XDP Billet Aluminum Oil Cap XD477 For 2001-2021 GM 6.6L Duramax Apparel or a failed head gasket

or a failed head gasket

Removing the factory housing helps reduce maintenance costs

This flex is not visible to the naked eye and when inspecting the factory pushrods

with brand new hardware

Want the benefits of the in-tank pump but need to run your own fuel lines or aftermarket filters

XDP Billet Aluminum Oil Cap XD477 For 2001-2021 GM 6.6L Duramax Apparel or a failed head gasketCustomize the underhood of your 2001 2021 GM 6. 6L Duramax when you add the XDP Billet Aluminum Oil Cap XD477. Each cap features a CNC machined billet aluminum construction making it the perfect replacement for the plastic factory cap. The XD477 comes ready to install with a durable black anodized finish that provides you with a sleek and custom look. Features: Direct Fit Upgrade Black Anodized Finish CNC Machined Billet Aluminum Construction