My Account
Shopping Cart

Sierra 18-0657 Lower Unit Drain Plug Gasket

Manufacturer

Part Number

118-0657
Sale Price

$4.76

In Stock (10+)

delivery box

Usually delivered within 2 days

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 18-0657 is a replacement drain plug gasket designed for marine lower units. This essential sealing component creates a watertight seal between the drain plug and the lower unit housing, preventing gear oil leakage and water intrusion.

Key Features:

  • Precision-engineered gasket ensures proper seal on lower unit drain plugs
  • Prevents gear oil leaks and protects against water contamination
  • Direct replacement for worn or damaged OEM gaskets
  • Manufactured to meet or exceed OEM specifications
  • Essential maintenance component for lower unit service intervals

Sierra International is a trusted name in marine aftermarket parts, offering reliable replacement components for outboard motors and stern drives. Regular replacement of drain plug gaskets during oil changes helps maintain proper lower unit lubrication and extends the life of your marine drive system.

A

Fast Service

Best price period , easy experience can't wait to receive the tires .

Had the part

Easy

Happy face

Great product

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