The Sierra PISTON RING SET (18-3902) is compatible with Mercury marine applications. Mercury Marine 39-45155A12, 39-78816A12, and Mallory 9-54217 are interchangeable with this part.
This high-quality piston ring set provides long-lasting, resilient, and dependable service even in harsh marine conditions. Its design is for use on 3-ring pistons with a standard bore size of 2.875.
It is of excellent precision design to meet the required marine-grade quality standards.
Key Features:
Specifications:
BORE SIZE: 2.875/STD, For: 3 Ring Pistons
We can ship to virtually any address in the US. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.)
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, please Contact Us with your order number and details about the product you would like to return. We will respond quickly with instructions for how to return items from your order.
Sea Star Solutions
The grooves of piston rings are used for more than just supporting the rings. They impact combustion sealing, oil control, friction, and a variety of other engine characteristics. The piston ring is...
Sea Star Solutions
Standard Size; Fits Yamaha OutboardsThis product replaces:688-11603-A0, 688-11603-A0-00, 70739045574, 47-3969, 808282244132, 9-54812
Sea Star Solutions
Size: STD, All pistons are supplied complete with piston rings & wrist pinThis product replaces:47-3928, 3099975595, 30999755957
Sea Star Solutions
Size: STD, All pistons are supplied complete with piston rings and wrist pinThis product replaces:47-3937, 328506, 12370, 14089025, 985083, 986336, 3099997599, 30999975997, 914555
Sea Star Solutions
Size: STD, All pistons are supplied complete with piston rings and wrist pinThis product replaces:370409, 47-3944, 33302, 30999976062, 3099997606
Sea Star Solutions
Bore Size: 3.685This product replaces:47-3975, GLM24250, 808282244149, 92-24250, 9-54432
