Billet Tappet Cover KIT For Cummins 5.9L 12v 24v 1989 1990-1999 2000 2001 02 USA

Billet Tappet Cover KIT for Cummins

This billet tappet cover KIT for Cummins seals the side lifter gallery of the 5.9L 12v and 24v engines to prevent oil leaks.

Overview

This premium billet tappet cover KIT replaces the leak-prone factory stamped-steel cover with a heavy-duty CNC-machined plate. Designed to withstand high crankcase pressures, this billet tappet cover KIT provides a leak-free seal for high-performance diesel engines. It is an excellent choice for truck builders seeking durability and a clean engine bay aesthetic.

Built For Performance

• CNC-machined from high-grade billet aluminum for maximum rigidity and strength
• Thick construction prevents warping and ensures even sealing pressure
• Includes durable seals designed to withstand oil, heat, and high crankcase pressures
• Features a clean, corrosion-resistant finish for long-lasting engine bay appeal

Fits These Machines

• for Cummins 5.9L 12v Engines 1989 to 2002
• for Cummins 5.9L 24v Engines 1998.5 to 2002

On-The-Job Use

• Sealing the engine side gallery during heavy-duty diesel rebuilds
• Preventing oil leaks on high-mileage or high-boost diesel trucks
• Enhancing engine bay durability in custom diesel vehicle builds

Specs At A Glance

Good To Know

Q: Does this kit include the necessary gaskets and hardware? A: Yes, this kit comes with a durable perimeter seal and mounting hardware for a complete installation.

Q: Why do factory tappet covers leak? A: Stock covers are made of thin stamped steel that warps over time, whereas billet aluminum remains completely flat under pressure.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.