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Wehrli

Wehrli 04.5-10 Duramax LLY/LBZ/LMM Billet Upper Valve Cover Set - Raw Aluminum

$375.00 $363.75 Save $11.25

SKU: W005 WCF100415-RAW

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INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: WCF100415-RAW

WCFab Billet Aluminum Upper Valve Cover sets fit LLY, LBZ, and LMM Duramax and are a great way to clean up your engine's appearance. Integrated o-ring seal replaces OEM gaskets and prevents the need for use of silicone sealers. Includes countersunk stainless steel fasteners and black anodized #10 JIC (-10AN) PCV fittings. Finished in raw aluminum ready for polishing or painting standard. Custom Color Powder Coat finishes available as an optional upgrade and carry additional lead time.We recommend pairing these with our Top Outlet Billet Thermostat Housing and Upper Coolant Pipe kits (or a forward facing thermostat setup) because these valve covers do not include brackets for the side mount routing of the OEM setup.

Wehrli Custom Fab Valve Cover Set, Billet Upper, 04.5-10 Duramax LLY/LBZ/LMM, Raw Aluminum

MIA's Description

The Wehrli WCF100415-RAW Billet Aluminum Upper Valve Cover set provides a clean and enhanced appearance for LLY, LBZ, and LMM Duramax engines from 2004.5-2010. Featuring an integrated o-ring seal for superior sealing, flush head stainless steel hardware, and black anodized #10 JIC (-10AN) PCV fittings, these valve covers are made from CNC machined billet aluminum and come in a raw finish, ready for customization. Modifications to wire harness tabs and mounting brackets are required for installation as they do not retain OEM mounting bosses.

Fitment

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Specifications

BrandWehrli
Part NumberW005 WCF100415-RAW

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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