1964-1973 GM 12 Rear Differential Cover (YP C1-GM12P)Precision engineered Yukon Differential Cover built for reliable performance and direct fitment. Yukon Gear sets the standard for quality drivetrain components. Features Differential cover Chrome Cover for GM 12 bolt car Chrome cover for GM 12P These Yukon replacement diff covers take your rig a step beyond the boring factory look. They are the stock OE design finished in chrome Fits GM 12 bolt passenger car Application Notes GM 12 Bolt Passenger Car;