Made of cast aluminum, aFe's transmission and engine oil pans adds 1-6 more quarts over stock, depending on application. The additional capacity ensures better heat dissipation and prolongs the life of your engine or transmission. Internal fins (depending on application) absorb heat from the oil and transfers heat to the external fins for better towing performance or every day driving. Included in the features are a neodymium magnetic drain plug that functions as an open filter.