Model 31 OHV non avs
792307 B&S Piston Assembly Model 28
Piston Assembly for the Model 28 Briggs with Rings and Circlips. Also works in the Briggs Models 42 and 46 opposed twin with the ARC billet opposed twin connecting rods. 3.44"(87.3mm) bore size. Requires #697099 Briggs wrist pin.