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Sierra
118-3921

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

SKU SIE-18-3921 MPN 118-3921 UPC 030999621665 MFR Sierra

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
$54.49
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Back to: Mercury Outboard 2 Ring Inline 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

BrandSierra
Manufacturer Part No.118-3921
UPC030999621665
Dimensions4" L × 4" W × 0.68" H
Shipping Weight0.06 lb
Shipping Box6x6x6"
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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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