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Brass Push-Lock 3-Way Air Adapter - M22 x 1.5 Thread x 3/8in x 5/8in PLC - IHC 3819958C1 177.13B79106M22
Brass Push-Lock 3-Way Air Adapter - M22 x 1.5 Thread x 3/8in x 5/8in PLC - IHC 3819958C1 177.13B79106M22
Automann

Brass Push-Lock 3-Way Air Adapter - M22 x 1.5 Thread x 3/8in x 5/8in PLC - IHC 3819958C1 177.13B79106M22

In stock
SKU: 177.13B79106M22
$28.19
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Fitment

Fits these trucks

International - air brake plumbingAir brake plumbing on tractors and trailersM22 x 1.5 metric port feeding 3/8in and 5/8in air lines
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

1 cross-ref
IHC 3819958C1
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

Land two different air line sizes on one metric port with this DOT brass push-lock 3-way adapter distributed by FleetPro Parts & Tires. It takes an M22 x 1.5 thread on the port side and gives you a 3/8in PLC tube end and a 5/8in PLC tube end, so an International air brake circuit gets both its supply and its branch off a single fitting instead of a stack of adapters. Every extra adapter in a stack is another sealing surface that can weep, and a stacked joint is exactly the leak that keeps a compressor cycling and airs a truck down in the yard. Manufactured by Automann to Fleet Standard specifications, 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.

One Port, Two Line Sizes: The 3-Way Metric Adapter Advantage

Both tube ends are push-lock (PLC), so DOT nylon air brake tubing seats with a straight push and locks โ€” no ferrules, no compression nuts, and a clean disconnect when a line has to come back apart for service. Running 3/8in and 5/8in off the same body means the large supply and the smaller branch share one sealed metric thread rather than a tee bolted onto a reducer bushing.

The brass body resists the water, compressor oil carryover and winter road salt that circulate through a heavy-duty air system, and the adapter is DOT-approved for heavy-duty air brake systems and meets FMVSS 571.106, so it is legal in a brake circuit and not just a shop air part. At FleetPro Parts & Tires, we know a single correct adapter beats three that almost fit. This Automann adapter replaces 177.55958 and is a direct replacement for the highly searched industry number IHC 3819958C1.

Vehicle Fitment & Compatibility

This DOT brass adapter is intended for the following commercial application:

  • Make/Model: International
  • System: Air brake plumbing on tractors and trailers
  • Thread: M22 x 1.5 metric port
  • Tube Ends: 3/8in PLC and 5/8in PLC
  • Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

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

  • IHC Interchange: 3819958C1
  • Automann Supersedes: 177.55958
  • Automann Distributor #: 177.13B79106M22

Technical Specifications

  • Component Type: 3-Way Metric Thread Adapter, Push-Lock (PLC)
  • Thread: M22 x 1.5
  • Tube Ends: 3/8in PLC and 5/8in PLC
  • Body Material: Brass
  • Application: International
  • Replaces: 177.55958
  • Compliance: DOT-approved for heavy-duty air brake systems, meets FMVSS 571.106
  • UPC: 889626764110
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
  • Two Line Sizes, One Port: A 3/8in and a 5/8in push-lock tube end share a single M22 x 1.5 thread instead of a tee stacked on a reducer bushing.
  • Fewer Sealing Surfaces: Replacing an adapter stack with one body removes the extra joints that weep and keep the compressor cycling.
  • Push-Lock Tube Ends: DOT nylon air brake tubing seats with a straight push and locks, with no ferrules or compression nuts to manage.
  • Correct M22 x 1.5 Metric Thread: Matches the International metric port so nothing has to be forced or cross-threaded on installation.
  • DOT / FMVSS 571.106 Compliant: Brass construction approved for heavy-duty air brake systems, not just shop air plumbing.
Specifications
Component Type
3-Way Metric Thread Adapter, Push-Lock (PLC)
Thread
M22 x 1.5
Tube Ends
3/8in PLC and 5/8in PLC
Body Material
Brass
Application
International
Replaces
177.55958
Compliance
DOT-approved for heavy-duty air brake systems, meets FMVSS 571.106
UPC
889626764110
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits International - air brake plumbing, Air brake plumbing on tractors and trailers, M22 x 1.5 metric port feeding 3/8in and 5/8in air lines. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with IHC 3819958C1.
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.