Brass Push-Lock Bulkhead Union - 1/4" DOT Nylon Air Brake Tubing - Replaces Parker 62PMTBH-4 Gates G31300-0404 177.13B62BH4

Pass a 1/4 in air line through a frame rail, panel or bracket the right way with this DOT brass push-lock bulkhead union distributed by FleetPro Parts & Tires. A bulkhead fitting anchors the tubing at the hole and takes the load, so the line stops sawing itself in half on the sheet-metal edge every time the chassis flexes. Chafed-through air lines are one of the most common causes of a trailer that will not release and of a violation written at the scale house. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, trailer repair shops, and owner-operators nationwide.

A Supported Pass-Through: The Brass Bulkhead Union Advantage

Manufactured by Automann to Fleet Standard specifications, this brass bulkhead union takes PLC 1/4 in DOT nylon tubing on both ends and clamps into the panel with its own nut, giving you a sealed, mechanically supported joint instead of a rubber grommet and a prayer. It is DOT-approved for heavy-duty air brake systems and meets FMVSS 571.106.

Both push-lock ends accept standard DOT nylon air brake tubing with a square cut and firm pressure, which makes a bulkhead pass-through one of the fastest repairs on the truck: drill or reuse the hole, seat the union, push both lines home. This part number replaces 177.13B774 in the Automann line, so older shop lists and inventory tags still point here.

At FleetPro Parts & Tires, we know that where a line crosses structure is where it eventually fails. This Automann union is a direct replacement for highly searched industry numbers including Parker 62PMTBH-4, Gates G31300-0404, Tectran PL1377-4 and Velvac 016840.

Vehicle Fitment & Compatibility

This DOT brass air fitting uses a universal design intended for the following commercial applications:

• Make/Model: Universal - heavy-duty tractors and commercial trailers
• System: Air brake plumbing, DOT-approved for heavy-duty air brake systems
• Connection: PLC 1/4 in DOT nylon tubing on both ends, bulkhead mounted
• Compliance: Meets FMVSS 571.106

Direct Replacement & Cross-Reference Numbers:

This Automann brass fitting serves as a direct replacement for the following part numbers:

• Parker Interchange: 62PMTBH-4, 62PMTBH4, 62PTCBH-4, 62PTCBH4
• Gates Interchange: G31300-0404, G313000404, 4AB-4AB-BKHD, 4AB4ABBKHD
• Tectran Interchange: PL1377-4, PL13774
• Fairview Interchange: PC1477-4, PC14774
• Anderson Interchange: 02482-04, 0248204
• Sloan Interchange: S62PMTBH-4, S62PMTBH4
• Other Interchange: Haldex APB82H4, Velvac 016840, 1874X4X4
• Automann Supersession: Replaces 177.13B774
• Automann Distributor #: 177.13B62BH4

Technical Specifications

• Component Type: Brass Bulkhead Union, Push-Lock (PLC)
• Tubing: PLC 1/4 in DOT nylon tubing, both ends
• Material: Brass
• Application: Universal
• Replaces: 177.13B774
• Compliance: FMVSS 571.106, DOT-approved for heavy-duty air brake systems
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)