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Sierra 18-3937 Marine Piston Ring Set for GM and Mercury Marine Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3937
14 reviews
Sale Price

$33.36

2 left at this price

delivery box

Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3937 is a high-quality marine piston ring set designed for GM and Mercury Marine inboard and sterndrive engines. This replacement ring set meets or exceeds OEM specifications to ensure proper compression, oil control, and long-lasting engine performance in marine environments.

Key Features:

  • Premium materials engineered for marine engine durability and corrosion resistance
  • Precision-manufactured to OEM tolerances for proper fit and sealing
  • Compatible with multiple engine applications from leading marine manufacturers
  • Ensures optimal compression and oil control for reliable engine operation

OEM Cross-Reference Numbers:

  • Crusader: 12370
  • GM: 14089025
  • Mercury Marine: 39-17464
  • OMC: 328506, 3853268, 3853960, 914555, 985083, 986336

Sierra International is a trusted name in marine replacement parts, providing professional-grade components that deliver dependable performance for boat owners and marine mechanics. This piston ring set is ideal for engine rebuilds and maintenance on compatible GM-based marine engines.

Great pricing. (Check on google and they were the cheapest and had great reviews.) Quick shipment and everything is as they said it would be.

It was easy

Easy shopping so far

First time and liked it.

Best prices. Wish you had pics of the back of the gauges.

It was fast and easy. I would definitely do business with again.

Cheapest priced ARP head studs on the internet. A++ I will definitely do more business with Autoplicity.

Great service

Thanks for your help off eBay , directing me to your site ! #ebayfollowed

Thanks

this was a very easy and user friendly site to use.

great store

Fast shipping! would buy from again for sure! Great product at the best price that I could find!

Was able to find parts I needed easily and at a great price!

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