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  • Single silver hydraulic adapter fitting displayed on a white background, featuring male threads on both ends with a hex center for tightening and secure fluid line connection.
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Adapter Fitting – 6 AN Return – GM/Ford Hydro-Boost

Adapter Fitting – 6 AN Return – GM/Ford Hydro-Boost

$15.00
$15.00
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Part Number: H6400-6-2

Hooking up a Hydro-Boost brake unit doesn’t have to be a headache. This 6 AN return line adapter threads straight into GM and Ford Hydro-Boost units so you can run AN hose the right way—clean, simple, and built to last. No leaks, no nonsense—just the right part for the job.

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About:About:

Why you’ll love it

  • Perfect Fit: Threads right into GM and Ford Hydro-Boost units.
  • AN Ready: Converts return port to -6 AN for easy plumbing.
  • Leak-Free: Precision-machined for a reliable seal.

Tech InfoTech Info

Heads‑up for installers

  • Clean the threads before install. 
  • Use proper AN hose and fittings for best results. 
  • A dab of thread sealant is your friend here.

Fitment

  • GM Hydro-Boost brake units 
  • Ford Hydro-Boost brake units 

Specs

  • Size: -6 AN male
  • Material: Steel with corrosion-resistant finish
  • Threads: Compatible with GM/Ford Hydro-Boost return port

What’s included

(1) 6AN Return Line Adapter Fitting

California Prop 65 Warning

California Prop 65 Warning

This product can expose you to chemicals including lead and di (2-ethylhexyl) phthalate, which are known to the State of California to cause cancer, birth defects or other reproductive harm.

For more information, go to www.P65Warnings.ca.gov