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Brass Reducer Bushing - 1/2in NPT Male x 3/8in NPT Female DOT Air Brake Fitting - Replaces Eaton 3220X8X6 Parker 209P86 177.9110DC
Brass Reducer Bushing - 1/2in NPT Male x 3/8in NPT Female DOT Air Brake Fitting - Replaces Eaton 3220X8X6 Parker 209P86 177.9110DC
Automann

Brass Reducer Bushing - 1/2in NPT Male x 3/8in NPT Female DOT Air Brake Fitting - Replaces Eaton 3220X8X6 Parker 209P86 177.9110DC

In stock
SKU: 177.9110DC
$1.53
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Fitment

Fits these trucks

Universal - Class 8 tractors and trailersAir brake plumbing on tractors and trailers3/8in fitting into a 1/2in portCopper, brass and iron pipe
Always confirm your year, make & model before ordering.
Part numbers

OEM & interchange numbers

2 cross-refs
Eaton 3220X8X6 Parker 209P86
Direct 1-to-1 replacement for every number above. Tap any number to copy.
Overview

This is the bushing that belongs on a brake circuit. The Brass Reducer Bushing distributed by FleetPro Parts & Tires steps a 1/2in male NPT thread down to a 3/8in female NPT thread and meets FMVSS 571.106 and DOT requirements for brake circuits - the line that separates a fitting you can legally put in air brake plumbing from one you cannot. An uncertified adapter in a brake line is an inspection finding at best and a failed circuit at worst. 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.

DOT Rated Reduction: The 1/2in to 3/8in NPT Bushing Advantage

The body is brass and the form is a pipe reducer bushing, male NPT to female NPT, for use with copper, brass and iron pipe. At 0.08 lbs it adds nothing to the port it sits in, and taking 1/2in down to 3/8in in one piece keeps the joint count down - which matters most on the brake side, where every joint is somewhere air can escape.

Brass seals on tapered pipe thread without galling and stays serviceable through the salt and vibration that seize plated steel into a port. Because it carries the FMVSS 571.106 rating it goes on the brake side with confidence instead of being relegated to accessory plumbing. This Automann bushing is a direct replacement for highly searched industry numbers including Eaton 3220X8X6 and Parker 209P86, and it supersedes Automann 177.9017.

Vehicle Fitment & Compatibility

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

  • Make/Model: Universal - Class 8 tractors and trailers
  • System: Air brake plumbing on tractors and trailers
  • Connections: 1/2in male NPT to 3/8in female NPT
  • Pipe Types: Copper, brass, iron pipe
  • Component Group: Air Brake & Wheel / Air System Manifolds & Valves

Direct Replacement & Cross-Reference Numbers:

This Automann reducer bushing serves as a direct replacement for the following part numbers:

  • Eaton Interchange: 3220X8X6
  • Parker Interchange: 209P86
  • Automann Supersedes: 177.9017
  • Automann Distributor #: 177.9110DC

Technical Specifications

  • Component Type: Pipe (NPT) reducer bushing, male NPT to female NPT
  • Male Thread: 1/2in NPT
  • Female Thread: 3/8in NPT
  • Body: Brass
  • Use: Copper, brass, iron pipe
  • Application: Universal
  • Compliance: FMVSS 571.106 / DOT
  • Weight: 0.08 lbs
  • Package Dims: 1 x 0.875 x 0.812 in
  • Warranty: 1-Year FleetPro Warranty
  • UPC: 889626446740
  • Product Level: Fleet Standard Aftermarket
  • Brand: Automann (Distributed by FleetPro Parts & Tires)
Key features
  • DOT Brake-Circuit Rated: Meets FMVSS 571.106 and DOT requirements, so it is legal to put in air brake plumbing rather than accessory lines only.
  • One-Piece 1/2in to 3/8in Step: Takes the whole reduction in a single body, keeping the joint count down where every joint is a place air can escape.
  • Brass Body: Seals on tapered pipe thread without galling and stays serviceable through the salt and vibration that seize plated steel into a port.
  • Works With Copper, Brass and Iron Pipe: Rated for the pipe materials already used across truck and trailer plumbing.
  • Direct Interchange: Replaces Eaton 3220X8X6 and Parker 209P86, and supersedes Automann 177.9017.
Specifications
Component Type
Pipe (NPT) reducer bushing, male NPT to female NPT
Male Thread
1/2in NPT
Female Thread
3/8in NPT
Body
Brass
Use
Copper, brass, iron pipe
Application
Universal
Compliance
FMVSS 571.106 / DOT
Supersedes
177.9017
Weight
0.08 lbs
Package dims
1 x 0.875 x 0.812 in
Condition
New
Warranty
1-Year FleetPro Warranty
UPC
889626446740
Product Level
Fleet Standard Aftermarket
Questions
Will this fit my truck?
This part fits Universal - Class 8 tractors and trailers, Air brake plumbing on tractors and trailers, 3/8in fitting into a 1/2in port, Copper, brass and iron pipe. Always confirm your year, make and model before ordering.
What part numbers does it replace?
Yes. It is a direct replacement that interchanges with Eaton 3220X8X6, Parker 209P86.
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.