-15% sale
Sierra Not Qualified for Free Shipping Sierra Baffle to Block Attenuator Gasket #18-0373
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Sierra Sierra Baffle to Block Attenuator Gasket #18-0373 $2.13 $2.50
Sierra 18-0373 Engine GasketsBaffle to Block Attenuator GasketOEM Interchange:MERCURY MARINE: 27-78411Sierra Baffle to Block Attenuator Gasket #18-0373Normalized SKU: 180373UPC Code: 030999873583
-17% sale
Sierra Not Qualified for Free Shipping Sierra Gasket Set #18-0377
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Sierra Sierra Gasket Set #18-0377 $38.67 $46.16
Sierra 18-0377 Engine GasketsGasket SetSierra Gasket Set #18-0377Normalized SKU: 180377UPC Code: 808282188764
-17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Base Gasket #18-0369
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Sierra Sierra Powerhead Base Gasket #18-0369 $9.80 $11.69
Sierra 18-0369 Engine GasketsPowerhead Base GasketOEM Interchange:MERCURY MARINE: 27-75909Sierra Powerhead Base Gasket #18-0369Normalized SKU: 180369UPC Code: 030999873545
-17% sale
Sierra Not Qualified for Free Shipping Sierra Gasket Set #18-0368
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Sierra Sierra Gasket Set #18-0368 $8.20 $9.79
Sierra 18-0368 Engine GasketsGasket SetSierra Gasket Set #18-0368Normalized SKU: 180368UPC Code: 808282188658
-16% sale
Sierra Not Qualified for Free Shipping Sierra Heat Exchanger End Gasket #18-0365
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Sierra Sierra Heat Exchanger End Gasket #18-0365 $6.32 $7.44
Sierra 18-0365 Engine GasketsHeat Exchanger End GasketOEM Interchange:MERCURY MARINE: 27-75450Sierra Heat Exchanger End Gasket #18-0365Normalized SKU: 180365UPC Code: 030999873521
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra Baffle Plate Gasket #18-0371
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Sierra Sierra Baffle Plate Gasket #18-0371 $7.00 $8.24
Sierra 18-0371 Engine GasketsBaffle Plate GasketOEM Interchange:MERCURY MARINE: 27-78409Sierra Baffle Plate Gasket #18-0371Normalized SKU: 180371UPC Code: 030999873569
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Industrialuction Silencer Cover Gasket #18-0359
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Sierra Sierra Industrialuction Silencer Cover Gasket #18-0359 $10.15 $12.12
Sierra 18-0359 Engine GasketsInduction Silencer Cover GasketOEM Interchange:MERCURY MARINE: 27-672751Sierra Industrialuction Silencer Cover Gasket #18-0359Normalized SKU: 180359UPC Code: 030999873460
-17% sale
Sierra Not Qualified for Free Shipping Sierra Valve Cover Gasket #18-0352
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Sierra Sierra Valve Cover Gasket #18-0352 $11.61 $13.86
Sierra 18-0352 Engine GasketsValve Cover GasketOEM Interchange:MERCURY MARINE: 27-56173OMC: 913758VOLVO: 3852818Sierra Valve Cover Gasket #18-0352Normalized SKU: 180352UPC Code: 030999873392
-17% sale
Sierra Not Qualified for Free Shipping Sierra Valve Cover Gasket #18-0347
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Sierra Sierra Valve Cover Gasket #18-0347 $18.24 $21.77
Sierra 18-0347 Engine GasketsValve Cover GasketOEM Interchange:MERCURY MARINE: 27-52145OMC: 3852693OMC: 912981OMC: 913277VOLVO: 3852693Sierra Valve Cover Gasket #18-0347Normalized SKU: 180347UPC Code: 808282257347
-17% sale
Sierra Not Qualified for Free Shipping Sierra Oil Pan Gasket Set #18-0348
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Sierra Sierra Oil Pan Gasket Set #18-0348 $33.54 $40.03
Sierra 18-0348 Engine GasketsOil Pan Gasket SetOEM Interchange:CRUSADER: 22048MERCURY MARINE: 27-52550OMC: 3931593OMC: 508871Sierra Oil Pan Gasket Set #18-0348Normalized SKU: 180348UPC Code: 030999873354
-16% sale
Sierra Not Qualified for Free Shipping Sierra Water Pump Gasket #18-0345
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Sierra Sierra Water Pump Gasket #18-0345 $7.29 $8.58
Sierra 18-0345 Engine GasketsWater Pump GasketOEM Interchange:MERCURY MARINE: 27-822189Sierra Water Pump Gasket #18-0345Normalized SKU: 180345UPC Code: 808282145798
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra Power Trim Hose Connector Plate Gasket #18-0342
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Sierra Sierra Power Trim Hose Connector Plate Gasket #18-0342 $1.39 $1.64
Sierra 18-0342 Engine GasketsPower Trim Hose Connector Plate GasketOEM Interchange:MERCURY MARINE: 27-476441Sierra Power Trim Hose Connector Plate Gasket #18-0342Normalized SKU: 180342UPC Code: 030999873309
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Valve Cover Gasket #18-0346
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Sierra Sierra Valve Cover Gasket #18-0346 $10.49 $12.52
Sierra 18-0346 Engine GasketsValve Cover GasketOEM Interchange:MERCURY MARINE: 27-49936OMC: 3930912Sierra Valve Cover Gasket #18-0346Normalized SKU: 180346UPC Code: 030999873330
-16% sale
Sierra Not Qualified for Free Shipping Sierra Thermostat Gasket #18-0339
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Sierra Sierra Thermostat Gasket #18-0339 $7.75 $9.12
Sierra 18-0339 Engine GasketsThermostat GasketOEM Interchange:MERCURY MARINE: 27-43006-2Sierra Thermostat Gasket #18-0339Normalized SKU: 180339UPC Code: 030999873279
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Exhaust Plate Gasket #18-0341
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Sierra Sierra Exhaust Plate Gasket #18-0341 $10.82 $12.91
Sierra 18-0341 Engine GasketsExhaust Plate GasketOEM Interchange:MERCURY MARINE: 27-430086Sierra Exhaust Plate Gasket #18-0341Normalized SKU: 180341UPC Code: 030999873293
-15% sale
Sierra Not Qualified for Free Shipping Sierra Mounting Plate to DriveShaft Housing Gasket #18-0334
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Sierra Sierra Mounting Plate to DriveShaft Housing Gasket #18-0334 $4.49 $5.28
Sierra 18-0334 Engine GasketsMounting Plate to DriveShaft Housing GasketOEM Interchange:MERCURY MARINE: 27-39402Sierra Mounting Plate to DriveShaft Housing Gasket #18-0334Normalized SKU: 180334UPC Code: 030999873231
-17% sale
Sierra Not Qualified for Free Shipping Sierra Gasket Set #18-0337
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Sierra Sierra Gasket Set #18-0337 $27.33 $32.62
Sierra 18-0337 Engine GasketsGasket SetSierra Gasket Set #18-0337Normalized SKU: 180337UPC Code: 808282188757
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra Push Rod/Lifter Cover Gasket #18-0329
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Sierra Sierra Push Rod/Lifter Cover Gasket #18-0329 $1.58 $1.86
Sierra 18-0329 Engine GasketsPush Rod/Lifter Cover GasketOEM Interchange:MERCURY MARINE: 27-34209Sierra Push Rod/Lifter Cover Gasket #18-0329Normalized SKU: 180329UPC Code: 030999873187
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Push Rod/Lifter Cover Gasket 2-pk #18-0328-9
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Sierra Sierra Push Rod/Lifter Cover Gasket 2-pk #18-0328-9 $29.43 $35.13
Sierra 18-0328-9 Engine GasketsPush Rod/Lifter Cover Gasket (Priced Per Pkg of 2)Sierra Push Rod/Lifter Cover Gasket (Priced Per Pkg of 2) #18-0328-9Normalized SKU: 1803289UPC Code: 808282161552
-15% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Base Gasket #18-0333
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Sierra Sierra Powerhead Base Gasket #18-0333 $3.40 $4.00
Sierra 18-0333 Engine GasketsPowerhead Base GasketOEM Interchange:MERCURY MARINE: 27-39401Sierra Powerhead Base Gasket #18-0333Normalized SKU: 180333UPC Code: 030999873224

Frequently Asked Questions

First Choice Marine is an online marine retailer carrying a diverse line of marine parts and accessories and related items from industry-respected and demanded manufacturers and suppliers. Through our diverse distributor network, we are able to access over 150,000 items, including our current site inventory, new products being added, and special order items. If you need it on your boat... we are your one-stop shop!

Yes, we offer FREE Shipping on most orders over $149 to US-48*.

Each product displays a shipping status message, just above the item price. Below is the meaning for each of these codes.

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Below the price of the item, on the product page, there is a message indicating the availability of the product.

The quantity on hand is updated as inventory events happen and matches what we have available. If you have urgent needs and we are close to what you need, contact us, and we can confirm stock.

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If you need to return an item, please follow the guidelines here so we can process a prompt refund and assist you in finding the correct item.

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