-17% sale
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Sierra Sierra O-Ring 5-pk #18-7414-9 $10.01 $11.95
Sierra 18-7414-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7414-9Normalized SKU: 1874149UPC Code: 808282165925
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7411-9
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Sierra Sierra O-Ring 5-pk #18-7411-9 $8.51 $10.16
Sierra 18-7411-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7411-9Normalized SKU: 1874119UPC Code: 808282165895
Sold out -17% sale
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Sierra Sierra O-Ring 5-pk #18-7415-9 $22.54 $26.90
Sierra 18-7415-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7415-9Normalized SKU: 1874159UPC Code: 808282165932
Sold out -15% sale
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Sierra Sierra O-Ring 5-pk #18-7409-9 $7.43 $8.74
Sierra 18-7409-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7409-9Normalized SKU: 1874099UPC Code: 808282165888
Sold out -20% sale
Sierra O-Ring #18-7410
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Sierra Sierra O-Ring #18-7410 $104.40 $129.60
Sierra 18-7410 O-RingsO-RingOEM Interchange:MERCURY MARINE: 25-36390Sierra O-Ring #18-7410Normalized SKU: 187410UPC Code: 030999876065
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7403-9
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Sierra Sierra O-Ring 5-pk #18-7403-9 $0.88 $1.04
Sierra 18-7403-9 O-Rings I.D.: 1.500" or 38.1mm Width: 0.100" or 2.5mm Package of 5 Normalized SKU: 1874039UPC Code: 808282165833
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7406-9
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Sierra Sierra O-Ring 5-pk #18-7406-9 $1.12 $1.32
Sierra 18-7406-9 O-Rings I.D.: 0.250" or 6.4mm Width: 0.065" or 1.7mm Package of 5 Normalized SKU: 1874069UPC Code: 808282165857
Sold out -17% sale
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Sierra Sierra O-Ring 5-pk #18-7407-9 $37.85 $45.18
Sierra 18-7407-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7407-9Normalized SKU: 1874079UPC Code: 808282165864
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7404-9
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Sierra Sierra O-Ring 5-pk #18-7404-9 $7.95 $9.49
Sierra 18-7404-9 O-Rings I.D.: 0.300" or 7.6mm Width: 0.100" or 2.5mm Package of 5 Normalized SKU: 1874049UPC Code: 808282165840
Sold out -25% sale
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Sierra Sierra O-Ring 5-pk #18-7408-9 $0.03 $0.04
Sierra 18-7408-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7408-9Normalized SKU: 1874089UPC Code: 808282165871
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7401-9
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Sierra Sierra O-Ring 5-pk #18-7401-9 $0.92 $1.08
Sierra 18-7401-9 O-Rings I.D.: 2.485" or 63mm Width: 0.100" or 2.5mm Package of 5 Normalized SKU: 1874019UPC Code: 808282165826
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7198-9
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Sierra Sierra O-Ring 5-pk #18-7198-9 $1.00 $1.18
Sierra 18-7198-9 O-Rings I.D.: 1.430" or 36.3mm Width: 0.100" or 2.54mm Package of 5 Normalized SKU: 1871989UPC Code: 808282165758
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7194-9
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Sierra Sierra O-Ring 5-pk #18-7194-9 $33.12 $39.53
Sierra 18-7194-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7194-9Normalized SKU: 1871949UPC Code: 808282165710
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7193-9
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Sierra Sierra O-Ring 5-pk #18-7193-9 $12.38 $14.78
Sierra 18-7193-9 O-Rings I.D.: 10.300 mm Width: 2.400 mm Package of 5 Normalized SKU: 1871939UPC Code: 808282165703
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7187-9
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Sierra Sierra O-Ring 5-pk #18-7187-9 $17.47 $20.85
Sierra 18-7187-9 O-Rings I.D.: 106.000 mm Width: 3.000 mm Package of 5 Normalized SKU: 1871879UPC Code: 808282165659
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7188-9
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Sierra Sierra O-Ring 5-pk #18-7188-9 $8.51 $10.16
Sierra 18-7188-9 O-Rings I.D.: 0.361" or 9.1mm Width: 0.064" or 1.6mm Package of 5 Normalized SKU: 1871889UPC Code: 808282165666
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7190-9
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Sierra Sierra O-Ring 5-pk #18-7190-9 $3.30 $3.88
Sierra 18-7190-9 O-Rings I.D.: 34.000 mm Width: 3.000 mm Package of 5 Normalized SKU: 1871909UPC Code: 808282165673
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7192-9
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Sierra Sierra O-Ring 5-pk #18-7192-9 $1.67 $1.96
Sierra 18-7192-9 O-Rings I.D.: 25.100 mm Width: 1.600 mm Package of 5 Normalized SKU: 1871929UPC Code: 808282165697
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7183-9
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Sierra Sierra O-Ring 5-pk #18-7183-9 $12.38 $14.78
Sierra 18-7183-9 O-Rings I.D.: 69.500 mm Width: 3.000 mm Package of 5 Normalized SKU: 1871839UPC Code: 808282165611
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7186-9
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Sierra Sierra O-Ring 5-pk #18-7186-9 $21.16 $25.25
Sierra 18-7186-9 O-Rings I.D.: 102.000 mm Width: 3.000 mm Package of 5s Normalized SKU: 1871869UPC Code: 808282165642

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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  • 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.

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