Spectre Performance 6086 10.5" 14-Bolt Differential Cover for GM Truck Fits the following vehicles with a 10.5 inch ring gear: 73-'87 Chevy/GMC 3/4 & 1 Ton 2/4WD (rear), '75-'00 Chevy/GMC Duallie 2/4WD (rear), '88-'99 SubuRBan 3/4 Ton 2/4WD (rear). Steel construction 14 bolt design Made to OEM specifications Triple chrome plated