(920) 662-7605

Used Outboard Parts & Fresh Water Sterndrive Parts

$1.50
Part number 18-7491.
Replaces OEM Mercury Marine 25-36318.
Equivalent to OMC 301967, 777904.

Sierra O-Ring, .799 ID x .103 W

Replacement Mercury Mariner Mercruiser Marine Engine O-Ring.


Please check the part numbers for your fitment needs. If you are unsure whether this part fits your model, please contact us with your serial number and we can help determine if it is right for your engine. Thanks for looking!!!

Thank you for shopping at Boats.Parts!!

Boats.Parts offers the most used Stern Drive & Outboard parts in Wisconsin.



cat-d34

Brands & Clients

  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand
  • brand