Description
Genuine Yamaha by-pass valve assembly for carburetor systems. This assembly helps control deceleration fuel/air flow to reduce popping and ensure smooth transitions. Built to Yamaha specifications for proper fit and reliable performance.
Part number: 2H7-13340-00-00
Also referenced as: By-Pass Valve Assembly, Air Cut-Off Valve Assembly
- Direct Yamaha replacement part
- Engineered for correct sealing and response
- Restores proper carburetor function on decel
Superseded/replaces PNs: 1J7-13340-00-00; 1L9-13340-01-00; 90401-20041-00; 90401-20052-00; 90401-20055-00
Fitment note: Used on select Yamaha motorcycles (model codes such as 2H7, 1J7, 1L9 may apply). Please verify compatibility with your Yamaha parts fiche before ordering.
Installation: Professional installation is recommended. Inspect associated gaskets/diaphragms and fuel lines during service.







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