Kit includes piston compression ring and cylinder to restore compression. Note: this kit is a piston replacement for piston head with screw in top only.
Restore compression with this piston assembly kit. Low compression is usually caused by a damaged compression ring and/or a worn cylinder sleeve. If you can see light in between the outer edge of the compression ring and the cylinder sleeve, replace the components, or if the compression ring is torn, folded or damaged along the outer edge.