Brass Push-Lock Bulkhead Union - 1/2" Tube x 1/2" Female NPT DOT Air Brake Fitting - Replaces Parker 66PMTBH-8-8 Gates G31360-0808 177.13B66BH8D
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$41.69
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Fitment
Fits these trucks
Universal - heavy-duty tractors and commercial trailersAir brake plumbing on tractors and trailersBulkhead mount: 1/2 in DOT nylon tubing to a 1/2 in female NPT portDOT-approved heavy-duty air brake systems, FMVSS 571.106
Always confirm your year, make & model before ordering.
Part numbers
OEM & interchange numbers
6 cross-refsGates G31360-0808 Gates G313600808 Parker 66PMTBH-8-8 Parker 66PMTBH88 Parker 66PTCBH88 1873X8X8
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview
Bring a 1/2 in air line through a panel and land it on a 1/2 in female NPT port with one part, using this DOT brass push-lock bulkhead union distributed by FleetPro Parts & Tires. One side takes DOT nylon tubing push-lock; the other side gives a threaded component something solid to screw into, with the panel carrying the load instead of the tubing. Hanging a valve or gauge off an unsupported line is how a joint ends up cracked and weeping after a winter of frame flex. We stock these heavily right here in our Hanover Park, Illinois warehouse to ensure lightning-fast shipping for fleets, diesel repair shops, and owner-operators nationwide.
Tube on One Side, Thread on the Other: The Brass Bulkhead Advantage
Manufactured by Automann to Fleet Standard specifications, this brass bulkhead union pairs PLC 1/2 in DOT nylon tubing with a 1/2 in female NPT port and mounts through the bulkhead on its own nut. It is DOT-approved for heavy-duty air brake systems and meets FMVSS 571.106, so it belongs on a brake circuit rather than only on accessory plumbing.
The combination solves a very common layout problem: the run to the component is nylon tubing, but the component itself is pipe-threaded. Rather than stacking a bulkhead union, a coupling and an adapter, this fitting does the transition and the panel mount in one brass body. This part number replaces 177.13B888D in the Automann line.
At FleetPro Parts & Tires, we know that fewer joints means fewer leaks. This Automann bulkhead union is a direct replacement for highly searched industry numbers including Parker 66PMTBH-8-8 and Gates G31360-0808.
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 to 1/2 in female NPT, 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: 66PMTBH-8-8, 66PMTBH88, 66PTCBH88
- Gates Interchange: G31360-0808, G313600808
- Other Interchange: 1873X8X8
- Automann Supersession: Replaces 177.13B888D
- Automann Distributor #: 177.13B66BH8D
Technical Specifications
- Component Type: Brass Bulkhead Union, Push-Lock (PLC)
- Tube End: PLC 1/2 in DOT nylon tubing
- Port: 1/2 in female NPT
- Material: Brass
- Application: Universal
- Replaces: 177.13B888D
- Compliance: FMVSS 571.106, DOT-approved for heavy-duty air brake systems
- Product Level: Fleet Standard Aftermarket
- Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
- Tube-to-Thread in One Body: Push-lock nylon tubing on one side and a 1/2 in female NPT port on the other, with no stacked adapters in between.
- Panel Carries the Load: Bulkhead mounting supports a threaded component off the structure instead of hanging it on the air line.
- Full 1/2 in Sizing: Both the tube end and the NPT port are 1/2 in, so the transition never restricts a high-volume supply circuit.
- DOT Approved for Air Brakes: Meets FMVSS 571.106 and is DOT-approved for heavy-duty air brake systems.
- Parker and Gates Interchange: Direct replacement for Parker 66PMTBH-8-8 and Gates G31360-0808, superseding Automann 177.13B888D.
Specifications
Component Type
Brass Bulkhead Union, Push-Lock (PLC)
Tube End
PLC 1/2 in DOT nylon tubing
Port
1/2 in female NPT
Material
Brass
Application
Universal
Replaces
177.13B888D
Compliance
FMVSS 571.106, DOT-approved for heavy-duty air brake systems
UPC
889626747175
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits Universal - heavy-duty tractors and commercial trailers, Air brake plumbing on tractors and trailers, Bulkhead mount: 1/2 in DOT nylon tubing to a 1/2 in female NPT port, DOT-approved heavy-duty air brake systems, FMVSS 571.106. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Gates G31360-0808, Gates G313600808, Parker 66PMTBH-8-8, Parker 66PMTBH88, Parker 66PTCBH88, 1873X8X8.
How fast does it ship?
In-stock orders placed before 12 PM Central on business days ship the same day from our Hanover Park, IL warehouse, and typically arrive in 2 to 5 business days anywhere in the USA.
What's your return policy?
Unused items in original packaging can be returned within 30 days, backed by our 30-day money-back guarantee. If we ship the wrong part, we cover the return label and send the correct one.