Replacement for Briggs & Stratton Air Filter 270251. Fits Briggs & Stratton 3-4 HP Vertical Shaft Engines, Series 82500-82900. Air Filter Dimensions 5-7/8" x 3-1/2" x 1-1/2" Item: BAF-112, 270251, bs-270251 Features Fits Briggs & Stratton 3-4 hp vertical shaft engines, series 82500-82900 Replaces OE # 270251 Contains one air filter