The BRIGGS & STRATTON 499998 Engine Ring Set-020 helps maintain proper compression for efficient and reliable engine performance. This ring set is designed to fit around the piston, creating a seal between the piston and cylinder wall to support effective combustion. It works by controlling oil distribution and preventing combustion gases from escaping, ensuring consistent engine oper... https://www.wholetoolbox.com/briggs-stratton-499998-engine-ring-set-020