Got a classic 1964-1972 Chevy or GM car with the beefy 12-bolt rear end? This Cobra-Tek differential cover is a solid, simple upgrade. It's made from sturdy black steel and is designed to fit the specific housing that uses the 8.875-inch ring gear. Swapping out the stock cover for a fresh one like this can be a good move during a fluid change or if your old one is dented or rusty. While it might not have fancy cooling fins like some performance covers, a new steel cover ensures a clean, leak-free seal and just looks a lot tidier under the car. It's a direct replacement, so it should bolt right up using your existing gasket or RTV. A small but satisfying part to refresh the business end of your classic muscle car, truck, or cruiser. Always double-check your rear end model and ring gear size before ordering to make sure it's the right one.