Description

The Sierra 18-4621 Piston Kit contains components that are built with precision and high-quality material. Designed to be interchangeable with the following: Mercury 780-9229A10, 743-3366A2, 743-3366A1. Each Sierra product meets or exceeds the original equipment part it replaces.
Sierra Piston Kit
Bore Size: 2.580/.015
Built with precision
Interchangeable with the following: Mercury 780-9229A10, 743-3366A2, 743-3366A1