Fits both stock* and aftermarket oil pansLouvered design allows oil thrown from the rotating assembly to drain into the sump without splashing back, reducing the windage and increasing powerFeatures dual cylinder bank drain back for superior oil control and horsepower gainsGoes between the engine block and oil panConstructed out of 14 gauge steel with a clear zinc finishIncludes oil pan studs and nuts*On some Mustang Cobra applications, diverters in factory oil pan and oil pump pickup need to be trimmed