Kingspeed Billet Tappet Cover, 98.5-02 24V Cummins. 

Featuring a hassle-free O-ring seal and (1) -12 baffled venting provision, we also include stainless mounting hardware and copper sealing washers.

The 24V tappet cover is designed to use the 3 factory hex bolts with our copper sealing washers to maintain functionality of mounting the ECM in the factory location.