Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7140
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Sierra Sierra O-Ring #18-7140 $3.37 $3.96
Sierra 18-7140 O-RingsSierra O-Ring #18-7140OEM Interchange:OMC: 320303SUZUKI: 09280-75002Sierra O-Ring #18-7140Normalized SKU: 187140UPC Code: 030999321534
-15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7134
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Sierra Sierra O-Ring #18-7134 $1.77 $2.08
Sierra 18-7134 O-RingsSierra O-Ring #18-7134OEM Interchange:CHRYSLER FORCE: 25-F40342MERCURY MARINE: 25-F40342OMC: 303059Sierra O-Ring #18-7134Normalized SKU: 187134UPC Code: 030999321473
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7138
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Sierra Sierra O-Ring #18-7138 $2.99 $3.52
Sierra 18-7138 O-RingsSierra O-Ring #18-7138OEM Interchange:OMC: 318717Sierra O-Ring #18-7138Normalized SKU: 187138UPC Code: 030999321510
-16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7137
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Sierra Sierra O-Ring #18-7137 $2.43 $2.86
Sierra 18-7137 O-RingsSierra O-Ring #18-7137OEM Interchange:OMC: 318372Sierra O-Ring #18-7137Normalized SKU: 187137UPC Code: 808282259648
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7139
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Sierra Sierra O-Ring #18-7139 $0.41 $0.48
Sierra 18-7139 O-RingsSierra O-Ring #18-7139OEM Interchange:OMC: 319085Sierra O-Ring #18-7139Normalized SKU: 187139UPC Code: 030999321527
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7129
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Sierra Sierra O-Ring #18-7129 $2.26 $2.66
Sierra 18-7129 O-RingsSierra O-Ring #18-7129OEM Interchange:OMC: 314491Sierra O-Ring #18-7129Normalized SKU: 187129UPC Code: 030999321442
-15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7133
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Sierra Sierra O-Ring #18-7133 $2.74 $3.22
Sierra 18-7133 O-RingsSierra O-Ring #18-7133OEM Interchange:OMC: 305123OMC: 322119Sierra O-Ring #18-7133Normalized SKU: 187133UPC Code: 808282259631
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7114
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Sierra Sierra O-Ring #18-7114 $1.73 $2.04
Sierra 18-7114 O-RingsSierra O-Ring #18-7114OEM Interchange:MERCURY MARINE: 25-23145OMC: 302540Sierra O-Ring #18-7114Normalized SKU: 187114UPC Code: 030999321336
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7109
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Sierra Sierra O-Ring #18-7109 $1.72 $2.02
Sierra 18-7109 O-RingsSierra O-Ring #18-7109OEM Interchange:OMC: 317178Sierra O-Ring #18-7109Normalized SKU: 187109UPC Code: 808282259587
Sold out -20% sale
Sierra O-Ring #18-7118
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Sierra Sierra O-Ring #18-7118 $91.35 $113.40
Sierra 18-7118 O-RingsSierra O-Ring #18-7118OEM Interchange:OMC: 305242SUZUKI: 09280-08008Sierra O-Ring #18-7118Normalized SKU: 187118UPC Code: 030999321374
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7107
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Sierra Sierra O-Ring #18-7107 $3.11 $3.66
Sierra 18-7107 O-RingsSierra O-Ring #18-7107OEM Interchange:MERCURY MARINE: 25-67202OMC: 313175Sierra O-Ring #18-7107Normalized SKU: 187107UPC Code: 030999321282
-16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7108
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Sierra Sierra O-Ring #18-7108 $1.41 $1.66
Sierra 18-7108 O-RingsSierra O-Ring #18-7108OEM Interchange:OMC: 313893OMC: 338518Sierra O-Ring #18-7108Normalized SKU: 187108UPC Code: 030999321299
Sold out -16% sale
Sierra O-Ring #18-7105
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Sierra Sierra O-Ring #18-7105 $1.12 $1.32
Sierra 18-7105 O-RingsSierra O-Ring #18-7105OEM Interchange:MERCURY MARINE: 25-62705OMC: 311338Sierra O-Ring #18-7105Normalized SKU: 187105UPC Code: 030999321268
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7104
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Sierra Sierra O-Ring #18-7104 $1.41 $1.66
Sierra 18-7104 O-RingsSierra O-Ring #18-7104OEM Interchange:OMC: 308627Sierra O-Ring #18-7104Normalized SKU: 187104UPC Code: 030999321251
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7103
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Sierra Sierra O-Ring #18-7103 $3.49 $4.10
Sierra 18-7103 O-RingsSierra O-Ring #18-7103OEM Interchange:MERCURY MARINE: 25-29845OMC: 308624Sierra O-Ring #18-7103Normalized SKU: 187103UPC Code: 030999321244
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7101
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Sierra Sierra O-Ring #18-7101 $0.32 $0.38
Sierra 18-7101 O-RingsSierra O-Ring #18-7101OEM Interchange:OMC: 305739Sierra O-Ring #18-7101Normalized SKU: 187101UPC Code: 030999321220
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7102
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Sierra Sierra O-Ring #18-7102 $1.85 $2.18
Sierra 18-7102 O-RingsSierra O-Ring #18-7102OEM Interchange:MERCURY MARINE: 25-62706OMC: 307450VOLVO: 3852073Sierra O-Ring #18-7102Normalized SKU: 187102UPC Code: 030999321237
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7100
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Sierra Sierra O-Ring #18-7100 $0.36 $0.42
Sierra 18-7100 O-RingsSierra O-Ring #18-7100OEM Interchange:CHRYSLER FORCE: 25-85594MERCURY MARINE: 25-85594OMC: 301877Sierra O-Ring #18-7100Normalized SKU: 187100UPC Code: 808282259563
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra Service Valve with O-ring #18-0871
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Sierra Sierra Service Valve with O-ring #18-0871 $8.03 $9.58
Sierra 18-0871 O-RingsSierra Service Valve with O-ring #18-0871OEM Interchange:OMC: 175158Sierra Service Valve with O-ring #18-0871Normalized SKU: 180871UPC Code: 808282227746
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-0860
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Sierra Sierra O-Ring #18-0860 $3.09 $3.64
Sierra 18-0860 O-RingsSierra O-Ring #18-0860OEM Interchange:MERCURY MARINE: 25-62700Sierra O-Ring #18-0860Normalized SKU: 180860UPC Code: 030999751515

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+.
  • Oversized - Not Qualified for Free Shipping: This item is too large/heavy to qualify for free shipping
  • Hazardous Item - Not Qualified for Free Shipping: This item is hazardous and does not qualify for free shipping
  • Truck Freight - Not Qualified for Free Shipping: This item has to be shipped via truck freight. Please contact us for a quote
  • 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.

We offer a hassle-free return policy. If you're not completely satisfied with your purchase, you can return it within 30 days for a full refund or exchange.

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.

Free Shipping

On most orders $149+ to the continental 48 US states.

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25+ years serving the marine industry.

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