Description
SIERRA O-Ring for Johnson/Evinrude – 18-7461 is a 41 mm (1.612 in) inside-diameter marine sealing O-ring used in Johnson/Evinrude and OMC service applications. It is sized to replace OEM 308458 and should be matched by part number and dimensions before installation.
The 2.6 mm (0.103 in) cross-section is specific to this seal. Keeping the OEM number in the product record helps distinguish it from the many visually similar O-rings used throughout older outboard and sterndrive assemblies.
Key Features
- Replaces Johnson/Evinrude/OMC 308458
- 41 mm (1.612 in) inside diameter
- 2.6 mm (0.103 in) cross-section
- Individual replacement seal
- Useful for OEM-number-based service and rebuild work
Specifications
- Product type: O-ring
- Inside diameter: 41 mm (1.612 in)
- Cross-section/width: 2.6 mm (0.103 in)
- Package quantity: 1
- Application family: Johnson/Evinrude/OMC
Interchange
- Johnson/Evinrude/OMC: 308458 / 0308458
- GLM: 81290

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