Bosch New 0280140013 Volvo Auxiliary Air Valve Fit 140 1800
BOSCH New 0280140013 Volvo Auxiliary Air Valve Fit 140 1800
The auxiliary air valve increases idle speed when the engine is cold by allowing more air into the engine. It prevents the engine from stalling before it reaches its operating temperature, especially when the oil is thicker and combustion is less efficient. As the engine warms up, a thermostatic element in the valve closes, restoring the idle to normal RPMs.
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AUXILIARY AIR SLIDE VALVE