NRW Design B58 Billet Valve Cover - BMW Gen 2 B58 3.0L

Product Details

NRW's B58 Billet Valve Cover is the premier solution for BMW enthusiasts looking to upgrade the reliability, performance, and appearance of their Gen 2 B58 engine.

Designed to replace the factory plastic valve cover, this CNC-machined aluminum upgrade is engineered to handle the extreme demands of high-performance and tuned BMW applications. Available through ECS Tuning, the NRW Billet Valve Cover delivers the strength and durability needed to support increased boost, heat, and power output in motorsport and street environments alike.

Built with precision fitment for B58-equipped models such as the BMW G20 M340i, G22 M440i, and G42 M240i, this valve cover provides long-term sealing and eliminates common issues like warping, oil leakage, and cracked housings. Its clean, anodized finish makes it the ideal choice for aggressive builds and custom engine bay setups.

Eliminates the PCV system which is a well known failure point on the B58 engine. Designed to operate with an external catch can system, providing a more robust and reliable crankcase ventilation solution for both street and high-performance applications. Incorporates three -12 ORB/AN ports to efficiently evacuate excessive crankcase pressure under extreme operating conditions. Proper crankcase evacuation becomes increasingly important on high-boost applications and can help reduce valve train instability, including the cam timing movement commonly referred to as “VANOS walk,” often experienced at boost pressures exceeding 45 psi.

Included:

• 1 - NRW Design Billet B58 Valve Cover 
• 2 - 12AN swivel fittings
• 1 - 12 ORB/AN block-off fitting
• 1 - 1/8” NPT plug

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