For Briggs & Stratton Quantum 491588S 494245 399959 B2LM Air Filter Spark Plug @
Replaced Briggs and Stratton 491588, 399959, B2LM. Replaces the part number: air filter: replaced 399959, 491588. Not original part, suitable for Briggs & Stratton Quantum engines, such as those built into the Hayter Harrier 41, 48, 56 models.