Peterson Fluid Systems oil inlet adapter (-10 port x -12 x 3.750") in aluminum provides a -10AN to -12AN transition with a 3.750-inch reach for front-of-block installation. Intended for small-block Chevy engine front-mounted oil feeds over the water pump, this fitting helps position and route the oil inlet for compatible plumbing arrangements.
Peterson Fluid Systems Oil Inlet Fitting -10AN Portx - 12 x 3.750