Description
SIERRA Circulating Water Pump Mounting Gasket – 18-0327
The SIERRA 18-0327 is a replacement circulating-water-pump mounting gasket used to seal the pump-to-engine mounting surface on applicable marine engines. Correct gasket replacement is important whenever the circulating pump is removed to prevent coolant leakage at the mounting flange.
- Circulating water-pump mounting gasket
- Fits applicable MerCruiser 4- and 6-cylinder engine applications
- Restores the pump-to-engine sealing surface
- Direct aftermarket replacement for common Mercury/MerCruiser gasket reference
- Single replacement gasket
Confirm the engine or drive model and serial number against the listed OEM interchange before ordering; closely related marine engines can use different gaskets or seals across production changes.
Specifications:
- Product type: water pump mounting gasket
- Application: circulating water pump
- Primary interchange: Mercury/MerCruiser 27-33956
Interchange / Cross-Reference:
- Mercury/MerCruiser 27-33956

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