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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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Results 1 - 18 of 18

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: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0128

Sierra Marine Powerhead Base Gaskets 18-0128

Sierra Marine Powerhead Base Gaskets 18-0128

Gasket, Upper Casing, Marine, Powerhead Base Gasket, Johnson/Evinrude, Each

Part Number: RRA-18-0128

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0136

Sierra Marine Powerhead Base Gaskets 18-0136

Sierra Marine Powerhead Base Gaskets 18-0136

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

Part Number: RRA-18-0136

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0319

Sierra Marine Powerhead Base Gaskets 18-0319

Sierra Marine Powerhead Base Gaskets 18-0319

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

Part Number: RRA-18-0319

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 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: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 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: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99150

Sierra Marine Powerhead Base Gaskets 18-99150

Sierra Marine Powerhead Base Gaskets 18-99150

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99150

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99001

Sierra Marine Powerhead Base Gaskets 18-99001

Sierra Marine Powerhead Base Gaskets 18-99001

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99001

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99013

Sierra Marine Powerhead Base Gaskets 18-99013

Sierra Marine Powerhead Base Gaskets 18-99013

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99013

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99030

Sierra Marine Powerhead Base Gaskets 18-99030

Sierra Marine Powerhead Base Gaskets 18-99030

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99030

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99045

Sierra Marine Powerhead Base Gaskets 18-99045

Sierra Marine Powerhead Base Gaskets 18-99045

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99045

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99046

Sierra Marine Powerhead Base Gaskets 18-99046

Sierra Marine Powerhead Base Gaskets 18-99046

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99046

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-99079

Sierra Marine Powerhead Base Gaskets 18-99079

Sierra Marine Powerhead Base Gaskets 18-99079

Gasket, Upper Casing, Marine, Yamaha, Outboard, Each

Part Number: RRA-18-99079

Not Yet Reviewed

Estimated Ship Date: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

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: Oct 20, 2025 if ordered today

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Estimated Ship Date: Oct 20, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0103

Sierra Marine Powerhead Base Gaskets 18-0103

Sierra Marine Powerhead Base Gaskets 18-0103

Gasket, Upper Casing, Marine, Powerhead Base Gasket, Mercury Marine, Each

Part Number: RRA-18-0103

Not Yet Reviewed

Estimated Ship Date: Oct 21, 2025 if ordered today

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Estimated Ship Date: Oct 21, 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: Oct 21, 2025 if ordered today

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Estimated Ship Date: Oct 21, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-2865-9

Sierra Marine Powerhead Base Gaskets 18-2865-9

Sierra Marine Powerhead Base Gaskets 18-2865-9

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

Part Number: RRA-18-2865-9

Not Yet Reviewed

Estimated Ship Date: Oct 21, 2025 if ordered today

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Estimated Ship Date: Oct 21, 2025 if ordered today

Sierra Marine Powerhead Base Gaskets 18-0691

Sierra Marine Powerhead Base Gaskets 18-0691

Sierra Marine Powerhead Base Gaskets 18-0691

Gasket

Part Number: RRA-18-0691

Not Yet Reviewed

Estimated Ship Date: Oct 22, 2025 if ordered today

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Estimated Ship Date: Oct 22, 2025 if ordered today

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