PPE Heavy-Duty Deep Cast Aluminum Engine Oil Pan This new deep pan is cast from high-quality A356.0-T6 heat-treated aluminum alloy using permanent steel molds and holds an additional two quarts of oil. More fluid increases thermal stamina which helps promote longer service life. We’ve added machined grooves to the outer surface of the pan to increase the effective surface area and maximize thermal performance. The factory drain plug port is located above the bottom of the pan and about half a quart of dirty oil remains which immediately contaminates your fresh oil with sludge and ferrous metal. PPE solves that filthy problem with a flat, angled bottom, and a drain plug port engineered below the bottom surface of the pan to ensure a complete drain. A 1/8-inch NPT port is tapped and plugged into the side if you want to run an optional temperature sensor. We've also included a high-power Neodymium magnet equipped, billet, hardened stainless steel drain plug, This powerful plug pulls ferrous particles out of your oil before they damage your internals. GM 3.0L Duramax Engine Oil Pan - Replaces GM #55506665 In our testing on the LM2, we observed an increase in oil capacity from 7 quarts with the OE GM oil pan (GM #55506665) and filter to 9 1/2 quarts with the PPE Heavy-Duty Deep Oil Pan and PPE Premium Oil Filter 114000650. Recommendation DisclaimerIf using a copper washer SKU 114052002 on the drain plug, replace it with a new washer during each service. If using a compound washer SKU 114052004, inspect the washer during each service and replace as needed. About the factory oil pan - GM #55506665 The factory oil pan (GM #55506665) shown below was removed from a new truck with 1,000 miles on the odometer. Despite the low mileage, approximately half a quart of contaminated oil and sludge was found remaining in the pan. The factory style drain plug does not allow for full oil drainage and the factory filter cannot effectively remove all the contaminants from the engine oil. The PPE oil pan and oil filter offers a solution to this common issue and provides superior engine protection. Why Choose PPE's Heavy-Duty Deep Cast Aluminum Engine Oil Pan to replace GM #55506665? Engine efficiency is vital for any vehicle, and maintaining your engine oil pan is crucial because it serves as the reservoir for your vehicle's oil. In other words, if your engine oil pan is in optimal condition, your engine performs better. Our Heavy-Duty Deep Cast Aluminum Engine Oil Pan (Replaces GM #55506665) is a choice you won't regret.  Designed to fit the 2020-2024 models with precision, this heavy-duty deep cast aluminum engine oil pan ensures long-lasting durability and superior performance. Its high-quality construction material provides optimum heat dissipation and maximizes the life of your engine oil, thus enhancing your vehicle's overall performance. We understand the importance of high quality and perfect precision in replacement parts. With this in mind, our GM #55506665 Replacement, the PPE GM 3.0L Duramax Heavy-Duty Deep Cast Aluminum Engine Oil Pan meets high standards and is not only easy to install but also designed for longevity. Experience the true performance boost only a quality engine oil pan can offer today! Replaces GM Part #55506665