Air Filter Replace 399877, 399877S, 4103.
Fits 100700, 100708 for 3.5 HP Quantum engines with sidestarter.
Compatible With 30-720.
High Quality: Factory filter, meet OEM standards. Separate packaged, easy store.
Size Perfect Fit: 4-5/8″ Width x 4-5/8″ Length x 13/16″ Height, You will get 2 pcs Air Filter.
2 Pack 399877 Air Filter Replace for Briggs & Stratton 399877, 399877S, 4103, 30-720 Fits Briggs & Stratton 100700, 100708 for 3.5 HP Quantum engines with sidestarter Lawn Mower Air Cleaner Element, Size Perfect Fit: 4-5/8″ Width x 4-5/8″ Length x 13/16″ Height, You will get 2 pcs Air Filter.