VAC Billet Timing Chain Cover for BMW S54 – E46 M3, Z3 M, Z4 M (2001–2008)

Designed specifically for the BMW S54 engine, this VAC Billet Timing Chain Cover is a direct-fit upgrade for:

• 2001–2006 BMW E46 M3
• 2001–2002 BMW Z3 M (S54)
• 2006–2008 BMW Z4 M Roadster & Coupe

When building a serious S54 engine, the factory cast timing cover simply doesn’t match the precision of a fully upgraded billet setup. The VAC Billet Timing Chain Cover replaces the OEM cast unit with a CNC-machined billet aluminum cover that delivers improved strength, durability, and a show-ready finish.

Manufactured in-house at VAC Motorsports, this cover maintains factory mounting hardware for seamless installation while elevating the front of your engine with a high-shine, precision-machined appearance.

Whether you're completing a full S54 engine build or upgrading your E46 M3, Z3 M, or Z4 M, this billet timing cover is the finishing detail that separates a stock rebuild from a no-compromise build.

Features:

• CNC-machined billet aluminum construction
• Direct replacement for BMW S54 timing cover
• Compatible with E46 M3, Z3 M, and Z4 M
• Retains factory mounting hardware
• Stronger than OEM cast cover
• Manufactured in-house at VAC Motorsports