Pontiac 4-Bolt 1955- Early 1963 Water Pump w/ Cast OEM Style Impeller APE-PN257A

MAY COME WITH EITHER CAST OR STAMPED STEEL IMPELLER. THIS PUMP SPINS CLOCKWISE DIRECTION (LOOKING AT THE FRONT). ALL PONTIAC ENGINES DID. THERE WAS NEVER A COUNTER-CLOCKWISE ROTATION. THE IMPELLERS LOOK DIFFERENT BECAUSE OF THE DYNAMICS OF THE BLADES. BOTH PUMPS PUSH THE COOLANT OUTWARD LIKE THEY SHOULD.