Quick Detail

Product Name: Brass Bulkhead Coupling

Part No. 2: 623 7900

Vehicle Type: Bus, Truck, Trailer

Brake System: Air / ABS / EBS

Quality: ISO9001, IATF16949

DOT Standard: FMVSS 571.106

SAE Standard: J1131 / J844

· Built To DOT And SAE Standards: The coupling meets FMVSS 571.106 and SAE J1131 / J844, the standards US and export buyers check on air brake line fittings, so it can be quoted straight into brake system BOMs for bus, truck and trailer programs.

· One Coupling, All Air Brake Circuits: Part 623 7900 suits air brake, ABS and EBS circuits, passes the tube straight through a chassis panel or frame, and is produced under ISO9001 and IATF16949 quality control.

Description

Brass Bulkhead Coupling for routing air brake and pneumatic lines through a chassis panel, frame or bulkhead on commercial vehicles. Supplied as part number 623 7900, the coupling passes the tube straight through the panel with the brass thread clamping from both sides, so the line crosses the bulkhead without an extra union, bracket or clamp. It is intended for air brake, ABS and EBS circuits on bus, truck and trailer air systems.

The coupling is produced under ISO9001 and IATF16949 quality control, with dimension and thread inspection before packing, so each batch assembles the same way on the line and in the workshop. It meets FMVSS 571.106 and SAE J1131 / J844, which lets it be quoted directly into brake system BOMs for North American and export vehicle programs. Push-in ends seat PA11, PA12 and PU air brake tube by hand, and the fitting can be released and refitted during maintenance.

The brass body resists condensation, road salt and oil mist, and keeps its strength and thread accuracy from cold start to hot engine bay conditions. Engineered for high frequency fleet maintenance and OEM replacement, the coupling suits bus, truck, trailer and semi-trailer air brake lines, including air suspension, and is packed neutral or with custom marking for distributor and OEM programs.

Specifications

Notices

Open the packaging carefully, inspect the coupling body, sealing ring and tube ends for scratches or damage, and handle gently to avoid surface scratch or seal damage. Do not pull forcibly or bend sharply during installation to avoid safety risks of connection loosening and seal cracking. Installation should be performed by qualified personnel to ensure correct assembly, stable sealing performance, and service safety.