Feature: 1. Practical air filter, fit for GX140 GX120K1 GX120RT2 GX120U1 GX120UT1, easy to install and use. for GX140 GX120K1 GX120RT2 GX120U1 GX120UT1. Replace Genuine Air Filter: For part # GX160 GX200 GX140 GX100 GX110 GX120 air filter, model # 17210-ZE1-517 17210-ZE1-505 17210-ZE1-507 17210-ZE1-822 17210-ZE1-821 17210-ZE1-820, fit 5hp, 5.5hp, 6hp engine.