03-05 5.9 Cummins Billet Aluminum Valve Cover

Looking to dress up your 2003–2005 5.9 Cummins? This is the first piece of the puzzle.

Ditch the factory plastic valve cover and restrictive CCV filter setup, and upgrade to a precision-machined billet aluminum valve cover that delivers both style and performance. This isn’t just a visual upgrade—it’s a functional improvement built for real-world use.

Built for Performance & Reliability

Our design replaces the factory CCV filter with a baffled billet CCV canister, eliminating the need for costly replacement filters that clog over time. The result is a maintenance-free system that helps regulate crankcase pressure—especially under higher RPM and load conditions—keeping your engine running at its best.

Premium Construction

• Machined from solid 6061-T6 billet aluminum
• Includes a billet aluminum oil fill cap
• Baffled CCV canister with AN-style fittings
• Stainless steel mounting hardware included
• O-ring sealed surfaces for a clean, leak-free fit
• Available in machined finish or polished

For those looking to complete the setup, our braided stainless vent line kit is available separately (Part # GRD00170).

Fitment Notes (Important)

• Designed specifically for 2003–2005 5.9 Cummins
• Will NOT fit 2006–2007.5 trucks
• 2006–2007.5 Cummins engines use the same valve cover as a 6.7 Cummins