Air Filter For Briggs and Stratton # 399877 Replaces Part Numbers Briggs and Stratton 399877 Pack Size 1 Item Type : Air Filter Description : Briggs & Stratton Air Filter No. 399877. Fits models 100700 (3.5 hp) Quantum engines. (side starter). Size: L 4-5/8" x W 4-5/8" x H 7/8". Replaces Briggs & Stratton 399877.
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