-17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7141-9
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Sierra Sierra O-Ring 5-pk #18-7141-9 $10.21 $12.19
Sierra 18-7141-9 O-Rings I.D.: 0.180" or 4.6mm Width: 0.065" or 1.7mm Qty: Pkg. of 5 Normalized SKU: 1871419UPC Code: 808282165208
-17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7142-9
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Sierra Sierra O-Ring 5-pk #18-7142-9 $15.35 $18.32
Sierra 18-7142-9 O-Rings I.D.: 3.940" or 100mm Width: 0.135" or 3.4mm Qty: Pkg. of 5 Normalized SKU: 1871429UPC Code: 808282165215
Sold out -17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7139-9
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Sierra Sierra O-Ring 5-pk #18-7139-9 $12.38 $14.78
Sierra 18-7139-9 O-Rings I.D.: 1.080" or 27.4mm Width: 0.210" or 5.33mm Qty: Pkg. of 5 Normalized SKU: 1871399UPC Code: 808282165185
-17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7137-9
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Sierra Sierra O-Ring 5-pk #18-7137-9 $10.83 $12.93
Sierra 18-7137-9 O-Rings I.D.: 0.320" or 8.1mm Width: 0.155" or 4mm Qty: Pkg. of 5 Normalized SKU: 1871379UPC Code: 808282165161
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7138-9
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Sierra Sierra O-Ring 5-pk #18-7138-9 $1.87 $2.20
Sierra 18-7138-9 O-Rings I.D.: 1.500" or 38.1mm Width: 0.210" or 5.3mm Qty: Pkg. of 5 Normalized SKU: 1871389UPC Code: 808282165178
-15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7135
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Sierra Sierra O-Ring #18-7135 $2.67 $3.14
Sierra 18-7135 O-RingsO-RingOEM Interchange:MERCURY MARINE: 25-35276OMC: 310584VOLVO: 3852089Sierra O-Ring #18-7135Normalized SKU: 187135UPC Code: 030999321480
-17% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7133-9
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Sierra Sierra O-Ring 5-pk #18-7133-9 $16.38 $19.55
Sierra 18-7133-9 O-Rings I.D.: 3.780" or 96mm Width: .135" or 3.4mm Qty: Pkg. of 5 Normalized SKU: 1871339UPC Code: 808282165147
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7129-9
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Sierra Sierra O-Ring 5-pk #18-7129-9 $1.96 $2.30
Sierra 18-7129-9 O-Rings I.D.: 0.970" or 24.6mm Width: 0.065" or 1.7mm Qty: Pkg of 5 Normalized SKU: 1871299UPC Code: 808282165130
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7134-9
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Sierra Sierra O-Ring 5-pk #18-7134-9 $0.75 $0.88
Sierra 18-7134-9 O-Rings I.D.: 0.500" or 12.7mm Width: 0.100" or 2.5mm Package of 5 Normalized SKU: 1871349UPC Code: 808282165154
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7126
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Sierra Sierra O-Ring #18-7126 $0.94 $1.10
Sierra 18-7126 O-RingsO-RingOEM Interchange:OMC: 313340Sierra O-Ring #18-7126Normalized SKU: 187126UPC Code: 030999321411
-16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7127
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Sierra Sierra O-Ring #18-7127 $4.74 $5.58
Sierra 18-7127 O-RingsO-RingOEM Interchange:CHRYSLER FORCE: 25-F84305MERCURY MARINE: 25-F84305OMC: 313446Sierra O-Ring #18-7127Normalized SKU: 187127UPC Code: 808282259617
Sold out -15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7128
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Sierra Sierra O-Ring #18-7128 $4.03 $4.74
Sierra 18-7128 O-RingsO-RingOEM Interchange:OMC: 313754Sierra O-Ring #18-7128Normalized SKU: 187128UPC Code: 808282259624
-15% sale
Sierra O-Ring #18-7125
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Sierra Sierra O-Ring #18-7125 $1.16 $1.36
Sierra 18-7125 O-Rings O-Ring Details: I.D.: 2.300" Width: .103" Sierra O-Ring #18-7125 Normalized SKU: 187125UPC Code: 808282200978
-15% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7123
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Sierra Sierra O-Ring #18-7123 $3.57 $4.20
Sierra 18-7123 O-RingsO-RingOEM Interchange:OMC: 308876Sierra O-Ring #18-7123Normalized SKU: 187123UPC Code: 030999321404
-16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring #18-7121
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Sierra Sierra O-Ring #18-7121 $3.04 $3.58
Sierra 18-7121 O-RingsO-RingOEM Interchange:MERCURY MARINE: 25-35029OMC: 308621Sierra O-Ring #18-7121Normalized SKU: 187121UPC Code: 030999321398
Sold out -17% sale
Sierra O-Ring #18-7122
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Sierra Sierra O-Ring #18-7122 $7.86 $9.38
Sierra 18-7122 O-Rings O-Ring OEM Interchange: OMC Stern Drive 3852308 Volvo Penta 3852308 925095 967344 Sierra O-Ring #18-7122 Normalized SKU: 187122UPC Code: 808282227647
-15% sale
Sierra O-Ring #18-7120
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Sierra Sierra O-Ring #18-7120 $1.28 $1.50
Sierra 18-7120 O-RingsO-RingOEM Interchange:CHRYSLER FORCE: 25-F498618MERCURY MARINE: 25-38933OMC: 307853OMC: 332598Sierra O-Ring #18-7120Normalized SKU: 187120UPC Code: 808282259600
Sold out -16% sale
Sierra O-Ring #18-7124
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Sierra Sierra O-Ring #18-7124 $1.17 $1.38
Sierra 18-7124 O-Rings O-Ring Details: I.D.: 2.500" Width: 0.103" Sierra O-Ring #18-7124 Normalized SKU: 187124UPC Code: 808282200961
Sold out -15% sale
Sierra O-Ring #18-7119
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Sierra Sierra O-Ring #18-7119 $1.14 $1.34
Sierra 18-7119 O-Rings O-Ring OEM Interchange: Yamaha Outboard 93210-33M49-00 93210-33M85-00 Sierra O-Ring #18-7119 Normalized SKU: 187119UPC Code: 808282200954
Sold out -16% sale
Sierra Not Qualified for Free Shipping Sierra O-Ring 5-pk #18-7118-9
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Sierra Sierra O-Ring 5-pk #18-7118-9 $5.93 $6.98
Sierra 18-7118-9 O-RingsO-Ring (Priced Per Pkg of 5)Sierra O-Ring (Priced Per Pkg of 5) #18-7118-9Normalized SKU: 1871189UPC Code: 808282165123

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.

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