Differential Cover Kit, Model 20, Polished Finned Aluminum, 1965-1988 AMC, Jeep, Eagle - Drop Ships In Approx. 3-4 weeksP N: DC ASM 5048 PK This AMC Model 20 differential cover features a drain hole, fins and aluminum construction. The fins, aluminum construction and extra capacity dissipate heat. The fins have the traditional straight fin design. This cover also features thick walls and gasket flanges to add strength to the differential housing and to provide a uniform clamping force on the gasket surface for a secure seal. Aluminum is a great material for heat