My Account
Shopping Cart

Sierra 18-1840 Water Dampener Seal for Yamaha Outboard Motors

Manufacturer

Part Number

18-1840
Sale Price

$9.01

1 left at this price

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 International 18-1840 is a replacement water dampener seal designed for Yamaha outboard motors. This seal is a critical component of the outboard cooling and water pump system, helping to maintain proper water flow and pressure regulation within the engine's lower unit.

Key Features:

  • Direct replacement water dampener seal engineered to meet or exceed original equipment specifications
  • Compatible with Yamaha F2.5 outboards (2015–2020) and Yamaha F4 and F6 outboards (2014–2020)
  • Interchangeable with select Yamaha OEM water dampener seal part numbers
  • Sold as a single seal per package
  • Manufactured by Sierra International, a trusted supplier of marine engine replacement parts

Sierra International has been producing aftermarket marine parts engineered to meet or exceed original manufacturer specifications for decades. The 18-1840 water dampener seal is designed to restore proper function to your Yamaha outboard's cooling system, making it ideal for routine water pump service and maintenance.

They where to big to fit but everything else was good on how fast was delivered n price but just not right thanks

Lets see if you deliver

So far so good

ok

Prices are good, product information is not good enough. I had to search these products elsewhere for any information about them other than the title. If during that search I found the items cheaper someplace else, you would have lost this sale.

I was apprehensiveness at first to make a major purchase with Autoplicity due to their extremely low price and lack of reviews. I decided to take the chance and I am very glad I did. I made my order on a Monday morning at 0900 eastern time and my product arrived on Wednesday at 3pm. The item was exactly as described and the most astonishing part is that my purchase was released from the factory less than 45 days ago. I was expecting a model that had been sitting on a shelf for the last year and needed to be updated. That was not the case. I will definitely order from Autoplicity again in the future.

shipment came very speedy and everything was exactly as expected. All parts were in excellent condition.

great prices and free shipping as well as no tax!

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