1677 1996-1999 Chevy GMC HUMMER 6.5L Diesel CCW water pump - bolt on pulley ram For reverse counterclockwise rotation with

For reverse counterclockwise rotation with serpentine belt drive only

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4L ford del rio wagon 58-57 V8 292 4

3L CHEVROLET K30/K3500 PICKUP 72-68 V8 305 5

7L buick regal 80-77 V8 307 5

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