Chevrolet Small Block long style water pump - 6.932 inch hub height, 3/4 inch bearing, 5/8 inch shaft, CCW Rotation. Fits 1987-95 Passenger Cars and Light Trucks. The Stage 1 Cast Iron Water Pumps use new original equipment castings, but are machined and assembled by Stewart Components to exacting standards. Models with 3/4 inch ball/roller bearings offer five times the strength of standard bearings. Precision ground dual pattern fan hub for perfect pulley alignment. High Flow impeller.