Original BMW B58 Valve Cover with Gasket Set for BMW 2, 3, 4, 5, 6, and 7 Series, X3 M40i, and X4 M40i (2016–2021)

Every B58 engine in this fitment takes the same Original BMW cylinder head cover (11-12-7-645-173), a complete valve cover with integrated PCV valve for the BMW M240i, 340i, 440i, 540i, 640i Gran Turismo, 740i, X3 M40i, and X4 M40i (2016–2021). A valve cover seals the top of the cylinder head and keeps dirt out of the valvetrain, and a PCV valve relieves crankcase pressure by routing those gases back into the intake. BMW's parts data calls this part the cylinder head cover, and production began in July 2015.

Original BMW Parts carry a 24-month parts warranty.

This cover is supplied as a full repair kit. Along with the cover itself, the package includes the valve cover gasket set, the high-pressure fuel pump gasket, encapsulated mounting screws, the ball pin for the engine cover, and fixing clamps for the VANOS actuators. The PCV valve is integrated into the cover.

Technical Details

• Manufacturer: BMW (genuine part)
• Part number: 11-12-7-645-173
• BMW part name: cylinder head cover
• Engine: B58
• Weight: 2.4 kg (5.4 lb)
• Production start: July 2015
• Country of manufacture: Germany
• Sold as: one cover assembly with gaskets and mounting hardware
• Warranty: Original BMW Parts carry a 24-month parts warranty

Common Questions

Do I need a new cover for a leaking valve cover gasket?
Not always. Valve covers are typically a lifetime component, and the gaskets are the usual cause of oil leaks; the cover itself needs replacing when it is warped or damaged.

What can damage a B58 valve cover?
High engine temperatures can warp or crack the cover. A blocked PCV valve can also build crankcase pressure that damages it.

PMB Performance can confirm B58 fitment across these chassis before your cover ships.

Fitment & Compatibility

Use the fitment table below to confirm the exact year, make, model, submodel, and any application notes before ordering. With over 20 years of parts and fitment experience, PMB Performance can match this to your VIN.