Lawn mower engine air filter and foam pre-cleaner set supersedes compatible with Briggs & Stratton part number of 591334, 796031, 594201, 5428K, 5428, 5421 and John Deere part number of MIU14395, MIU13038, GY21435, MIU13963Constructed with premium pleated filter paper, rubber and metal materials compatible with an extended life and provide superior protection against the destructive effects of dirt ingestion, also can save on costly OEM parts but has the same proper fit and percompatible withmance as OEM partsMany engine percompatible withmance problems can be linked to maintenance issues such as stale fuel, dirty air filter, fouled spark plug and deteriorated oil. At least once a year you should replace the spark plug, clean or replace air filter, and check blades and belts compatible with wear. A new spark plug and clean air filter assure proper air-fuel mixture and help your engine run better and last longer.Compatibility:1. Replace part number ofcompatible with Briggs & Stratton 591334, 796031, 594201, 5428K, 5428, 5421John Deere MIU14395, MIU13038, GY21435, MIU13963Oregon 30-851Rotary 13644Napa 7-08242Stens 102-0122. Fits select compatible with Briggs & Stratton model 31 & 40 & 44 engines using round canister style air filter31A507, 31A607, 31A677, 31A707, 31A807, 31C707, 31E577, 31E607, 31E677, 31E777, 31G777, 401500, 405500, 406700, 407700,40N700,40N800,40R500,40R600, 40R700,40R800,445600,44N600,44N800, 44R500, 44R600, 44R700, 44R800 etc. including 13.5-19.5 HP Intek V-Twin engines and single cylinder OHV Vertical 17.5 HP engines3. Some suitable lawn mower tractor modelHusqvarna YTA22V46, YTH22V46, YTH24V48 riding lawn mowersTroy-Bilt Pony Lawn Tractor, 13WN77KS011, 13WN77KS211 tractorsYARDMAN 13AO785T055 mower etc.Color: yellow + blackMaterial: plastic + sponge + metalSize about: about 12.7cm high; outer diameter 7.6cmPackage Contents:4 pcs * Air filter elementOnly the above package content, other products are not included.Note: Light shooting and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.