Multi-Size AN Bulkhead Brackets - -3, -4, -6, -8 AN

Multi-Size AN Bulkhead Brackets - -3, -4, -6, -8 AN

Trying to cleanly Plumb your Fuel System, Air Ride Suspension, Oil Cooler Lines, or some other AN Plumbing Project on your Car or Truck?  These Brackets can help you do a clean and safe job. 

This version of our popular "Bulkhead Brackets" are our semi-universal units.  These feature the same external dimensions as our -8AN Brackets, but come with a -3AN sized hole in them.  The purpose of this is so you can mix & match for your situation.  Have a -8AN Feed Line on your fuel system but a -6AN Return line?  Drill the two holes to your desired size!  Have a single -6AN Feed Line and a single -3AN Brake Line you need to route to the rear of a car? Drill the one hole for your fuel line and you are ready to plumb them side by side! 

After years of disatisfaction with the available options for connecting Hard Lines to Flex Lines on Custom Car Builds, Alan Mandic, HotRodHippie, designed these brackets and has been using them ever since. 


Constructed of laser cut and press brake bent 5052 Aluminum. Each has 2 holes to accept -8AN Bulkhead fittings**  side by side for feed and return, or other uses. Has has 3 mounting holes sized for 1/4" or #10 sized bolts/screws. 


These can be screwed to Sheetmetal, Bolted to Frame Rails, or Welded directly to any compatible aluminum components (fuel cell, etc).  Brackets can also be cut apart to be used as single hole brackets for solo lines.  Bracket width is specifically designed to fit on a frame rail minimum 3"(76.2mm) or inside of the of the recessed portion of a classic muscle car or pickup truck C channel frame.  Three mounting holes allow for mounting flexibility (2 bolts recommended per bracket.). Excellent for race car, restomod, classic car restoration, street rod, hot rod, or modern street car and truck builds.


Can accept Bulkhead fittings of various angles, though attention does need to be paid to interference between the two with anything other than straight fittings.


  • 2.99" Wide (76.11mm)
  • 1.54" Tall (39.10mm)
  • .125" Thick (3.20mm) 5052 Aluminum



  • These are sold as individual brackets only. No fittings or hardware are included.
  • Holes are sized for -3AN fittings (.388" / 9.86mm), to use larger sized fittings you must drill one or both of the holes to your desired sizes!


** Fitting Tested (NOT INCLUDED): 

  • Redhorse Performance
  • Fragola
  • Russell Performance
  • Vibrant
  • Evil Energy
  • Earls Plumbing
  • Aeroquip

Want to learn more about plumbing Custom Hard Lines on your custom build?  Check out THIS video from the HotRodHippie: