Mercury MerCruiser MPI Idle Air Control Valve 862998
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Mercury MerCruiser Quicksilver 862998 is a genuine OEM idle air control valve for select fuel-injected MerCruiser MPI engines. Current Mercury dealer references identify 862998 as VALVE Idle Air and show it superseded to 8M0181068, which is the current replacement part number.
Key Features
- Genuine Mercury Marine OEM part number 862998.
- Current replacement part number is 8M0181068.
- Identified as an idle air control valve for MerCruiser MPI applications.
- Current dealer shipping specs are approximately 0.50 lb, 3.63 in. x 1.75 in. x 3.88 in.
- Current dealer reference notes that the gasket is sold separately.
Engine Compatibility
The strongest supportable fitment for 862998 is MerCruiser MPI fuel-injected engines with ECM 555. Current cross-reference sources connect it to 3.0L MPI, 4.3L Alpha/Bravo, 5.0L, 5.0LX, 5.7L, 350 MAG, 454 MAG MPI, 502 MAG MPI, 7.4L MPI MIE, and 8.2L MIE MPI applications, with fitment varying by year and control system.
Serial Number Fitment Notice
Verify fitment by exact engine serial number and the correct fuel injection / throttle body / intake parts diagram before ordering. This idle air control valve is tied to specific MPI and ECM 555 setups, so serial-based confirmation is the safest way to match the correct part.
When This Part Needs Replacement
This valve is typically replaced when the engine has unstable idle speed, stalling at idle, erratic idle control, or diagnostic testing points to a failed idle air control valve. That service guidance is a practical inference based on the part's documented role as the idle air control valve in MerCruiser MPI systems.
Installation Notes
Install 862998 or its current replacement 8M0181068 only after confirming the correct MerCruiser MPI application. Because current dealer references note that the gasket is sold separately, it is smart to confirm whether a new gasket or seal is needed before reassembly.
Alternate/Superseded Part Numbers
Current Mercury dealer references show 8M0181068 as the superseding replacement for 862998. Current cross-reference sources also associate Sierra 18-7701 with this idle air control valve family.
Parts Desk Insight
With idle air control valves, the important match is the exact MPI / ECM setup, not just the engine size. A quick serial-number check usually saves time because similar MerCruiser MPI engines can use different throttle-body and idle-control parts.
Shipping: Ships same or next day for fast Canada wide shipping. ā
Shipping information
In-stock and OEM parts: ship same or next business day.
Locally warehoused items: ship within 3ā4 business days.
Special-order items: timeline confirmed after order.
Returns & warranty
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If you are not fully satisfied, you may request a return within 30 days of delivery. All returns must receive pre-approval prior to being sent back. Unauthorized returns will not be accepted.
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Item must be in new, unused condition
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