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Replaces: Volvo / OMC 3855194
Fits: Volvo / OMC 4.3L,5.0L,5.7L,7..4L & 8.1L
An IAC (idle air control) motor is designed to adjust the engine idle RPM speed by opening and closing an air bypass passage inside the throttle body. The PCM (powertrain control module) receives information from various sensors and will output signals to adjust the idle air control motor in or out to adjust engine idle speed by controlling engine idle air.
Performance Series Spark Plugs - A/C .460" reach, 5/8" hex, tapered
These are the most commonly used performance plugs today! These are a stock replacement for Mercruiser BBC and SBC motors.
Ribbed Suppressor Seal, which extends resistance and prevents spark 'flash over' and misfire. Nickel-chrome alloy sheathing to help prevent corrosion on center electrode.
Note: Colder plugs work best in supercharged applications and warmer plugs in general performance uses. Most cast iron cylinder heads use tapered spark plug while most aluminum heads use a gasket style plug.