Briggs & Stratton 491588,491588S, 399959,5043B air filter

Briggs & Stratton 491588,491588S, 399959,5043B air filter,Width 4-1/2", Length 5-1/4"; Fits Briggs 3.5 to 6 horsepower Quantum engines and some 3 & 5 horsepower horizontal shaft engines