18-7704 IAC Motor Replaces: 3855194 Fits: 4.3, 5.0, 5.7, 7.4L models


18-7704 IAC Motor Replaces: 3855194 Fits: 4.3, 5.0, 5.7, 7.4L models
SKU: 331604
Mfg# 18-7704
UNIT: Each
In Stock - Ships out in 1 Business Day


  • 18-7704 IAC MOTOR Replaces: 3855194 Fits: 4. 3, 5. 0, 5. 7, 7. 4L models



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Essential to starting engine


Searched high and low for this exact replacement for the OEM Idle Air Control Valve for my Mercruiser 5.7L TBI/MEFI3 configuration. This was an exact fit for my wiring harness relative to the mounting tangs. Top tang is longer than the lower and the plug orientation is as shown, facing aft for my wiring harness. Improvement in this IAC is the use of a metal stem attached to the valve plug, vs. the old plastic which breaks. This controls the air to the engine during start. Mounted on the side of the throttle body, easy access.


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Read the Sierra Warranty

Returns are available within 30 days from the date you receive your order and items must be in new, resalable condition, in the manufacturer's original packaging. See Details