2001-2026 Duramax Billet Aluminum Black Anodized Oil Fill Cap (WCF100443)

Billet aluminum oil fill cap for the 2001-2025 6.6L Duramax, black anodized. It is a complete cap, not a cover, and replaces the plastic factory cap directly with a machined cam lock and an O-ring seal. Matches the Wehrli billet coolant tank and brake reservoir caps.

CNC machined in the USA with the Wehrli logo engraved on the underside. Replaces GM 97350955, 97216410, 12573341 and 12677347. Also fits the 2.8L LWN Duramax.

Part Number: WCF100443

• CNC machined billet aluminum replacement for the factory oil filler cap
• Complete cap, not a cover
• O-ring seal and machined cam lock
• Black anodized finish
• Matches Wehrli billet coolant tank and brake reservoir caps
• Replaces GM 97350955, 97216410, 12573341, 12677347
• Engraved Wehrli logo on the underside
• Installs in seconds
• Made in USA

• Also fits the 2.8L LWN Duramax in the Colorado and Canyon.
• Clear anodized version is WCF100442.

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