The Kohler 1787411-S Engine Piston with Ring Set Standard Kit is a replacement engine component designed for compatible Kohler engines. The piston and piston rings work together to support compression, efficient combustion, and reliable engine performance. This standard-size kit is suitable for engine maintenance and repair when existing piston components are worn, damaged, or no long... https://www.wholetoolbox.com/kohler-1787411-s-engine-piston-w-ring-set-standard-kit/1787411-S.html