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Our Price: $25.99 Standard Bore Inline Piston Rings - Sierra
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Part # 18-3900
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Our Price: $25.99 2 Ring Standard Bore Inline Piston Ring - Sierra
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Part # 18-3903
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Our Price: $25.99 2 Ring Standard Bore Inline Piston Ring - Sierra
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Part # 18-3918
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Our Price: $19.99 2 Ring Standard Bore Inline Piston Rings - Sierra
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Part # 18-3966
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Our Price: $19.99 2 Ring Standard Bore Inline Piston Rings - Sierra
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Part # 18-3979
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Our Price: $27.99 Standard Bore Piston Rings - Sierra
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Part # 18-3982
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Our Price: $25.99 2 Ring Standard Bore Inline Piston Rings - Sierra
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Part # 18-4019
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Our Price: $24.99 Mallory Ring Set Std. 9-54229
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Part # 9-54229
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Our Price: $24.99 (Out of stock) Mallory Ring Set Std. 9-54225
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Part # 9-54225
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Our Price: $47.99 Mallory Ring Set Std. 9-54208
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Part # 9-54208
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Our Price: $33.99 Mallory Ring Set Std. 9-54200
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Part # 9-54200
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Our Price: $25.99 .015 OS Bore Inline Piston Ring - Sierra
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Part # 18-3919
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Our Price: $19.99 .015 OS Bore Inline Piston Rings - Sierra
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Part # 18-3967
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Our Price: $14.99 .015 OS Bore Inline Piston Rings - Sierra
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Part # 18-3980
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Our Price: $21.99 .015 OS Bore Inline Piston Rings - Sierra
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Part # 18-3983
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Our Price: $19.99 2 Ring .015 OS Bore Inline Piston Rings - Sierra
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Part # 18-4020
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Our Price: $25.99 2 Ring .030 OS Bore Inline Piston Rings - Sierra
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Part # 18-3920
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Our Price: $26.99 2 Ring .030 OS Bore Inline Piston Rings - Sierra
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Part # 18-3968
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Our Price: $14.99 .030 OS Bore Inline Piston Rings, 2 - Sierra
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Part # 18-3981
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Our Price: $21.99 2 Ring .030 OS Bore Inline Piston Rings - Sierra
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Part # 18-3984
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Our Price: $19.99 .030 OS Bore Inline Piston Rings, 2 - Sierra
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Part # 18-4021
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Our Price: $24.99 (Out of stock) Mallory Ring Set .030 9-54231
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Part # 9-54231
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Our Price: $47.99 (Out of stock) Mallory Ring Set .030 9-54210
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Part # 9-54210
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Our Price: $33.99 (Out of stock) Mallory Ring Set .030 9-54202
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Part # 9-54202
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Our Price: $16.99 3 Ring Standard Bore Inline Piston Ring - Sierra
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Part # 18-3902
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Our Price: $23.99 Mallory Ring Set Std. 9-54217
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Part # 9-54217
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Our Price: $12.99 3 Ring .015 OS Bore Inline Piston Rings - Sierra
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Part # 18-3916
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Our Price: $23.99 Mallory Ring Set .030 9-54219
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Part # 9-54219
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Our Price: $12.99 3 Ring .030 OS Bore Inline Piston Rings - Sierra
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Part # 18-3917
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Sierra
mercury marine 39-21665a12 replacement parts
Standard Bore Inline Piston Rings - Sierra
Part # 18-3900
Replaces OEM part #
  • MERCURY MARINE 39-21665A12


sierra 18-3903 piston ring
2 Ring Standard Bore Inline Piston Ring - Sierra
Part # 18-3903
Replaces OEM part #
  • MERCURY MARINE 39-27841A12


glm 14210 replacement parts
2 Ring Standard Bore Inline Piston Ring - Sierra
Part # 18-3918
Replaces OEM part #
  • MERCURY MARINE 39-817096A6


mercury 2 ring standard bore inline piston rings-sierra 18-3966
2 Ring Standard Bore Inline Piston Rings - Sierra
Part # 18-3966
Replaces OEM part #
  • MERCURY MARINE 39-18653A12


glm 14910 replacement parts
2 Ring Standard Bore Inline Piston Rings - Sierra
Part # 18-3979
Replaces OEM part #
  • MERCURY MARINE 39-96170A12


glm 14940 replacement parts
Standard Bore Piston Rings - Sierra
Part # 18-3982
Replaces OEM part #
  • MERCURY MARINE 39-822321A12
  • MERCURY MARINE 39-822321A12


mercury 2 ring standard bore inline piston rings-sierra 18-4019
2 Ring Standard Bore Inline Piston Rings - Sierra
Part # 18-4019
Replaces OEM part #
  • MERCURY MARINE 39-19721A6


 
Mallory Ring Set Std. 9-54229
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-96170A12
Fits Application:3.375 Bore

 
Mallory Ring Set Std. 9-54225
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-822321A12
Fits Application:3.5 Bore

 
Mallory Ring Set Std. 9-54208
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-19721A6
Fits Application:50-60HP

 
Mallory Ring Set Std. 9-54200
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-18653A12
Fits Application:2.565" Bore

mercury marine 39-817096a16 replacement parts
.015 OS Bore Inline Piston Ring - Sierra
Part # 18-3919
Replaces OEM part #
  • MERCURY MARINE 39-817096A16


mercury marine 39-18653a1 replacement parts
.015 OS Bore Inline Piston Rings - Sierra
Part # 18-3967
Replaces OEM part #
  • MERCURY MARINE 39-18653A1


glm 14920 replacement parts-sierra 18-3980
.015 OS Bore Inline Piston Rings - Sierra
Part # 18-3980
Replaces OEM part #
  • MERCURY MARINE 39-96170A3


mercury marine 39-822321a1 replacement parts
.015 OS Bore Inline Piston Rings - Sierra
Part # 18-3983
Replaces OEM part #
  • MERCURY MARINE 39-822321A1
  • MERCURY MARINE 39-822321A1


mercury marine 39-19721a1 replacement parts
2 Ring .015 OS Bore Inline Piston Rings - Sierra
Part # 18-4020
Replaces OEM part #
  • MERCURY MARINE 39-19721A1


mercury 2 ring .030 os bore inline piston rings
2 Ring .030 OS Bore Inline Piston Rings - Sierra
Part # 18-3920
Replaces OEM part #
  • MERCURY MARINE 39-817096A26


mercury marine 39-18653a2 replacement parts
2 Ring .030 OS Bore Inline Piston Rings - Sierra
Part # 18-3968
Replaces OEM part #
  • MERCURY MARINE 39-18653A2


glm 14930 replacement parts
.030 OS Bore Inline Piston Rings, 2 - Sierra
Part # 18-3981
Replaces OEM part #
  • MERCURY MARINE 39-96170A4


mercury marine 39-822321a2 replacement parts
2 Ring .030 OS Bore Inline Piston Rings - Sierra
Part # 18-3984
Replaces OEM part #
  • MERCURY MARINE 39-822321A2


mercury marine 39-19721a2 replacement parts
.030 OS Bore Inline Piston Rings, 2 - Sierra
Part # 18-4021
Replaces OEM part #
  • MERCURY MARINE 39-19721A2


 
Mallory Ring Set .030 9-54231
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-96170A4
Fits Application:3.375 Bore

 
Mallory Ring Set .030 9-54210
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-19721A2
Fits Application:50-60HP

 
Mallory Ring Set .030 9-54202
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-18653A2
Fits Application:2.565" Bore

sierra 18-3902 piston ring
3 Ring Standard Bore Inline Piston Ring - Sierra
Part # 18-3902
Replaces OEM part #
  • MERCURY MARINE 39-78816A12


 
Mallory Ring Set Std. 9-54217
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-817096A6
Fits Application:2.875" Bore

mercury marine 39-817096a26 replacement parts
3 Ring .015 OS Bore Inline Piston Rings - Sierra
Part # 18-3916
Replaces OEM part #
  • MERCURY MARINE 39-78811A12


 
Mallory Ring Set .030 9-54219
Replaces GLM #:14220
Replaces Original Equipment Manufacturer(OEM):Mercury
Replaces Original Equipment Manufacturer # (OEM #):39-817096A26
Fits Application:2.875" Bore

mercury 3 ring .030 os bore inline piston rings
3 Ring .030 OS Bore Inline Piston Rings - Sierra
Part # 18-3917
Replaces OEM part #
  • MERCURY MARINE 39-88392A12


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No Review for Mallory Ring Set Std. 9-54229
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No Review for Mallory Ring Set Std. 9-54225
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No Review for Mallory Ring Set Std. 9-54208
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No Review for 2 Ring .030 OS Bore Inline Piston Rings - Sierra
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No Review for .030 OS Bore Inline Piston Rings, 2 - Sierra
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No Review for Mallory Ring Set .030 9-54231
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No Review for Mallory Ring Set .030 9-54210
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No Review for Mallory Ring Set .030 9-54202
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No Review for 3 Ring Standard Bore Inline Piston Ring - Sierra
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No Review for Mallory Ring Set .030 9-54219
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This product typically leaves our warehouse in 1 to 3 business days.
To determine the shipping cost and estimated delivery date for this item click Add to Cart, then click Calculate Shipping inside your shopping cart.

General Policy

We work hard to provide you with the best value in product prices and shipping charges, and to get your order to you in a timely, safe, and convenient manner. Internet sales involve the cost of getting the product to you, and shipping carriers base that cost on the size and weight of the package, plus the distance the package travels from our warehouse to your door. We keep our product prices low, negotiate low shipping charges from our carriers and pass those savings on to you, and we don't charge sales tax (except for residents of Utah), so your order from iboats.com is the best value for all your boating needs.

Our standard shipping method is UPS ground, which typically takes 2-5 additional transit days after the order has left our warehouse, depending on your delivery address. We also offer other shipping options, including expedited delivery, and the actual delivery date will depend on the shipping options you choose.

Shipping to Canada

Most products sold by iboats.com can be purchased and shipped to Canada. Some restrictions apply to certain items, such as hazardous materials, over-weight products, and the method of shipping. Available product lines, shipping rates and fees may vary depending on the delivery address for your order.

Currently, iboats.com offers ground shipping to all Canada provinces. Our Canadian brokerage service accelerates your orders through the Customs clearance process and facilitates the delivery of your order through Canada Post or the best method based on your shipping address. We do not currently offer expedited shipping methods to Canada.

At iboats.com we want to simplify your transaction and give you a pleasing purchasing experience so you'll come shop with us again and again. We therefore calculate all the duties, taxes, and other fees specific to Canadian orders and show you the total landed cost of getting the order to your door. There are no hidden fees and will be no surprise COD charges when the package is delivered to you.

Order History & Tracking

We provide several methods to track your order and keep you informed of your order status and expected delivery date. After completing an iboats.com purchase transaction, an account will automatically be created for your provided email address. You'll receive an email from iboats.com Customer Service informing you of your new User Account and the many benefits it provides. If you don't wish to have an iboats.com Account with password, do nothing and your account won't be registered; however, you can respond to the instructions in the email and easily register your account and setup a password. This will allow you to sign in to your account by choosing the Order Status link from any iboats.com page, where you can browse your order history and track the status of all your orders - tracking numbers are displayed that link to the delivery carrier's tracking webpage.

If you have provided your email address during checkout, we will also email you your invoice, which includes a link for tracking your order and viewing the current status of your order. Refer to your invoice email and tracking link any time you wish to track the status of your order

Return Policy

We're here to help! We understand that sometimes a product you purchase just doesn't work out, which is why we want to make the return process as easy as possible for you. After all, we want you to be satisfied with your order so you'll return again and again as an iboats.com customer, and to also recommend us to your boating friends.

Unless specified otherwise, an item(s) may be returned within the first 30 days after the item(s) is shipped to you. Merchandise must be in new, unopened and unused condition with all original packaging in good condition; plus parts, accessories, manuals, and/or warranty cards included. You will need to receive a return authorization number (RA #) as well as instructions from our Customer Service Department.

If needed, we recommend starting your return online to receive a Return Authorization Number(RA #). Returned items(s) that do not have an RA # will not be accepted.

Warranty

iboats.com has a 30-day return policy. After 30 days of your purchase, the manufacturer of the product(s) will need to be contacted for a warranty claim. If you need assistance finding the manufacturers number please contact our Customer Service Department.

Returns for Canadian Customers

Canadian customers, please be careful when placing your order; iboats.com does not accept any return merchandise on Canadian orders unless the merchandise you received was defective, damaged, or an error was made by iboats.com. In such cases, return the merchandise within 30 days of the original shipping date for a full refund.

iboats.com Low Price Guarantee – Quick and Simple

We have the best selection of products at the best prices, guaranteed. 

Nobody beats our prices. If you find a current lower price on an identical, in-stock item from any nationally recognized marine Internet retailer, we will match the price. iboats.com works hard to bring you everyday low prices plus knowledgeable product advice, great in-stock selection, and outstanding customer service. Our guarantee covers it all, and if you’ve found a better price let us know and we’ll match it and work hard to make you a satisfied iboats customer for life.



  Quick:  Call 1-800-914-1123

  Simple:  Have the lower competitive price info ready, as outlined below.

  Buy with Confidence – We Won’t Be Beat!

 

Here’s what you need to supply us to verify a lower price:

  1. The retailer’s name and URL website address of where you found the lower price.
  2. The product name, manufacturer, model number, price, and shipping charges.
  3. Electronics products, trolling motors, and outboard engines are not available for price matching.

 

30-day Guarantee
Buy now with confidence, knowing that should there ever be a lower price from any nationally recognized U.S. marine Internet retailer for 30 days after your purchase, iboats will match that price and refund you the difference. Or we’ll match the price before your purchase. The price considered will be the advertised price plus shipping and handling charges.

Qualifying items must be verifiable on the Internet or through a current printed advertisement. Items must be identical, in-stock new products and not sold through a membership club or auction site or any of the following offers, such as free offers, multiple discounts like “buy one, get one at half off”, special orders, special bundles, clearance sales, mail-in rebate offers, typographical errors, private sales, non-retail websites, promo discounts, or limited-time offers.  All price matching is at the discretion of iboats.com and is subject to change at any time. iboats reserves the right to limit quantities. Price-match products are not eligible for special offers or discounts.

iboats.com – The Leader in Price Buster Confidence!

Do you need Professional Installation? iboats.com has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer:
Click here for more info Click here for more info Price Busting Low Price Guarantee - Click Here for details

 
Please be aware of the following order dates below to have your items have the best chance of delivery by December 24. Shipping options apply to in-stock items only, and not made-to-order products such as boat covers and bimini tops. Mail handlers are extremely busy this time of year, therefore we cannot guarantee delivery before Christmas of any items. For the most up-to-date shipping information, please refer to the estimated delivery time specified in the shopping cart and checkout process.

HOLIDAY ORDERING CUTOFFS

Ground Delivery TUE 15th UPS Ground for most in-stock items
2nd Day Delivery SAT 19th Two-Day Shipping
Next Day Delivery MON 21st One-day Shipping
Same Day Delivery WED 23rd Email Gift Certificates
Order as late as 3pm EST