Savior Carburetor + RB-77 Rebuild Carb Kit + Air Filter for STIHL 017 018 MS170 MS180 Chainsaw with Zama Carb High quality carburetor for Zama + RB-77 repair kit + air filter Fit STIHL MS170 MS180 017 018 Chainsaw Carburetor Replace Part number: 1130-120-0603 Replace to Zama C1Q-S57 C1Q-S57A C1Q-S57B Package included: 1pc carburetor, 1pc carb kit, 1pc air filter