N54 Replacement PCV Valve for BMW 2006-2016 135i, 335i, 535i, 740i, X6, Z4 Choose one:RB PCV You've seen the dyno charts

You've seen the dyno charts showing how much more power the BMS open air filters make

This kit is capable of providing supplemental fueling to all BMW’s equipped with S55 engine

• Reads and deletes fault codes

allowing cooler

N54 Replacement PCV Valve for BMW 2006-2016 135i, 335i, 535i, 740i, X6, Z4 Choose one:RB PCV You've seen the dyno chartsThe N54 PCV Valve is an upgraded replacement PCV valve for your N54 BMW engine and is strongly recommended for your high performance (or higher mileage) N54. The OEM BMW 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. Depending on the condition of your PCV valve it could leak