Non-Genuine Briggs & Stratton Air Filter and Pre-Filter Briggs & Stratton: 593435, 593435B, 792105 (air filter & pre-filter), 792303 (pre-filter), 4 7/8" 124 mm 5" 127 mm 3 1/8" 29 mm Fits: Briggs & Stratton 40 and 44 CID OHV V-Twin cylinder engines including selected types and codes of 407777, 40G777, 40H777, 40S777, 40S877, 40U777, 40U877, 445577, 445677, 445877, 44H777, 44K777, 44L777, 44M777, 44N677, 44N777, 44P777, 44Q777, 44R677, 44S577, 44S777, 44S877, 44S977, 44U577, 44U677, 44U777, 44U877, 49M777, 49M877, 49S777 and 49S877 engine models.