Fits: 2011–2016 Chevrolet Silverado 2500 HD 2011–2016 Chevrolet Silverado 3500 HD 2011–2016 GMC Sierra 2500 HD 2011–2016 GMC Sierra 3500 HD aFe46-70342Diff CoversaFe Power's new engine oil pan brings performance engineering to the protection of your GM Silverado/Sierra HD with Duramax turbo diesel engines. This oil pan is constructed out of durable A356 cast aluminum with machined fins for maximum strength and styling. This cover incorporates a magnetic drain plug to capture loose particles for maximum engine protection. All necessary hardware is included for a hassle-free installation. Built-in External and Internal Fins: Built-in External and Internal fins transfer heat from the fluid to the outside air for maximum cooling. Magnetic Drain Plug: This system incorporates a magnetic drain plug that captures loose particles for maximum engine protection. When it comes to engineering for power, performance, protection and value, aFe Power is the only choice.aFe Pro Series engine oil pans are constructed out of durable cast aluminum with a black powdercoat finish and machined fins for maximum strength and styling. The built-in external and internal fins transfer heat from the oil to the outside air for maximum cooling. Pro Series pans offer increased oil capacity over stock for better performance over a longer duration and incorporate a magnetic drain plug to capture loose particles for maximum engine protection. RTV silicone and all necessary hardware is included for a hassle-free installation. When it comes to engineering for power, performance, protection, and value, aFe Power is the only choice.