HIPA (Pack of 2) 14-083-01-S 14-083-02-S Air Filter Pre Cleaner for Kohler XT149 XT173 Engine Lawn Mower Replacement manufacturer part number: 14-083-01-S 14-083-01-S1 and KH-14-083-01-S, Pre filter: 14 083 02-S Air filter L x W x HT: 5-3/4" x 3-1/2" x 1", Pre filter L x W x HT: 5-5/8" x 3-3/8" x 1/4" For Kohler XT149 XT173 engine (won't fit XT675) Package include: 2 x air filter, 2 x pre filter Measure your air filter size carefully before purchase, make sure it fits