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Sierra 18-3905 Piston Ring Set .030 Oversize for Johnson/Evinrude Outboard Engines

Manufacturer

Picture for manufacturer Sierra

Part Number

18-3905
12 reviews
Sale Price

$34.99

4 left at this price

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Usually delivered within 2 days

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No Hassle Returns

No Hassle Returns

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Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-3905 is a .030 oversize piston ring set engineered for Johnson and Evinrude outboard engines. Designed as a direct replacement for OEM part number 396504, this ring set restores proper compression and oil control in worn or rebuilt powerheads that have been bored .030 over standard dimensions.

Sierra International engineers these marine piston rings to meet or exceed original equipment manufacturer (OEM) specifications, ensuring reliable performance and a proper seal. Each ring set is manufactured to tight tolerances for consistent fit and long service life in demanding marine environments.

Key Features:

  • Bore Size: 3.530 inches (.030 over standard)
  • Direct OEM replacement — meets or exceeds original equipment specifications
  • Designed specifically for Johnson and Evinrude outboard powerhead applications
  • Backed by Sierra's industry-leading customer satisfaction warranty

Interchangeable / Cross-Reference Part Numbers:

  • Johnson/Evinrude OEM: 396504
  • GLM: 24300
  • Mallory: 9-54418, 9-54422
  • Wiseco: 3530KD
  • Sierra: 18-3905

Whether you are completing a powerhead rebuild or performing routine overhaul maintenance, the Sierra 18-3905 piston ring set delivers the quality and reliability needed to get your outboard engine back on the water with confidence.

Great so far! Prices are very reasonable!

Autoplicity agent was very helpful over the phone. He answered all my questions & even did some research to make me feel comfortable I was getting the appropriate parts I needed for my car. I was very pleased & will shop Autoplicity again.

So far so good!

Ordered the Auto Ventshade Ventvisor Deflector 4 pc. (Model 94856) for my 2000 Toyota Camry XLE. Was easy to install with no tools, just use the included strong double sided adhesive tape. Instructions that came with it could've been more detailed on where exactly to install the ventshade as I had to remove them tediously, realizing I had to put them a little higher. Also, there seems to be an unsightly gap between the front and back windows. Works as designed. Satisfied with product. Fast shipping by Autoplicity.

good

So far . . . so good.

Not too bad

So far so good!

easy, discount coupons

Best price for a product I've been shopping for, for months, and when I saw Autoplicity having it for A LOT cheaper, putting the product in my sweet spot price wise, I didn't hesitate to order. <br><br>My bank was a little slow to post the transaction, and I was suprised to get a human on the phone with no effort to make sure my order was properly processed. The gentleman I spoke with was very friendly and promptly answered all my questions. <br><br>Only the $5 I'm getting back for this review can make this deal any better, as I have no suggestion for improving the transaction I made with them.

Very Quick and easy Checkout..

The roof rack I ordered came quickly, shipping was free, and far cheaper than anyone else.<br>This was my first order, and I will order again.

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