N2 H654 Fuel Filter for Most Lawn Mowers with 2 thru 30 HP Engines Including Briggs & Stratton, Kohler, Honda, Kawasaki, Tecumseh, and More Your engine must have a fuel pump for this filter to work correctly Fuel lines inner diameter must be 1/4 or 5/16-inches Warranty: This part shall be free from defects in material and workmanship under normal use and service for three-months from the date of purchase You can return this item (for any reason) if you ask for a return within 30 days of receiving your order and have not installed your product