Piston Ring Std / Briggs & Stratton 298982Pack Size:1Briggs & Stratton 298982ESF 163-073, Foley/Belsaw 5961461, Foley/PLP 163-073, Green Meadow R20, Laser L5511, Laser 94140, NHC 266-9831, Oregon 36-002, Prime Line 7-03719, Ratio Parts 3-151, Rotary 1461, Sunbelt SB-1461, Sunbelt B1SB1461Briggs & Stratton 90100-92900, 93500-93900, 94500-96500, 98900, 130200, 135200, 135700 and 136200Cylinder Diameter: 2.5625 ", Ethanol: Not compatible with greater than 10% ethanol fuel