Air Filter Plus Pre-Filter Replaces Briggs & Stratton 691667, 493910 Air Filter, 272477, 272477S Pre-Filter Quality (aftermarket) air filter to replace Briggs & Stratton 493910, 691667, 691667S Made to meet or exceed OEM specifications. Includes Washable Pre-filter for Briggs and Stratton 272477S or 272477 Briggs air filter part 493910 now supersedes to 691667 Height: 2-3/8", Length: 7-1/4", Width At Narrow End: 2-3/16", Width At Wide End: 2-7/8"