Premium Air Brake Check Valve for Heavy-Duty Trucks & Buses
High-quality non-return valve ensures reliable one-way airflow, preventing pressure loss in air brake systems. Precision-engineered with durable brass/nylon construction for corrosion resistance and long-term performance. Direct OEM replacement compatible with multiple part numbers (4340140000, 4700564, 81521206004, etc.). Seamless integration with Scania, Volvo, Mercedes, and other major truck/bus brands. Ideal for fleet maintenance, commercial vehicle repairs, and brake system upgrades. Strictly tested to meet ISO safety standards—ensures leak-proof operation under extreme pressure. Wholesale pricing available for bulk orders. Global shipping with guaranteed lowest market rates. Stock up for your workshop or resale business today!