Improved Racing EGM-200 Trap Door Oil Pan Baffle for GM LS Engines Directional trap door baffling completely encloses the oil pump pickup for maximum protection against oil starvation at high Gs Baffle plate with drain-back guides and drain-back slots help accelerate return of oil to the bottom of the sump while also preventing oil slosh and reducing oil consumption. Lightweight aluminum construction sheds 1.3 lbs over the factory baffle 100% bolt in, no welding necessary. This is a direct bolt-in replacement for the stock steel baffle in the stock oil pan Works with the factory cast aluminum oil pan, which is considered a structural part of the engine block and is less prone to failure or leaking than aftermarket sheet metal pans Made in USA. Lifetime manufacturer's warranty