Briggs & Stratton Air Filter Plus Pre-Filter Air Filter 494511, 494511S, Pre-Filter 492889, 492889S Quality Aftermarket Air Filter Plus Pre-Filter Replaces Briggs & Stratton Air Filters Part Number 494511, 494511S Replaces Briggs & Stratton Pre-Filters 492889, 492889S Width: 3-1/2", Length: 7", Height: 1-1/8"