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Sierra 18-3904 Standard Piston Ring Set for Johnson Evinrude Outboard

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3904
13 reviews
Sale Price

$35.21

In Stock (5)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3904 is a standard bore piston ring set designed specifically for Johnson and Evinrude outboard engines. This high-quality replacement part meets or exceeds original equipment specifications, providing reliable performance in demanding marine environments.

Key Features:

  • Standard bore size: 3.500 inches (88.9mm)
  • Complete ring set includes top ring, second ring, and oil ring
  • Designed for 4-cylinder and 6-cylinder applications
  • Fits Johnson/Evinrude outboards from 65 HP to 300 HP
  • OEM quality construction for optimal sealing and performance

OEM Cross References: Replaces Johnson/Evinrude 394930, GLM 24210, Mallory 9-54416, and Wiseco 3500KD. Each ring set is engineered to seal the combustion chamber, transfer heat efficiently from piston to cylinder wall, and regulate oil consumption for maximum engine longevity.

Extremely simple ordering process with no petty passwords to remember

good price heavy switch

Great and easy!

Painless and good price. I'll B Back

Thanx

Amazon Payment was easy.

cheapest prices on the internet

Best Price, Fast shipping, couldn't ask for anything more.

Great experience with Autoplicity. Got online, searched for new shocks, found best value from Autoplicity. Ordered new shocks and received them as promised, installed them and now I am a very satisfied and happy customer.

amazing company fast and easy shipping. part came in as advertised, cheap too

Found the item I was looking for at Autoplicity for $20 cheaper than anywhere else. Shipping was also very quick.

Outstanding

good

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