N2 261-1131 Air Filter Cartridge for Briggs & Stratton 796031, 591334 &ndash; Fits Intek 13.5-19.5 HP & Model 31: 31A507, 31A607, 31A677, 31A707, 37A807, 31C700, 31E577, 31E607, 31P677, 31E777 & 31G777 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 Inner dimensions: 1-1/2-inches, outer dimensions: 3-inches, length: 5-inches