This Peterson Fluid Systems oil inlet adapter (-12 port x -10 x 3.750") pairs a -12AN port with a -10AN outlet in an aluminum body and provides a 3.750-inch length for front-of-block mounting. It is intended for small-block Chevy applications where positioning the oil feed over the water pump is required for specific plumbing layouts.
Peterson Fluid Systems Oil Inlet Fitting -12AN Portx - 10 x 3.750