BRIGGS & STRATTON 843793 Lawn Mower Ring Set

The Briggs & Stratton 843793 Lawn Mower Ring Set seals this combustion chamber within the cylinder bore, positioned in the outer grooves of the piston. These circular bands exert outward radial pressure against the cylinder wall to form a tight barrier against expanding combustion gases. This mechanical barrier prevents compression loss and stops motor oil from entering the combustion zone, ensuring optimal pressure retention during the power stroke. By maintaining a clean seal and regulating the oil film on the cylinder surface, the part maximizes thermal efficiency and prevents excessive oil consumption during operation.