HIPA Replace Carburetor Rebuild Kit for STIHL 017 MS170 018 MS180 021 MS210 023 MS230 025 MS250 chainsaw Fitment models: STIHL 017 MS170 018 MS180 021 MS210 023 MS230 025 MS250 chainsaw Replacement carb Kits Check the kits carefully with your stock, and make sure it work for your needs