Podoy 493537S Pre Air Filter for Briggs & Stratton 271933 491435 491435S 493537 493537S 491588 Lawn Mower Replace Packaging includes 1 pc pre filter Pre-cleaner for 491588S Fits for Briggs & Stratton 493537S 3.5 to 6 HP Quantum and 6 HP vertical small engines Non original aftermarket part