Clean up the engine bay of your 2001-2023 Duramax with this Billet Aluminum Black Anodized Oil Fill Cap from WCFab. This is a complete cap, not a cover. Direct OEM replacement for the factory plastic part. Includes o-ring seal and machined cam lock engagement. CNC machined in the USA.

Direct replacement for the following GM OEM model numbers: 97350955, 97216410, 12573341, 12677347

Also compatible with 2.8L LWN Duramax and the following GM LS gasoline engines:

• LSX
• 4.8L V8 - LR4, LY2, L20
• 5.3L V8 - LC9, LH6, LH8, LH9, LMF, LM4, LM7, LY5, LMG, LS4, L33, L59
• 5.7L V8 - LS1, LS6
• 6.0L V8 - LQ4, LQ9, LS2, L76, L98, L77, LY6, L96, LFA, LZ1
• 6.2L V8 - LS3, LS9, LSA, L92, L99 
• 7.0L V8 - LS7