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This Wehrli billet aluminum oil fill cap in black anodize is a complete OEM replacement for the factory plastic cap, intended to tidy the engine bay. CNC machined in the USA, it includes an o-ring seal and machined cam-lock engagement for a secure install. It fits 2001–2025 Chevy Silverado and GMC Sierra 2500/3500 6.6L Duramax trucks and lists compatibility with a broad range of GM LS and Duramax engines.
Wehrli 2001+ GM Duramax LB7/LLY/LBZ/LMM/LML/L5P Billet Oil Fill Cap - Black Anodized
