Feature●Billet Aluminum Freeze Plugs●Fits 1989-2007 5.9 Liter 12 valve and 24 valve Cummins engine.●Successful with big boost, high pressures, and high RPM●Quality Michigan Motorsports Product●To install the APP billet freeze plugs: Remove your factory side freeze plugs; clean the bore with scotchbrite (make sure there is nothing in the bore that can cut the o-ring). Thread the bolt into the plug retainer 2 full turns and install the plug in the block. Torque to 20ftlb. The freeze plug should go in with hand pressure only.Description Our Billet Aluminum Freeze Plugs allow you to run your factory fans without blowing your freeze plugs under big boost, high pressures, and high RPM. These will fit a 1989-2007 5.9 Liter 12 valve and 24 valve Cummins engine. Included are the following: 1 Billet plugs to replace your OEM Plugs on the side of the cummins block. All our Billet Freeze Plugs have rubber O rings that are top quality along with stainless steel bolts.