MerCruiser® 805223T Intake Air Temperature Sensor
MerCruiser® 805223T Intake Air Temperature Sensor
This IAT sensor applies to earlier EFI/MPI engine families equipped with a discrete MAP sensor (864856A1 or 8M0186195). It is NOT the correct sensor for ECM-555 generation engines — those use a combined MAPT sensor (8M0087834 / historical 885165) that integrates both pressure and temperature sensing. Verify your exact engine model, serial number, and existing OEM part number before ordering.
Aftermarket cross-reference: Sierra 18-7702 — aftermarket replacement cross-reference. Sierra part numbers are aftermarket references only and are not Mercury OEM numbers. Verify fitment by engine model and serial number before ordering.
Verified Engine Applications
Application relationships are verified against Mercury Marine primary source documentation. Verify your exact engine model, serial number, and existing OEM part number before ordering.
Customers Replacing This Part Also Consider
Related components are shown only for verified engine/application matches. Do not mix recommendation sets across different engine variants.
MerCruiser® 454 MAG EFI — 454 V8 — 1994–1996
MerCruiser® 454 MAG EFI Ski — 454 V8 — 1994–1996
MerCruiser® 454 MAG EFI Ski — 454 V8 — 1996–1997
MerCruiser® 454 MAG MPI — 454 V8 — 1996–1997
MerCruiser® 454 MAG MPI — 454 V8 — 1997–1998
MerCruiser® 454 MAG MPI Horizon MIE — 454 V8 — 1998
MerCruiser® 7.4L MPI MIE — 454 V8 — 1995–1996
MerCruiser® 7.4L MPI MIE — 454 V8 — 1997
MerCruiser® 7.4LX MPI — 454 V8 — 1996
MerCruiser® 7.4LX MPI — 454 V8 — 1997
MerCruiser® 454 MAG MPI — 454 V8 — 1999–2001
MerCruiser® 454 MAG MPI Horizon MIE — 454 V8 — 1999–2001
MerCruiser® 7.4L MPI L29 — 454 V8 — 1998–2001
MerCruiser® 7.4L MPI MIE L29 — 454 V8 — 1998–2001
MerCruiser® 350 MAG MPI — 350 V8 — 1999
MerCruiser® 350 MAG MPI — 350 V8 — 1999–2001
MerCruiser® 350 MAG MPI Horizon MIE — 350 V8 — 1999–2001
MerCruiser® 350 MAG MPI MIE — 350 V8 — 1999–2001
MerCruiser® 350 MAG MPI Ski — 350 V8 — 1999–2001
MerCruiser® 502 Magnum MPI — 502 V8 — 1993–1996
MerCruiser® 502 Magnum MPI — 502 V8 — 1997–1998
MerCruiser® 502 Magnum MPI — 502 V8 — 1999–2001
MerCruiser® MX 6.2L MPI — 377 V8 — 2000–2001
MerCruiser® 8.2L MPI MIE — 502 V8 — 1996
MerCruiser® 8.2L MPI MIE — 502 V8 — 1997–1998
MerCruiser® 8.2L MPI MIE — 502 V8 — 1999–2001
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