Late Model Dirt Single Pass Oil Cooler This oil cooler has been a top performer in the Dirt Late Model Series. It works well in any oil cooler application but has been a popular choice for our Late Model Series. Dual flanges for easy mounting. -12 AN Inlet/Outlet with 1/2″ NPT fitting for pressure/temperature sensor. Hand built and completely tig-welded.   Inlet AN-12 Outlet AN-12 Width Overall 17.5″ Height Overall 12.5″ Depth 1.25″