KM 4BT Billet Valve Covers 082323-1NOF-Pkt

Upgrade your engine bay with the KM 4BT Billet Valve Covers 082323-1NOF-Pkt, precision-machined specifically for the Cummins 4BT 8-valve platform. Whether you’re restoring a mechanical 4BT or building a fully upgraded performance setup, these billet covers provide the durability, clearance, and visual refinement that factory stamped steel covers simply can’t match.

This set includes four individual billet aluminum valve covers, giving your 4BT a clean, aggressive appearance while improving long-term sealing reliability. One cover features an integrated oil fill port paired with a billet aluminum cap, eliminating the need for separate filler modifications.

Precision Fit for Cummins 4BT Engines

The KM 4BT Billet Valve Covers are engineered exclusively for Cummins 4BT 8-valve engines. With a total height of 3.3 inches, these covers sit taller than stock and clear most aftermarket head studs. That extra clearance makes them ideal for performance builds running upgraded fasteners or modified cylinder heads.

Each cover seals to the head using individual O-rings instead of traditional gaskets. This design promotes consistent sealing pressure and simplifies maintenance.

If you’re upgrading the top end of your 4BT, you may also want to explore:

• Our full selection of Cummins 4BT engine parts

• Performance upgrades in our Cummins valve train components

• Additional Cummins billet engine accessories

Pocket Milled Billet Construction

The decorative pocket milling across the top of each cover adds a refined, machined look that pairs well with polished intakes, custom piping, and detailed engine bays. These covers are ideal for show builds, resto-mod projects, and clean industrial conversions.

Key Features

• Fits Cummins 4BT 8-valve engines

• Four individual billet aluminum covers

• Integrated oil fill hole with billet cap

• 3.3″ total height for stud clearance

• Taller than stock configuration

• Individual O-ring sealing system

• Decorative pocket milled design

• Part Number: 082323-1NOF-Pkt

If you prefer a different style, we also offer a one-piece billet valve cover option for the 4BT platform.