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Sierra Marine

Sierra Marine Powerhead Base Gaskets

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Sierra Marine offers a wide range of watercraft replacement parts—including these powerhead base gaskets. The composite seals are designed to fit specific applications from Johnson, Evinrude, GLM, Mallory, and more. Each gasket meets or exceeds the quality of the original equipment part to ensure correct fit and performance.

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Sierra Marine Powerhead Base Gaskets 18-99115

Sierra Marine Powerhead Base Gaskets 18-99115

Sierra Marine Powerhead Base Gaskets 18-99115

Marine Drive Unit Components, Powerhead Base Gasket, Yamaha Outboard, Each

Part Number: RRA-18-99115

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-2898

Sierra Marine Powerhead Base Gaskets 18-2898

Sierra Marine Powerhead Base Gaskets 18-2898

Marine Drive Unit Components, Powerhead Base Gasket, Johnson/Evinrude Outboard, Pair

Part Number: RRA-18-2898

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0112

Sierra Marine Powerhead Base Gaskets 18-0112

Sierra Marine Powerhead Base Gaskets 18-0112

Marine Drive Unit Components, Powerhead Base Gasket, Johnson/Evinrude Outboard, Each

Part Number: RRA-18-0112

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0115

Sierra Marine Powerhead Base Gaskets 18-0115

Sierra Marine Powerhead Base Gaskets 18-0115

Marine Drive Unit Components, Powerhead Base Gasket, Chrysler, Force, US Marine, Each

Part Number: RRA-18-0115

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0333

Sierra Marine Powerhead Base Gaskets 18-0333

Sierra Marine Powerhead Base Gaskets 18-0333

Marine Drive Unit Components, Powerhead Base Gasket, Mercury Marine, Each

Part Number: RRA-18-0333

Not Yet Reviewed

Estimated Ship Date: Dec 22, 2025 if ordered today

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Estimated Ship Date: Dec 22, 2025 if ordered today

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