Sierra 18-2548-9 Thermostat Cover Gasket 2-Pack for Johnson Evinrude OMC 332108
18-2548-9 OMC 103A
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Sierra 18-2548-9 Gasket
Premium Quality Replacement Thermostat Cover Gasket
The Sierra 18-2548-9 Thermostat Cover Gasket is a precision-engineered replacement part designed specifically for Johnson and Evinrude 3-cylinder outboard engines. This gasket ensures a watertight, high-pressure seal between the thermostat cover and the cylinder head, preventing leaks and maintaining optimal engine cooling temperatures.
Key Features
- ✔ Direct OE-fit replacement
- ✔ Designed for 3-Cylinder models
- ✔ High-temperature resistance
- ✔ Usually supplied as a 2-pack
Technical Specs
| SKU/MPN: | 18-2548-9 |
| Brand: | Sierra |
| Engine Type: | 3-Cylinder Outboard |
| Package Qty: | 2 Gaskets |
Compatibility / Fitment Guide
| Make/System | Model/Application | Year Range |
|---|---|---|
| Johnson / Evinrude | 65 HP (3-Cylinder) | 1970 - Newer |
| Johnson / Evinrude | 70 HP (3-Cylinder) | 1970 - Newer |
| Johnson / Evinrude | 75 HP (3-Cylinder) | 1970 - Newer |
OEM Cross Reference
| Manufacturer | Reference Number |
| BRP / OMC / Johnson / Evinrude | 332108, 0332108 |
| BRP / OMC / Johnson / Evinrude | 317226, 0317226 |
| GLM | 30170 |
Questions & Answers
Is this a genuine original part?
This is a premium quality aftermarket replacement part from Sierra Marine, designed to meet or exceed original BRP/OMC standards for fitment and sealing performance.
How do I know if it is compatible?
This part is specific to the 3-cylinder Johnson and Evinrude engines (65-75HP) from 1970 onwards. Please check your original gasket against the reference numbers 332108 or 317226.
What does the "-9" suffix mean on this part?
In the Sierra numbering system, the "-9" suffix typically indicates a retail-ready pack. For this SKU, it denotes a 2-pack containing two individual thermostat cover gaskets.
Note: Please verify your engine's model and serial number against the OEM references above before purchasing. Available at 4boats.co.uk.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
