The Meritor S434-208-034-0 (also listed as S4342080340) is a genuine OEM double check valve for heavy-duty truck air systems. Sourced from the WABCO Service Parts Catalog (PB19028), this valve is classified under Meritor air system components and is sold as a direct OEM replacement. Double check valves are a critical element in dual-circuit air brake systems, allowing air to pass from the higher-pressure circuit while blocking reverse flow from the other. Purchase from Pro Gear and Transmission for a confirmed genuine Meritor part. Call us to verify proper fit for your application before ordering.
Features
Genuine Meritor OEM part number S434-208-034-0 or S4342080340
Classified as an air system double check valve (AIR SYS - VALVE, DOUBLE CHECK)
Sourced from WABCO Service Parts Catalog PB19028
Designed for heavy-duty truck dual-circuit air brake systems
Sold by Pro Gear and Transmission as a confirmed OEM component
