HIPA 14-083-01-S 14-083-01-S1 Air Filter 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 Air filter L x W x HT: 5-3/4" x 3-1/2" x 1" For Kohler XT149 XT173 engine Package include: 1 x air filter