Description
SIERRA Johnson/Evinrude Water Pump Housing O-Ring – 18-7963 is a replacement water-pump housing O-ring/seal for specified Johnson/Evinrude outboard applications. It replaces BRP 331353 and is used at the impeller/water-pump housing where a sound seal is essential to pump efficiency.
This is a fit-specific cooling-system seal rather than a generic hardware O-ring. Confirm the OEM number during a water-pump service, especially on engines where multiple O-rings and gaskets are used in the same housing assembly.
Key Features
- Replaces Johnson/Evinrude 331353
- Used in specified outboard water-pump/impeller housing assemblies
- Helps seal the pump housing against leakage and pressure loss
- Fit-specific service seal for cooling-system maintenance
- Cross-references GLM and Mallory replacement numbers
Specifications
- Product type: Water-pump housing O-ring
- Application family: Johnson/Evinrude outboards
- Service area: lower-unit water pump / impeller housing
- Typical application range includes selected 60–300 HP models
- Confirm OEM number during water-pump service
Interchange
- Johnson/Evinrude: 331353
- GLM: 86660
- Mallory: 9-48217
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