Description
SIERRA Johnson/Evinrude Cylinder Head Gasket – 18-2957
Cylinder-head gasket for Johnson/Evinrude marine engine applications using OEM 307069. This Sierra replacement is intended to match the corresponding marine application and OEM interchange references listed below.
- Application: Johnson/Evinrude marine engine applications using OEM 307069
- Function: Seals the cylinder head to the block around combustion chambers, coolant passages and oil passages; correct gasket selection is critical to compression and cooling-system integrity.
- Component: Cylinder head gasket
- Primary OEM reference: 307069
- Interchange: GLM: 35990; Johnson/Evinrude Outboard: 307069
Confirm the engine/drive model, year or serial range and original part number before installation. Clean mating surfaces and inspect adjacent service parts so a worn companion component is not carried into the repair.
Specifications
- Component: Cylinder head gasket
- Primary OEM reference: 307069
Interchange / Replaces
- GLM: 35990
- Johnson/Evinrude Outboard: 307069

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