Main Air Filter: 491519, 399806S, 399806. Pre Filter Foam: 271962S, 271962. 253700 to 253799, 253702, 253707, 11HP, Vertical Crank. 281700 to 281799, 281707, 12HP, I/C, Side Valve, Vertical Crank.
This air filter set is ideal for owners of Briggs & Stratton engines, such as the 11hp or 12hp models with model numbers 491519 or 399806, or the 271962.
