Pontiac 11-Bolt Early 1969 Short Hi Volume Flowkooler Cast Iron Water Pump w/ Billet Aluminum Impeller (4" Long) w/ New Impeller
The 1647 Flowkooler Hi-Flow water pumps are available. These pumps came in the early 1969 Pontiac's when they changed from the 8 bolt to 11 timing covers. Later in 1969 Pontiac moved to the 1649 style 4-1/2" water pump. These pumps are a drastic improvement over the factory cast impeller and and aftermarket stamped metal impellers.They feature an aluminum body with aluminum impeller made with a tight clearance to the divider plate so no modification necessary to allow optimum water flow.