Fits STIHL Chainsaw 017 018 MS170 MS180. Suitable for Stihl MS170 / 017 MS180 / 018. Model: MS170 MS180 017 018. Carb Carburettor Carburetor for Stihl TS400 Disc Cutter Cut Off Saw. Replaces Zama Carburettor: C1Q-S57A, Replaces Part Number: 1130-120-0603.