Briggs & Stratton 5064K Premium Pre-Cleaner Used with Part Number 5043K Replaces Briggs & Stratton Service Part #493537S For 3.5 through 6.75 Horsepower Quantum Engines and 625 through 1575 Series Engines Used with Briggs & Stratton air filter 5043D, 5043H, and 491588S Genuine Briggs & Stratton Part