Rotary Corp brand aftermarket product. Piston Ring Set Fits  Briggs & Stratton Models:  220000 - 222000, 252000 - 257000, 280000 - 286000, 40000, 402000 - 422000.  10-12.5 & 14-18 HP Engine Models.  Used with Rotary #8826 Piston Ring Set.
Replaces:- BRIGGS & STRATTON 391782
- BRIGGS & STRATTON 499998
Dimensions:- CYLINDER DIAMETER: 3-7/16"