Sinister Diesel Oil Fill Cap for 1989–1998 Cummins 5.9L 12V | Blue

Give your 12-valve Cummins a clean finishing touch with the Sinister Diesel Oil Fill Cap. CNC-machined from solid T6-6061 billet aluminum, this direct replacement functions like the factory cap while adding a Sinister Blue anodized finish and etched Sinister Diesel logo.

Whether you're replacing your original cap or coordinating your engine-bay upgrades, it adds a bold blue accent without changing the cap's factory-style function.

Key features

• CNC-machined solid T6-6061 billet aluminum.
• Sinister Blue anodized finish for added surface protection.
• Etched Sinister Diesel logo.
• Direct replacement for the factory oil fill cap.

Engine fitment

1989–1998 Cummins 5.9L 12-valve diesel engines. Confirm your engine is the 12-valve version before ordering, particularly for a 1998 application.

What's included

• 1 Sinister Diesel oil fill cap.