911 Air Box Pop Off Valve for Porsche 911, 930
911 AIR BOX POP OFF VALVE
R911110904WO - Replacement/Accessory
Price: $28.50
Description
Prevent costly air box explosions! Porsche 911 engines from 1973 on have had the bad habit of backfiring upon cold-starting. And blowing a hole in the air box. When this pop valve is installed in the air box and a backfire occurs, the valve will instantly open and release the backfire pressure. Afterwards, the pop valve then automatically closes and the engine continues to run. The air box pop valve conforms to all emission regulations and has no effect on performance or gas mileage.
Fits (Click to view section):
911 1974-77
930 1975-77
911 1978-83
911 1970-73
911 1965-69
Notes:
SC 3.0 (78-83) / 3.0 CARRERA (76-77) / 911 2.7 (74-77) / 911L (68-68) / 911S (67-69) / 911E (69-69) /
911T (68-69) / 911 (65-68)
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