Keep Summer Going Strong with our August Sale Savings up to 50% OFF!

.25 Os Bore Inline Piston Ring Japanese Model - 18-3977 - Sierra

Sweet Savings! Extra Discounts Now.
.25 Os Bore Inline Piston Ring Japanese Model - 18-3977 - Sierra
Limited Sale Price: $11.69
Part # 18-3977 ValueShip™ Eligible
No Reviews | Write Review | Ask Question
This item is found in the following Product Families
Mariner Japanese Mariner .25 OS Bore Inline Piston Rings
Yamaha Outboard .25 mm OS Inline Piston Rings
Mercury Marine 39-83196M replacement parts
Mercury Japanese Model Inline Piston Rings
Replaces OEM part #
  • MERCURY MARINE 39-18939M
  • MERCURY MARINE 39-18939T
  • YAMAHA 682-11610-11-00
Ask a question for
Question & Answer Guidelines
This product ships in 1 business day.

Add to Cart and enter your Postal Code to determine the shipping charges and estimated delivery date.
* Most products and orders leave our warehouse in 1 business day. However, select items may take more processing time. Alaska and Hawaii orders please add 1 additional warehouse processing day.
Standard Shipping Policies
Do you need Professional Installation? has teamed with a national network of independent installers that are ready to handle your installation needs.
Find your local Amtech dealer:
Save More Now and Keep the Summer of Boating Fun Going Strong!