Your Cart

Sierra 18-7143-9 Marine O-Ring for Mercury Mariner Outboard

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-7143-9
6 reviews
04/22/2036 2:59 AM
Sale Price

$8.38

In Stock (10)

delivery box

Usually delivered within 2 days

Add To Cart

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-7143-9 is a precision-engineered marine O-ring designed for Mercury, Mariner, MerCruiser, Johnson/Evinrude, OMC, and Volvo Penta marine engines. This replacement seal provides reliable protection against oil and fluid leaks in powerhead assemblies and stern drive applications.

Key Specifications:

  • Inner Diameter: 1.31 inches
  • Width: 0.10 inches
  • Package quantity: 5 O-rings per package
  • Premium quality construction for extended service life

Replaces OEM Part Numbers:

  • Mercury Marine: 25-65936, 27-58025
  • MerCruiser Stern Drive: 391-5081
  • Johnson/Evinrude: 331188
  • OMC Stern Drive: 322501, 331188
  • Volvo Penta: 3852169
  • GLM: 81250

Sierra Marine parts meet or exceed OEM specifications, ensuring proper fit and reliable performance for marine engine maintenance and repair applications.

Very easy to conduct business on line

Easy to order with Amazon billing. See if it shows up on time.

Easy to find and order, esp with amazon checkout, but no way to expedite delivery or even validate stock.

Site was easy to navigate. Correct item delivered in just a few days. Satisfied with service.

Great products, fast shipping, excellent prices, Thanks guys, looking forward to doing business with you again. , fast and easy.Very good website.

Great Price, Not too much more for 2 day shipping either.

Share icon
Return Policy
Returns are easy at Boatplicity

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy