Sponge air prefilter for lawn tractor lawn mower compatible BRIGGS STRATTON Weight: 6 g Compatible with air filter: 33270308 For models: BRIGGS STRATTON 170400 - 190400 - 195400 - 254400 - 402400 - 421400 - 422400 - Vanguard OHV Original Code: 33270309 Original Code: 271939 BRIGGS STRATTON NS - ah