Brass Push-Lock Bulkhead Union - 1/2" DOT Nylon Air Brake Tubing - Replaces Parker 62PMTBH-8 Gates G31300-0808 177.13B62BH8

Take a 1/2 in supply line through structure without cutting the truck's biggest air line to pieces, using this DOT brass push-lock bulkhead union distributed by FleetPro Parts & Tires. Half-inch nylon is stiff and heavy, and an unsupported pass-through works that stiffness straight into the hole edge until the line splits. A bulkhead union clamps the joint to the panel so the tubing stops carrying the load. 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.

Anchoring the Big Line: The 1/2 in Brass Bulkhead Union Advantage

Manufactured by Automann to Fleet Standard specifications, this brass bulkhead union accepts PLC 1/2 in DOT nylon tubing on both ends and threads through the panel with its own nut. On the supply side of the system, where volume matters and a restriction shows up as slow build times, a full 1/2 in path through the bulkhead keeps the circuit breathing. It is DOT-approved for heavy-duty air brake systems and meets FMVSS 571.106.

Both ends are push-lock, so even the large tubing goes together with a square cut and firm pressure rather than a flare tool and a torque wrench. This part number replaces 177.13B778 in the Automann line, so an older bin tag or shop list still points to the correct current part.

At FleetPro Parts & Tires, we know the biggest line deserves the strongest pass-through. This Automann union is a direct replacement for highly searched industry numbers including Parker 62PMTBH-8, Gates G31300-0808, Tectran PL1377-8 and Velvac 016880.

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 1/2 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-8, 62PMTBH8, 62PTCBH-8, 62PTCBH8
• Gates Interchange: G31300-0808, G313000808, 8AB-8AB-BKHD, 8AB8ABBKHD
• Tectran Interchange: PL1377-8, PL13778
• Fairview Interchange: PC1477-8, PC14778
• Anderson Interchange: 02482-08, 0248208
• Sloan Interchange: S62PMTBH-8, S62PMTBH8
• Other Interchange: Haldex APB82H8, Velvac 016880, 1874X8X8
• Automann Supersession: Replaces 177.13B778
• Automann Distributor #: 177.13B62BH8

Technical Specifications

• Component Type: Brass Bulkhead Union, Push-Lock (PLC)
• Tubing: PLC 1/2 in DOT nylon tubing, both ends
• Material: Brass
• Application: Universal
• Replaces: 177.13B778
• Compliance: FMVSS 571.106, DOT-approved for heavy-duty air brake systems
• Product Level: Fleet Standard Aftermarket
• Brand: Automann (Distributed by FleetPro Parts & Tires)