Diagram Information for FlowKooler water pumps
(NOTE: These diagrams are for descriptive purposes only - they do not represent a specific part number)

| 1 | Fan Hub Working Height: Measurement taken from top of hub to mounting surface. | 4 | Impeller Diameter: Outside diameter of impeller blades. |
|---|---|---|---|
| 2 | Shaft Diameter: The diameter of the shaft extension through the hub. | 5 | Hub Bolt Holes (Center to Center): Between the fan blade mounting holes on the water pump fan hub. |
| 3 | Hub Diameter: The diameter across the center of the hub. | 6 | Inlet Outside Diameter: Lower radiator hose connection. |