Spectre’s Differential Covers are made to OEM specifications and are triple chrome plated for a lasting shine. Designed to protect the intricate moving parts of the differential, Spectre’s covers add an extra layer of protection to the vehicle’s underside. Featuring a 10-bolt design and fits 1995 and up Chevy/GMC 3500 with 13 inch ring gear, 1995 and up Dodge Ram 3500 Pickup rear, and 1995 and up Ford F350/F450/F550 two or four wheel drive rear differentials. Includes 12 SAE standard chrome bolts for installation. You’ll need to supply your own bolts if your application requires metric bolts.