Description
SIERRA O-Ring for OMC Cobra – 18-7409 is a dimensional replacement seal used in OMC Cobra sterndrive service applications. Its 30 mm inside diameter and 2.5 mm cross-section make it easy to confirm against the removed seal before installation.
Unlike the bulk 18-7409-9 package, 18-7409 is the individual O-ring SKU. It is also used as a component in several Sierra lower-unit and transom seal kits, making the exact part number important when replenishing a single seal.
Key Features
- Direct replacement for OMC/OMC Cobra 911871
- 30 mm (1.175 in) inside diameter
- 2.5 mm (0.100 in) cross-section
- Individual O-ring SKU; bulk 5-pack is Sierra 18-7409-9
- Used in multiple Sierra sterndrive seal-kit applications
Specifications
- Product type: O-ring
- Inside diameter: 30 mm (1.175 in)
- Cross-section/width: 2.5 mm (0.100 in)
- Package quantity: 1
- Application family: OMC Cobra sterndrive service
Interchange
- OMC/OMC Cobra: 911871
- GLM: 81230
- Sierra bulk package: 18-7409-9 (5-pack)
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