HIPA (Pack of 4) Air Filter Cartridge for Briggs & Stratton 491588 491588S 399959 John Deere PT15853 LG491588JD Mowers Repaces Briggs & Stratton 491588 491588S 399959 Fits John Deere LG491588JD PT15853 On 3hp to 5hp horizontal, 3.5 to 6 HP Quantum and 6 HP vertical small engines Qty: 4pcs