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Sierra 18-3982 Standard Piston Ring Set for Mercury Mariner Outboards

Manufacturer

Picture for manufacturer Sierra

Part Number

118-3982
6 reviews
Sale Price

$36.89

In Stock (5)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3982 Standard Piston Ring Set is a premium-quality aftermarket replacement designed for Mercury and Mariner crossflow and inline outboard engines. Engineered to meet or exceed OEM specifications, this piston ring set delivers reliable performance in harsh marine environments.

Key Specifications:

  • Bore Size: 3.500 inches (Standard)
  • Designed for 75-125 HP 2-stroke 3-4 cylinder engines
  • Standard bore size (not oversize)

OEM Cross-Reference Numbers:

  • Mercury Marine: 39-822321A12, 39-822321A8, 39-824905A12
  • GLM: 14940
  • Mallory: 9-54225

Sierra Marine products are manufactured to exacting standards and provide dependable replacements for engine rebuild and maintenance applications. Each ring set is precision-engineered to ensure proper sealing, optimal compression, and long-lasting durability in demanding marine conditions.

Got them fast. Easy install and my boat rolls on and off so east now. Also installed a Drotto auto lock.

Thank you fast service

Easy order , quick delivery

1st time buyer, hope its a full set of springs and fast shipping

Good

easy site to navigate - excellent product selection

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