Quick answer: Match the engine actually installed, pump rotation, mounting pattern, shaft and hub dimensions, pulley alignment, inlet and bypass locations, gasket or housing design, and production-range information.
Identify the engine and drive system
Record engine family, displacement, production information, accessory-drive layout, belt type, and any engine swap. Accessory-drive changes can alter which pump belongs on the engine.
Compare the pump itself
- Rotation specification
- Mounting-bolt pattern and housing shape
- Shaft length, hub height, and pulley pilot
- Pulley alignment
- Lower-hose inlet side and diameter
- Heater and bypass connections
- Gasket, backing plate, or integrated housing
- OEM/manufacturer number and production splits
Engine swaps and classics
When the engine, timing cover, or accessory drive is not original, research those installed components rather than relying on the chassis year. Photograph the old pump and belt routing before removal and record the successful replacement part number afterward.
Before buying
Compare manufacturer dimensions and application notes. Determine whether the listing includes only the pump or also a housing, gasket, seal, thermostat, or pulley. Confirm the cooling-system diagnosis before ordering.
Keep the engine configuration with the car.
WrenchFit stores engine, accessory-drive, part-number, measurement, and modification evidence so future research starts with what is actually installed.
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