1677 1996-1999 Chevy GMC HUMMER 6.5L Diesel CCW water pump - bolt on pulley ram For reverse counterclockwise rotation with
1677 1996-1999 Chevy GMC HUMMER 6.5L Diesel CCW water pump - bolt on pulley ram For reverse counterclockwise rotation withThe 1677 is designed to outperform GM's higher flow rate "130 gpm" pump released in late 1996. GM grew the impeller diameter by 10% to outflow their earlier pump designs versions and utilized a dual thermostat design to increase the flow rate and to prevent pressure surges within the cooling system. Thermostats Our impeller outperforms and outflows to help the 6. 5L diesel run a little cooler under a load. The impeller has an increased vane count, a
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