Model Compatibility: Fits MS361 saw models requiring C3R-S279 and RB-267 carburetor repair kits for functional replacement of worn or damaged components. Part Number Match: Contains components designed to match the specifications of C3R-S279 and RB-267 carburetor part numbers as listed in the title. Functional Purpose: Restores carburetor by replacing seals, gaskets, diaphragms, and other wear-prone parts included in the kit. Installation Scope: Intended for use during carburetor servicing on compatible MS361 chainsaws where C3R-S279 or RB-267 carburetors are installed. Fit: Compatible with MS361 saws equipped with either C3R-S279 or RB-267 carburetor assemblies as specified in the title., Manufacturer: HTnhUAufA