The Briggs & Stratton 298907 is a genuine OEM Piston Assembly, specifically designed as a .030 inch oversize replacement part. This piston is essential for engine repair and maintenance, ensuring optimal compression and performance in a wide range of Briggs & Stratton small engines. It is compatible with numerous engine series, including 100200, 130200, 170400, 190400, 200400, 220400, 230400, 243400, 250400, 252400, 300400, 320400, 325400, 326400, 400400, 401400, 402400, 404400, 407400, 422400, 42A700, 42B700, 42C700, 42D700, 42E700, 42F700, 42G700, 42H700, 42K700, 42L700, 42M700, 42N700, 42P700, 42Q700, 42R700, 42S700, 42T700, 42U700, 42V700, 42W700, 42X700, 42Y700, 42Z700, 440400, 441400, 442400, 444400, 445400, 446400, 447400, 448400, 449400, 44A700, 44B700, 44C700, 44D700, 44E700, 44F700, 44G700, 44H700, 44K700, 44L700, 44M700, 44N700, 44P700, 44Q700, 44R700, 44S700, 44T700, 44U700, 44V700, 44W700, 44X700, 44Y700, and 44Z700 series engines.