RB PCV Valve O-Ring for BMW N54 - Replacement Seal (O-Ring Only) - Fits 135i, 335i, 535i, Z4 35i - RB01 Category_Brake Line G83 M4 Convertible

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RB PCV Valve O-Ring for BMW N54 - Replacement Seal (O-Ring Only) - Fits 135i, 335i, 535i, Z4 35i - RB01 Category_Brake Line G83 M4 ConvertibleRB01 Seal Ring for BMW N54 PCV Assembly Chasing down a pesky intake leak or crankcase pressure issue on your twin turbo N54 straight six? This RB01 seal ring is the precise rubber gasket that refreshes the PCV housing interface and restores an airtight crankcase breather system. We run this RB seal on our own N54 builds and customer cars with excellent results. Expect steadier idle quality, consistent boost control and smoother drivability when a