Catalytic Converter Type Approved BM91779H BM Catalysts. Part Number BM91779H. HONDA 18190RB0E50, 18190RB0G00, 18190RBJG00. Unique approval number for each BM part number. Type Catalytic Converter. It works by converting exhaust emissions into less harmful ones when the gasses pass through it, triggering a chemical reaction.
