Brass Push-Lock Male Connector - 3/8" Tube x M16x1.5 Air Brake Fitting - Parker 68PTC-6-MA16 68PTC6MA16 177.13B686M16

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SKU: 177.13B686M16
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Fitment

Fits these trucks

Universal - Class 8 tractors, commercial trailers and heavy-duty equipmentUniversal air brake plumbing on tractors and trailers3/8 in tube end to an M16x1.5 thread endDOT brake circuits - meets FMVSS 571.106
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

2 cross-refs
Parker 68PTC-6-MA16 Parker 68PTC6MA16
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

When the port is M16x1.5 and the line is 3/8 in, this is the one-piece answer. The Brass Push-Lock Male-to-Male Connector from Automann carries a 3/8 in tube end on one side and an M16x1.5 thread end on the other, so a full-size air line lands on a large metric port without an adapter stack underneath it. Guessing at a metric thread is how ports get cut and how a quick line repair turns into a valve replacement. 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.

Large Metric Port, One Piece: The 3/8 in x M16x1.5 Advantage

The male-to-male layout is what keeps this repair clean. There is no bushing between the fitting and the port and no ferrule on the tube, so the assembly is short, light and has exactly one sealing thread to look after. In a brake circuit that is the whole argument: every joint you delete is a joint that cannot weep at three in the morning. Brass construction handles the salt, condensate and heat cycling under a chassis without seizing into the housing.

The push-lock end takes square-cut 3/8 in tubing by hand, so the line can be rebuilt with a tubing cutter and nothing else. This is a DOT-approved brass fitting for air brake tubing and it meets FMVSS 571.106 requirements for brake circuits, which is what separates it from a general-purpose pneumatic fitting. Automann builds it to Fleet Standard specifications for universal air brake plumbing.

This connector is a direct replacement for highly searched industry numbers including Parker 68PTC-6-MA16 and Parker 68PTC6MA16. Measure the port before ordering - metric threads are easy to mix up by eye, and this connector is cut for M16x1.5.


Vehicle Fitment & Compatibility

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

  • Make/Model: Universal - Class 8 tractors, commercial trailers and heavy-duty equipment
  • System: Universal air brake plumbing on tractors and trailers
  • Tube Size: 3/8 in tube end
  • Port Thread: M16x1.5 thread end
  • Compliance: Meets FMVSS 571.106 / DOT requirements for brake circuits
  • Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

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

  • Parker Interchange: 68PTC-6-MA16, 68PTC6MA16
  • Automann Distributor #: 177.13B686M16

Technical Specifications

  • Component Type: Push-to-connect (PLC) Male to Male Connector, DOT air brake
  • Configuration: Male to Male Connector
  • Tube End: 3/8 in
  • Thread End: M16x1.5
  • Body: Brass
  • Application: Universal
  • Compliance: DOT approved, FMVSS 571.106
  • Grade: Fleet Standard
  • UPC: 889626691157
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
  • Male-to-Male, No Adapter Stack: A 3/8 in tube end and an M16x1.5 thread end in one body means one sealing thread to look after instead of three.
  • Correct Large Metric Thread: Cut for M16x1.5 so it seals on thread form rather than cutting a port that a wrong fitting was forced into.
  • Push-Lock Tube End: Square-cut 3/8 in tubing pushes in by hand and locks in the collet, so the line can be rebuilt with a tubing cutter alone.
  • Brass Under the Chassis: Handles salt, condensate and heat cycling without seizing into the housing the way plated steel does.
  • DOT Air Brake Rated: Meets FMVSS 571.106 requirements for brake circuits - not a general-purpose pneumatic fitting.
Specifications
Component Type
Push-to-connect (PLC) Male to Male Connector, DOT air brake
Configuration
Male to Male Connector
Tube End
3/8 in
Thread End
M16x1.5
Body
Brass
Application
Universal
Compliance
DOT approved, FMVSS 571.106
Grade
Fleet Standard
UPC
889626691157
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits Universal - Class 8 tractors, commercial trailers and heavy-duty equipment, Universal air brake plumbing on tractors and trailers, 3/8 in tube end to an M16x1.5 thread end, DOT brake circuits - meets 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 Parker 68PTC-6-MA16, Parker 68PTC6MA16.
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.