Fits all A727 (RH36, RH37) A518 (46RH, 46RE) A618 (47RH, 47RE, 48RE).Our Hi Tek deep transmission pans are constructed from A356 T6 aluminum and are cast with thick internal and external fins, adding additional strength and increased cooling properties. The deep pan design increases fluid capacity by 4 quarts over the stock O. E. steel pan. All these features combined help dissipate heat quicker netting lower transmission and fluid temperatures prolonging the life of your transmission, transmission fluid and