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 SHIPS FROM MANUFACTURER 1030606-5/16Coolers, providing 22% more cooling over other designs. The 200 Micro Extruded passages provide a large surface area to transfer heat for external air flow cooling while turbulent oil flow design promotes a more complete cooling. Large 5/8-inch ports prevents inlet/outlet restriction and furnace bra... BD Diesel Xtruded Trans Oil Cooler - 5/16 inch Cooler Lines 1991-1993 GMC C3500 Sierra / Sierra SLX 1991-1999 GMC C3500 Sierra SLE 1994-1999 GMC C3500 Sierra SL / Sierra SLT $735.95 |