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PLC Reducing Union Connector - DOT 1/2" x 3/8" Air Brake - SMC KV2H11-13 177.12C6286
PLC Reducing Union Connector - DOT 1/2" x 3/8" Air Brake - SMC KV2H11-13 177.12C6286
Automann

PLC Reducing Union Connector - DOT 1/2" x 3/8" Air Brake - SMC KV2H11-13 177.12C6286

In stock
SKU: 177.12C6286
$9.02
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Fitment

Fits these trucks

Universal - Class 8 trucks and commercial trailersAir brake plumbing on tractors and trailersJoins 1/2 in DOT air brake tubing to 3/8 in in one fitting
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

3 cross-refs
SMC KV2H11-13 SMC KV2H1113 Sloan S762PMT-6-8
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

Step a 1/2 in air line down to 3/8 in with one fitting instead of three with this PLC Reducing Union Connector distributed by FleetPro Parts & Tires. One side takes 1/2 in DOT air brake tubing and the other takes 3/8 in, so a change in line size happens in a single push-to-connect joint rather than a union, a bushing and a second union stacked together. Every joint in that stack is another leak path to chase with soapy water, and another place for the run to get stiff and chafe. 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 Fitting, Two Sizes: The 1/2 in x 3/8 in Reducing Union Advantage

This is a push-to-connect (PLC) DOT air brake reducing union with a composite body and brass collet, with 1/2 in and 3/8 in tube ends on the one body. It is the fitting to reach for when a repair or an accessory installation has to meet the existing plumbing at a different size โ€” tying a 3/8 in branch into a 1/2 in supply run, or picking up where a previous owner changed line sizes mid-frame and left an adapter stack behind.

Assembly is the same on both ends: cut the tubing square, push it fully home, and tug-test before airing the system back up. There is no flare to form and no compression nut to crush either diameter. Built for air brake plumbing on tractors and trailers, it meets FMVSS 571.106 / DOT requirements for brake circuits. At FleetPro Parts & Tires, this reducing union is a direct replacement for highly searched industry numbers including SMC KV2H11-13 and Sloan S762PMT-6-8.

Vehicle Fitment & Compatibility

This DOT push-to-connect reducing union uses a universal design intended for the following commercial applications:

  • Make/Model: Universal - Class 8 tractors, commercial trailers and vocational trucks
  • System: Air brake plumbing on tractors and trailers
  • Tube Ends: 1/2 in and 3/8 in push-to-connect (PLC), reducing union
  • Compliance: FMVSS 571.106 / DOT requirements for brake circuits

Direct Replacement & Cross-Reference Numbers:

This Automann reducing union serves as a direct replacement for the following part numbers:

  • SMC Interchange: KV2H11-13, KV2H1113
  • Sloan Interchange: S762PMT-6-8
  • Automann Distributor #: 177.12C6286

Technical Specifications

  • Component Type: Push-to-Connect (PLC) Reducing Union Connector, DOT Air Brake
  • Body: Composite with Brass Collet
  • Tube Ends: 1/2 in and 3/8 in (reducing union)
  • Compliance: FMVSS 571.106 / DOT
  • Weight: 0.05 lbs
  • Package Dims: 5 x 3.25 x 0.95 in
  • UPC: 889626515675
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
  • Two Sizes, One Joint: Takes 1/2 in tubing on one end and 3/8 in on the other, replacing a union-bushing-union stack with a single fitting.
  • Fewer Leak Paths: One connection instead of three means fewer places to hunt with soapy water when the tanks drop overnight.
  • Brass Collet Grip: The brass collet holds both tube diameters against system pressure inside a light composite body.
  • DOT Air Brake Compliant: Meets FMVSS 571.106 / DOT requirements for brake circuits on tractors and trailers.
  • Direct SMC And Sloan Replacement: Interchanges with SMC KV2H11-13 and Sloan S762PMT-6-8.
Specifications
Component Type
Push-to-Connect (PLC) Reducing Union Connector, DOT Air Brake
Body
Composite with brass collet
Tube Ends
1/2 in and 3/8 in (reducing union)
Compliance
FMVSS 571.106 / DOT
Weight
0.05 lbs
Package Dims
5 x 3.25 x 0.95 in
UPC
889626515675
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits Universal - Class 8 trucks and commercial trailers, Air brake plumbing on tractors and trailers, Joins 1/2 in DOT air brake tubing to 3/8 in in one fitting. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with SMC KV2H11-13, SMC KV2H1113, Sloan S762PMT-6-8.
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.