Cylinder bore seal 884391 is a high-quality replacement gasket for select high-horsepower Mercury and Mariner outboards. Produced to meet rigorous quality standards, this seal ensures a proper watertight fit within the cylinder block. Easy to install with common shop tools, it is a vital component for major engine service and rebuilds.
- Fits Mercury/Mariner 200-300hp FourStroke and 2-stroke outboards
- Compatible with DFI, EFI, Sport XS, Pro XS, and select 250hp SportJets
- Ensures a precision seal for the cylinder bore
- Easy to install with common shop tools
- Produced to meet original equipment manufacturer specifications
