Standard size. 30.1mm intake, 28.5mm exhaust.
BMW G16 840i xDrive B58 3.0L Intake Valves
Completely seals the factory head ports to prevent oil intrusion and unwanted vacuum leaks
Oversize. 30.6mm intake, 29mm exhaust.
Converts the head ports into a robust internal PCV system using precision-engineered check valves
Genuine BMW 97MM, 30, 1/4
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
This product was last offered at the strikethrough price on
08-22-2026