VTT BILLET CNC Valve Cover - BMW S55

VTT S55/N55 EWG Billet Aluminum Valve Cover

Performance. Durability. Style. 

VTT is proud to introduce the S55/N55 EWG Billet Aluminum Valve Cover — engineered for enthusiasts who demand performance and reliability without compromising design. Whether you’re replacing an aging OEM plastic cover or running a single turbo conversion that requires better clearance and heat resistance, this cover delivers on every front.

Designed to eliminate the failure-prone factory PCV system, the VTT Billet Valve Cover gives you complete control over your crankcase ventilation setup. Each unit is fully baffled to reduce oil carryover and maintain clean, efficient crankcase operation. For best results, pair it with a quality catch can system.

Valve Cover Features

• 100% CNC-Machined from 6061-T6 Billet Aluminum – Exceptional strength, precision, and durability

• Anodized Finish in Multiple Colors – Choose a clean, custom look for your engine bay

• Lightweight Design – 9.7 lbs (compared to 7.9 lbs stock; only a 1.8 lb difference)

• Fully Modular PCV Configuration – Configure your PCV system exactly how you want it

• Fully Baffled Ports – Prevents oil escape and ensures consistent crankcase pressure

• Ideal for Single Turbo Conversions – Provides improved clearance and superior heat resistance

• Durable & Reliable Construction – A significant upgrade from the OEM plastic cover

Kit Includes

• (1) Billet Aluminum Valve Cover

• (1) Complete Hardware Set

• (1) U.S.-Made Viton Gasket

Important Installation & PCV Notes

Upgrading to an aluminum valve cover removes the factory PCV system and its integrated functionality.
If you do not replace it with an external PCV setup, your S55 or N55 may experience smoking or oil bypass under boost or idle conditions.

We strongly recommend the following for optimal performance:

• Install an external low-side PCV to maintain vacuum at idle and assist turbo oil drainage

• Block off the head ports to relieve pressure on the valve cover gasket and prevent boost from entering the crankcase

• Pair this valve cover with VTT Modular Catch Can Kits and VTT Head Port Block-Off Kits for the best results

If you’re unsure about what setup you need, email us — we’re happy to help you get dialed in.

Upgrade Your S55 or N55 with Confidence

Eliminate factory weaknesses, control your PCV system, and enhance your engine bay with VTT’s Billet Aluminum Valve Cover — the perfect blend of form, function, and performance.

⚠️CALIFORNIA WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov

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