MerCruiser® 8M0220728 Idle Air Control Valve
MerCruiser® 8M0220728 Idle Air Control Valve
Verified historical Mercury/MerCruiser references include 803149 and 853677. Historical part-number usage varies by application; these references are not presented as a proven linear supersession chain.
The 7.4L MPI L29, 350 MAG MPI-family, and MX 6.2L MPI mechanical-throttle applications use this IAC. The 454 MAG MPI and later ECM-555 generation use different IAC valves. Do not select by displacement or model name alone — verify by serial range.
Current Mercury/MerCruiser IAC valve 8M0220728. Verified historical Mercury/MerCruiser references include 803149 and 853677. Historical part-number usage varies by application; these references are not presented as a proven linear supersession chain.
Both 803149 and 853677 are legitimate historical references associated with the current 8M0220728 family. They are not mutually exclusive, and neither is presented as a proven predecessor of the other.
Application-specific IAC used on selected 7.4L L29, 350 MAG MPI-family, and MX 6.2L MPI mechanical-throttle applications. It is NOT the same IAC as the 454 MAG MPI / earlier EFI family (805224A1 / 8M0239245) or the ECM-555 / 496 / 8.1L family (862998 / 8M0181068). Verify your exact engine model, serial number, and existing OEM part number before ordering.
Aftermarket cross-reference: Sierra 18-7697 — aftermarket replacement cross-reference. Verify fitment by engine model and serial number before ordering. Sierra part numbers are aftermarket references only and are not Mercury OEM numbers.
Verified Engine Applications
Application relationships are verified against Mercury Marine primary source documentation.
Customers Replacing This Part Also Consider
Related components are shown only for verified engine/application matches. The 7.4L L29 uses a distinct component set from the 454 MAG MPI — do not mix.
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® MX 6.2L MPI — 377 V8 — 2000–2001