HOOAI New Pack of Carburetor Fuel Line Filter Intake Manifold Oil Pump Spark Plug for Stihl 017 018 MS170 MS180 Replace 1130 120 0603 Direct Replacement! Replaces P/N: Stihl MS170 MS180 017 018 Chainsaw. OEM Part Number: 1130 120 0603 Note: there are 2 kinds of carburetor for STIHL MS170 MS180 017 018, one with a bulge on the top and another one without it, we have both carburetors, please compare it with your original one before ordering it 3 Months warranty from our store! We are professional carburetor manufacturer and seller! Please compare your old carburetor with the pictures if you are not sure if it will fit.