The Kramp 696403 standard piston ring set is a high-quality aftermarket replacement for Briggs & Stratton OEM part number 696403. Designed for Briggs & Stratton 310000, 31A000, 31B000, 31C000, 31D000, 31E000, 31F000, 31G000, 31H000, 31L000, 31M000, 31P000, and 31Q000 series engines. This set features a bore diameter of 79.38 mm (3 1/8 inches) with ring thicknesses of 2.03 mm (0.080 inches) for the top and second rings, and 4.76 mm (0.1875 inches) for the oil ring, ensuring optimal engine compression and performance.