Aftermarket Impeller - OMC 40-75hp (2 & 3Cyl) Supplied with 2 keys - Use White Key with 1975-1988 motors - Use Black Key with 1989-2005 motors
Choose aftermarket impeller 260303 for the specific engine applications and OEM references listed below. This replacement component is intended for a matching marine water-pump installation, with its dimensions and drive arrangement providing additional checks before you order.
Match the original manufacturer’s part number for the exact engine and production year. Horsepower or engine brand alone is not enough: engines in the same power range can use different pump components. Where a model or year restriction is listed, keep that restriction when checking your engine.
Two keys are supplied for the specified OMC application: use the white key with 1975–1988 motors and the black key with 1989–2005 motors. Confirm the engine year and follow the engine service instructions when selecting the key for installation.
For a physical comparison, check the 91.5 mm outside diameter and 25.4 mm height against the required pump specification. Also inspect the shaft connection; a keyed, pin, flat or spline drive must match the installation rather than simply fitting within the housing.
Follow the pump or engine service instructions for removal, installation and checking the completed work. Assess any separately required seals, gaskets or other service components for that installation before beginning the job. Keep this product code with your maintenance records to make the next like-for-like replacement easier to identify.
Choosing and using this product
If keeping an impeller aboard as a spare, label it with the compatible pump and part reference. Store it according to the manufacturer’s guidance so it remains easy to identify when needed. A spare is most useful when its fit has been checked before a service is due.
Product details
- OMC 40-75hp (2 & 3Cyl) Supplied with 2 keys - Use White Key with 1975-1988 motors - Use Black Key with 1989-2005 motors. OEM reference: 437080, 396725, 432954
- Product code: 260303
- Outside diameter: 91.5 mm
- Inside diameter: 19.1 mm
- Height: 25.4 mm
- Drive type reference: 10
- Blade count: 6