BMW N54 Replacement PCV Valve for 1M, 135i, 335i, 535i, 740i, X6, Z4 X6 (E71) 1/8" NPT Bungs Post IC

1/8" NPT Bungs Post IC for WMI or CPI

on 91 octane

can also be used to trigger WMI pumps and other accessories

providing confidence and support for your build

BMW N54 Replacement PCV Valve for 1M, 135i, 335i, 535i, 740i, X6, Z4 X6 (E71) 1/8" NPT Bungs Post ICThe RB N54 PCV Valve is an upgraded replacement PCV valve for your N54 Engine and is strongly recommended for your high performance (or higher mileage) N54. The OEM plastic PCV valve does not hold pressure well even when brand new. What the leaky PCV valve means is that when you are in boosted conditions, the "highly" pressurized PCV valve leaks turbocharged pressures into the crankcase. Pending on the condition of your PCV valve it could leak worse