Description
SIERRA Mercury Thermostat Cover Gasket – 18-0339
A cooling-system sealing gasket used between the thermostat cover and mating housing on compatible Mercury engines.
- Application: Selected Mercury applications using the 27-43006 thermostat-cover gasket family.
- Primary function: Thermostat cover gasket
- Key specification: Service area – Engine cooling
- OEM / aftermarket cross-reference: GLM: 30820; Mallory: 9-60004; Mercury: 27-43006 2, 27-430061, 27-430063, 27-430065, 27-430066, 27-430067, 27-430068
- Verify mating surfaces and follow the engine or drive service procedure during installation.
This part is application-specific. Confirm the OEM number and engine or drive configuration before installation.
Application: Selected Mercury applications using the 27-43006 thermostat-cover gasket family.
Specifications
- Component: Thermostat cover gasket
- Service area: Engine cooling
- Brand family: Mercury
Interchange / Replaces
- GLM: 30820
- Mallory: 9-60004
- Mercury: 27-43006 2, 27-430061, 27-430063, 27-430065, 27-430066, 27-430067, 27-430068

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