#626 replaces the oil filter adaptor and does away with the oil filter bypass while retianing the pressure bypass spring and plunger. This plate has generous .704" through holes for maximum oil flow to and from remote oil filter adaptors, oil coolers...ect. Tapped to a 1/2-14 NPT on the "in" and "out" of the plate these ports are capable of out flowing a -12 AN line.