00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7153
$2.18
$2.56
Sierra 18-7153 O-RingsSierra O-Ring #18-7153OEM Interchange:MERCURY MARINE: 25-21836OMC: 3852565OMC: 911851Sierra O-Ring #18-7153Normalized SKU: 187153UPC Code: 808282259679
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7154
$2.09
$2.46
Sierra 18-7154 O-Rings
O-Ring
OEM Interchange:
Volvo Penta
191058
925059
949656
Sierra O-Ring #18-7154
Normalized SKU: 187154UPC Code: 808282227630
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7155
$2.84
$3.34
Sierra 18-7155 O-RingsSierra O-Ring #18-7155OEM Interchange:MERCURY MARINE: 25-26855OMC: 305270Sierra O-Ring #18-7155Normalized SKU: 187155UPC Code: 030999321671
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7156
$2.48
$2.92
Sierra 18-7156 O-RingsSierra O-Ring #18-7156OEM Interchange:MERCURY MARINE: 25-29439OMC: 309731Sierra O-Ring #18-7156Normalized SKU: 187156UPC Code: 030999321688
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7157
$5.10
$6.00
Sierra 18-7157 O-RingsSierra O-Ring #18-7157OEM Interchange:MERCURY MARINE: 25-29976Sierra O-Ring #18-7157Normalized SKU: 187157UPC Code: 808282259686
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7158
$0.29
$0.34
Sierra 18-7158 O-RingsSierra O-Ring #18-7158OEM Interchange:MERCURY MARINE: 25-30613OMC: 310585OMC: 310967Sierra O-Ring #18-7158Normalized SKU: 187158UPC Code: 808282259693
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7159
$4.42
$5.20
Sierra 18-7159 O-RingsSierra O-Ring #18-7159OEM Interchange:MERCURY MARINE: 25-31534Sierra O-Ring #18-7159Normalized SKU: 187159UPC Code: 808282259709
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7160
$0.87
$1.02
Sierra 18-7160 O-RingsSierra O-Ring #18-7160OEM Interchange:MERCURY MARINE: 25-31986Sierra O-Ring #18-7160Normalized SKU: 187160UPC Code: 030999321725
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7161
$0.58
$0.68
Sierra 18-7161 O-Rings
I.D.: 3.250" or 82.6mm
Width: 0.070" or 1.8mm
Sold each
OEM Interchange:MERCURY MARINE: 25-32546
Normalized SKU: 187161UPC Code: 808282259716
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7162
$2.33
$2.74
Sierra 18-7162 O-RingsSierra O-Ring #18-7162OEM Interchange:MERCURY MARINE: 25-33145OMC: 302337VOLVO: 3852044Sierra O-Ring #18-7162Normalized SKU: 187162UPC Code: 030999321749
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7163
$3.15
$3.70
Sierra 18-7163 O-RingsSierra O-Ring #18-7163OEM Interchange:MERCURY MARINE: 25-33465Sierra O-Ring #18-7163Normalized SKU: 187163UPC Code: 030999321756
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7164
$0.34
$0.40
Sierra 18-7164 O-RingsSierra O-Ring #18-7164OEM Interchange:MERCURY MARINE: 25-33466OMC: 302537Sierra O-Ring #18-7164Normalized SKU: 187164UPC Code: 030999321763
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7165
$1.28
$1.50
Sierra 18-7165 O-RingsSierra O-Ring #18-7165OEM Interchange:MERCURY MARINE: 25-32509MERCURY MARINE: 25-45253OMC: 304174Sierra O-Ring #18-7165Normalized SKU: 187165UPC Code: 808282259723
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7166
$1.34
$1.58
Sierra 18-7166 O-RingsSierra O-Ring #18-7166OEM Interchange:MERCURY MARINE: 25-45254Sierra O-Ring #18-7166Normalized SKU: 187166UPC Code: 030999321787
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7167
$3.86
$4.54
Sierra 18-7167 O-RingsSierra O-Ring #18-7167OEM Interchange:MERCURY MARINE: 25-97386OMC: 310414Sierra O-Ring #18-7167Normalized SKU: 187167UPC Code: 030999321794
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7168
$1.14
$1.34
Sierra 18-7168 O-RingsSierra O-Ring #18-7168OEM Interchange:MERCURY MARINE: 25-48171OMC: 202893VOLVO: 3852033Sierra O-Ring #18-7168Normalized SKU: 187168UPC Code: 808282259730
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7169
$3.45
$4.06
Sierra 18-7169 O-RingsSierra O-Ring #18-7169OEM Interchange:CHRYSLER FORCE: 25-F24278MERCURY MARINE: 25-70937OMC: 911686Sierra O-Ring #18-7169Normalized SKU: 187169UPC Code: 808282259747
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7170
$1.94
$2.28
Sierra 18-7170 O-RingsSierra O-Ring #18-7170OEM Interchange:MERCURY MARINE: 25-33504OMC: 307239Sierra O-Ring #18-7170Normalized SKU: 187170UPC Code: 030999321824
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7171
$2.33
$2.74
Sierra 18-7171 O-RingsSierra O-Ring #18-7171OEM Interchange:MERCURY MARINE: 25-30529Sierra O-Ring #18-7171Normalized SKU: 187171UPC Code: 030999321831
00
DAYS 00
HRS 00
MIN 00
SEC
DAYS 00
HRS 00
MIN 00
SEC
Sierra
Sierra O-Ring #18-7172
$5.07
$5.96
Sierra 18-7172 O-RingsSierra O-Ring #18-7172OEM Interchange:MERCURY MARINE: 25-31305OMC: 553126Sierra O-Ring #18-7172Normalized SKU: 187172UPC Code: 030999321848
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.Secure Shopping
Fast, secure checkout with a variety of payment methods.Shop with confidence
25+ years serving the marine industry.Support center
Need help? Contact us via live chat, phone, or email.