-22% sale
Sierra Not Qualified for Free Shipping Sierra Head Gasket Set #18-1266
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Sierra Sierra Head Gasket Set #18-1266 $287.74 $365.45
Sierra 18-1266 Engine GasketsHead Gasket SetSierra Head Gasket Set #18-1266Normalized SKU: 181266UPC Code: 808282233655
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Valve GrIndustrial Gasket Set #18-1258
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Sierra Sierra Valve GrIndustrial Gasket Set #18-1258 $470.54 $587.29
Sierra 18-1258 Engine GasketsValve Grind Gasket SetSierra Valve GrIndustrial Gasket Set #18-1258Normalized SKU: 181258UPC Code: 808282257507
-20% sale
Sierra Not Qualified for Free Shipping Sierra Valve GrIndustrial Gasket Set #18-1257
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Sierra Sierra Valve GrIndustrial Gasket Set #18-1257 $113.87 $141.35
Sierra 18-1257 Engine GasketsValve Grind Gasket SetSierra Valve GrIndustrial Gasket Set #18-1257Normalized SKU: 181257UPC Code: 808282239411
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Short Block Gasket Set #18-1256
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Sierra Sierra Short Block Gasket Set #18-1256 $103.34 $128.29
Sierra 18-1256 Engine GasketsShort Block Gasket SetSierra Short Block Gasket Set #18-1256Normalized SKU: 181256UPC Code: 808282233952
Sold out -20% sale
Sierra Head Gasket Set #18-1259
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Sierra Sierra Head Gasket Set #18-1259 $376.55 $469.98
Sierra 18-1259 Engine GasketsHead Gasket SetSierra Head Gasket Set #18-1259Normalized SKU: 181259UPC Code: 808282257514
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Head Gasket Set #18-1255
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Sierra Sierra Head Gasket Set #18-1255 $47.34 $56.81
Sierra 18-1255 Engine GasketsHead Gasket SetSierra Head Gasket Set #18-1255Normalized SKU: 181255UPC Code: 808282257491
-17% sale
Sierra Not Qualified for Free Shipping Sierra Outdrive Seal #18-1240
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Sierra Sierra Outdrive Seal #18-1240 $12.40 $14.80
Sierra 18-1240 Engine GasketsOutdrive SealOEM Interchange:MERCURY MARINE: 12708Sierra Outdrive Seal #18-1240Normalized SKU: 181240UPC Code: 030999752390
-20% sale
Sierra Not Qualified for Free Shipping Sierra Oil Pan Gasket #18-1239
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Sierra Sierra Oil Pan Gasket #18-1239 $127.14 $157.82
Sierra 18-1239 Engine GasketsOil Pan GasketOEM Interchange:MERCURY MARINE: 27-810846TOMC: 914820VOLVO: 3853343Sierra Oil Pan Gasket #18-1239Normalized SKU: 181239UPC Code: 808282242954
-17% sale
Sierra Not Qualified for Free Shipping Sierra Intake Gasket Set #18-1238
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Sierra Sierra Intake Gasket Set #18-1238 $47.64 $57.17
Sierra 18-1238 Engine GasketsIntake Gasket SetOEM Interchange:MERCURY MARINE: 24-824326OMC: 3850379OMC: 912979VOLVO: 3850379VOLVO: 912979Sierra Intake Gasket Set #18-1238Normalized SKU: 181238UPC Code: 808282239930
-15% sale
Sierra Not Qualified for Free Shipping Sierra Float Bowl and Nozzle Gasket #18-1241
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Sierra Sierra Float Bowl and Nozzle Gasket #18-1241 $6.60 $7.76
Sierra 18-1241 Engine GasketsFloat Bowl and Nozzle GasketSierra Float Bowl and Nozzle Gasket #18-1241Normalized SKU: 181241UPC Code: 030999874887
-17% sale
Sierra Not Qualified for Free Shipping Sierra One Piece Rear Main Seal #18-1234
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Sierra Sierra One Piece Rear Main Seal #18-1234 $67.98 $81.58
Sierra 18-1234 Engine GasketsOne Piece Rear Main SealOEM Interchange:CRUSADER: 7080030MERCURY MARINE: 26-811554OMC: 3853528VOLVO: 3853528Gaskets: Rear Main SealSierra One Piece Rear Main Seal #18-1234Normalized SKU: 181234UPC Code: 808282242947
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Oil Pan Gasket #18-1232
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Sierra Sierra Oil Pan Gasket #18-1232 $65.99 $79.18
Sierra 18-1232 Engine GasketsOil Pan GasketOEM Interchange:CRUSADER: 7090000MERCURY MARINE: 27-811566OMC: 3853510VOLVO: 3853510Sierra Oil Pan Gasket #18-1232Normalized SKU: 181232UPC Code: 808282257484
-17% sale
Sierra Not Qualified for Free Shipping Sierra Intake Gasket #18-1231
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Sierra Sierra Intake Gasket #18-1231 $59.87 $71.84
Sierra 18-1231 Engine GasketsIntake GasketOEM Interchange:MERCURY MARINE: 27-818188-1OMC: 3854095VOLVO: 3854095Sierra Intake Gasket #18-1231Normalized SKU: 181231UPC Code: 808282242923
Sold out -15% sale
Sierra Qualifies for Free Shipping Sierra Exhaust Manifold Gasket #18-1228
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Sierra Sierra Exhaust Manifold Gasket #18-1228 $3.20 $3.76
Sierra 18-1228 Engine GasketsExhaust Manifold GasketOEM Interchange:OMC: 311364Sierra Exhaust Manifold Gasket #18-1228Normalized SKU: 181228UPC Code: 030999874863
-17% sale
Sierra Not Qualified for Free Shipping Sierra Timing Cover Seal #18-1233
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Sierra Sierra Timing Cover Seal #18-1233 $31.40 $37.48
Sierra 18-1233 Engine GasketsTiming Cover SealOEM Interchange:CRUSADER: 7080130MERCURY MARINE: 26-8219471OMC: 3860095Gaskets: Timing Cover SealsSierra Timing Cover Seal #18-1233Normalized SKU: 181233UPC Code: 808282242930
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra Retainer Gasket 2-pk #18-1221-9
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Sierra Sierra Retainer Gasket 2-pk #18-1221-9 $2.74 $3.22
Sierra 18-1221-9 Engine GasketsRetainer Gasket (Priced Per Pkg of 2)Sierra Retainer Gasket (Priced Per Pkg of 2) #18-1221-9Normalized SKU: 1812219UPC Code: 808282162368
-15% sale
Sierra Not Qualified for Free Shipping Sierra Exhaust Cover Gasket #18-1224
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Sierra Sierra Exhaust Cover Gasket #18-1224 $5.19 $6.10
Sierra 18-1224 Engine GasketsExhaust Cover GasketOEM Interchange:OMC: 315869Sierra Exhaust Cover Gasket #18-1224Normalized SKU: 181224UPC Code: 030999752383
-16% sale
Sierra Not Qualified for Free Shipping Sierra Exhaust Cover Gasket #18-1218
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Sierra Sierra Exhaust Cover Gasket #18-1218 $5.03 $5.92
Sierra 18-1218 Engine GasketsExhaust Cover GasketOEM Interchange:OMC: 315868Sierra Exhaust Cover Gasket #18-1218Normalized SKU: 181218UPC Code: 030999752345
-17% sale
Sierra Not Qualified for Free Shipping Sierra Timing Cover Seal #18-1213
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Sierra Sierra Timing Cover Seal #18-1213 $37.82 $45.14
Sierra 18-1213 Engine GasketsTiming Cover SealOEM Interchange:CRUSADER: 7080310MERCURY MARINE: 26-59341MERCURY MARINE: 26-79223MERCURY MARINE: 26-97335OMC: 3853341OMC: 912989OMC: 914817VOLVO: 3853341Gaskets: Timing Cover SealsSierra Timing Cover Seal #18-1213Normalized SKU: 181213UPC Code: 808282242916
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra Grommet Gasket #18-1219
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Sierra Sierra Grommet Gasket #18-1219 $1.09 $1.28
Sierra 18-1219 Engine GasketsGrommet GasketOEM Interchange:OMC: 320880Sierra Grommet Gasket #18-1219Normalized SKU: 181219UPC Code: 030999752352

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.

  • Qualifies for Free Shipping: This item qualifies for free shipping when the order is $149+
  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
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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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