® 496 Mag HO DTS — 496 V8 — 2004–2008