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Sierra Marine (MW)
118-3921

Sierra 18-3921 Piston Rings Replaces 39-93481A12 - (MW)

SKU SIE-18-3921 MPN 118-3921 UPC 030999621665 MFR Sierra Marine (MW)

Express
Toronto, ON Vancouver, BC NJ, Warehouse FL, Warehouse
"Express" items are automated and typically shipped out the next available business day and delivered within 4 days.
In Stock 1 available
$42.49
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Back to: Mercury Outboard V6 Pistons

Sierra 18-3921 Mercury Standard Piston Rings

Sierra high-quality engine parts are designed to meet OEM specifications.

  • Bore Size: 3.125 / Standard

Interchangeable with:

  • GLM
    • 14240
  • Mallory
    • 9-54233
  • Mercury Marine
  • Wiseco
    • 3125KD

WARNING: Cancer and Reproductive Harm - P65Warnings.ca.gov

Product Specifications

Dimensions6.0000" L × 6.0000" W × 6.0000" H
Shipping Weight.06 lb
Liberty Marine USA Logo
Proudly serving customers across United States & Canada with Marine, RV parts and accessories.

Shipping Warehouse Locations:
New Jersey, USA
Florida, USA

About Us

LibertyMarineUSA supplies marine and RV parts and accessories from trusted U.S. manufacturers and proven, quality-approved imported manufacturers. We focus on dependable, quality-tested products from reliable sources, so you can maintain, repair, and outfit your boat or RV with confidence.

Our goal is simple: to deliver the best quality marine parts you can count on. We focus on dependable service, fast shipping, and proven products that are either American-made or American-tested and approved for quality and reliability.

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