MAD SAVINGS! on over 15,000 items.
Shop the 7th Annual Boating Madness Sale

2 Ring .015 Os Bore Inline Piston Kit - 18-4621 - Sierra

Save 29% Off.
2 Ring .015 Os Bore Inline Piston Kit - 18-4621 - Sierra
Madness Sale Price: $115.19
Save: $48.00
(29% Off $163.19)
Part # 18-4621 ValueShip™ Eligible
SHIPS TODAY!* if ordered in 7 hrs 12 mins.
No Reviews | Write Review | Ask Question
This item is found in the following Product Families
Mariner 2 Ring .015 OS Bore Inline Pistons
    Mercury Marine 776-8900A2 replacement parts
      Mercury Inline Pistons
        Mariner Inline Pistons
          Replaces OEM part #
          • MERCURY MARINE 780-9229A10
            40-50 HP, 4 cyl, 2.580/.015 bore
            18-4621 Piston - replaces O.E.# 780-9229A10
            18-3967 Piston Ring - replaces O.E.# 39-18653A1
            Wrist Pin ( Not Sold Separately)
            18-4294 Circlips - replaces O.E.# 40-52035

          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:
          CRAZY SAVINGS! Now's the time to Grab New Gear - Pocket More Savings.