The Briggs & Stratton 792144 Piston Assembly 020 helps restore proper engine compression and reliable power delivery. Designed as a replacement piston assembly with a 0.020-inch oversize specification, it moves within the engine cylinder during combustion, transferring force through the connecting rod to the crankshaft. Proper piston function helps maintain compression, support effici... https://www.wholetoolbox.com/briggs-stratton-792144-piston-assembly-020/792144.html