Earl's dry sump adapter is designed to optimize oil flow and allow the use of an aftermarket dry sump oil tank with the GM OEM LS3/LS7/LS9 (dry sump oil pans only). The billet aluminum adapter is anodized black and features (2) 12 AN O-ring female ports (port adapters available separately). The adapter uses an O-ring seal between the oil pan & adapter for a leak proof seal. Adapter includes O-ring seal & fasteners.