Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4313
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Sierra Sierra Powerhead Gasket Set #18-4313 $11.01 $13.14
Sierra 18-4313 Engine GasketsPowerhead Gasket SetSierra Powerhead Gasket Set #18-4313Normalized SKU: 184313UPC Code: 030999563255
-17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4312
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Sierra Sierra Powerhead Gasket Set #18-4312 $50.93 $61.11
Sierra 18-4312 Engine GasketsPowerhead Gasket SetSierra Powerhead Gasket Set #18-4312Normalized SKU: 184312UPC Code: 030999563248
-20% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4307
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Sierra Sierra Powerhead Gasket Set #18-4307 $74.04 $91.91
Sierra 18-4307 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 392567OMC: 392615OMC: 433941Sierra Powerhead Gasket Set #18-4307Normalized SKU: 184307UPC Code: 808282259198
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4309
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Sierra Sierra Powerhead Gasket Set #18-4309 $83.75 $103.97
Sierra 18-4309 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 394885OMC: 434381Sierra Powerhead Gasket Set #18-4309Normalized SKU: 184309UPC Code: 030999318015
-17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4310
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Sierra Sierra Powerhead Gasket Set #18-4310 $57.98 $69.57
Sierra 18-4310 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 396750Sierra Powerhead Gasket Set #18-4310Normalized SKU: 184310UPC Code: 030999318022
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4305
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Sierra Sierra Powerhead Gasket Set #18-4305 $111.17 $138.01
Sierra 18-4305 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 393433Sierra Powerhead Gasket Set #18-4305Normalized SKU: 184305UPC Code: 808282259174
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4306
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Sierra Sierra Powerhead Gasket Set #18-4306 $32.60 $38.91
Sierra 18-4306 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 394546Sierra Powerhead Gasket Set #18-4306Normalized SKU: 184306UPC Code: 808282259181
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4304-1
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Sierra Sierra Powerhead Gasket Set #18-4304-1 $121.16 $150.41
Sierra 18-4304-1 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 391988Sierra Powerhead Gasket Set #18-4304-1Normalized SKU: 1843041UPC Code: 808282244293
Sold out -20% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4302
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Sierra Sierra Powerhead Gasket Set #18-4302 $100.92 $125.28
Sierra 18-4302 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 390078Sierra Powerhead Gasket Set #18-4302Normalized SKU: 184302UPC Code: 808282259150
-22% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4303-1
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Sierra Sierra Powerhead Gasket Set #18-4303-1 $145.00 $184.16
Sierra 18-4303-1 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 389556OMC: 391300Sierra Powerhead Gasket Set #18-4303-1Normalized SKU: 1843031UPC Code: 808282259167
-17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4300
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Sierra Sierra Powerhead Gasket Set #18-4300 $43.58 $52.29
Sierra 18-4300 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 385416Sierra Powerhead Gasket Set #18-4300Normalized SKU: 184300UPC Code: 030999317926
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Powerhead Gasket Set #18-4301
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Sierra Sierra Powerhead Gasket Set #18-4301 $49.88 $59.85
Sierra 18-4301 Engine GasketsPowerhead Gasket SetOEM Interchange:OMC: 388602Sierra Powerhead Gasket Set #18-4301Normalized SKU: 184301UPC Code: 030999317933
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Valve Stem Seal 8-pk #18-4024-9
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Sierra Sierra Valve Stem Seal 8-pk #18-4024-9 $19.65 $23.46
Sierra 18-4024-9 Engine GasketsValve Stem Seal (Priced Per Pkg of 8)Gaskets: Valve Stem SealsSierra Valve Stem Seal (Priced Per Pkg of 8) #18-4024-9Normalized SKU: 1840249UPC Code: 808282166557
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra Valve Stem Seal #18-4031
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Sierra Sierra Valve Stem Seal #18-4031 $2.45 $2.88
Sierra 18-4031 Engine GasketsValve Stem SealOEM Interchange:VOLVO: 1306630Gaskets: Valve Stem SealsSierra Valve Stem Seal #18-4031Normalized SKU: 184031UPC Code: 030999317162
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra Valve Stem Seal #18-4022
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Sierra Sierra Valve Stem Seal #18-4022 $0.22 $0.26
Sierra 18-4022 Engine GasketsValve Stem SealOEM Interchange:MERCURY MARINE: 26-75988Gaskets: Valve Stem SealsSierra Valve Stem Seal #18-4022Normalized SKU: 184022UPC Code: 808282244163
-16% sale
Sierra Not Qualified for Free Shipping Sierra Valve Stem Seal #18-4023
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Sierra Sierra Valve Stem Seal #18-4023 $2.48 $2.92
Sierra 18-4023 Engine GasketsValve Stem SealOEM Interchange:MERCURY MARINE: 26-75413Gaskets: Valve Stem SealsSierra Valve Stem Seal #18-4023Normalized SKU: 184023UPC Code: 808282244170
-17% sale
Sierra Not Qualified for Free Shipping Sierra Head Gasket #18-3896
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Sierra Sierra Head Gasket #18-3896 $11.39 $13.60
Sierra 18-3896 Engine GasketsHead GasketOEM Interchange:OMC: 332817Sierra Head Gasket #18-3896Normalized SKU: 183896UPC Code: 030999755926
-17% sale
Sierra Not Qualified for Free Shipping Sierra Head Gasket #18-3895
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Sierra Sierra Head Gasket #18-3895 $12.85 $15.34
Sierra 18-3895 Engine GasketsHead GasketOEM Interchange:OMC: 332816Sierra Head Gasket #18-3895Normalized SKU: 183895UPC Code: 808282258979
-17% sale
Sierra Not Qualified for Free Shipping Sierra Head Gasket #18-3898
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Sierra Sierra Head Gasket #18-3898 $10.70 $12.77
Sierra 18-3898 Engine GasketsHead GasketOEM Interchange:OMC: 332819Sierra Head Gasket #18-3898Normalized SKU: 183898UPC Code: 808282258986
-17% sale
Sierra Not Qualified for Free Shipping Sierra Gasket Set #18-3893
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Sierra Sierra Gasket Set #18-3893 $47.03 $56.43
Sierra 18-3893 Engine GasketsGasket SetSierra Gasket Set #18-3893Normalized SKU: 183893UPC Code: 808282188740

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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  • Qualifies for Free Ground Shipping: This item qualifies for free ground shipping when the order is $149+.
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  • In-Store Pickup Only: This item can only be picked up in our Grain Valley, MO retail store

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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