4th gen ARB onboard compressor mounting bracket-CHEAP how to

This has been up for awhile on T4R, but I figured I should transfer it over here.

Hello I have never been very good at these instructional threads but I'm giving it another shot. I searched and didn't see any cheap alternatives for a DIY compressor bracket. I would imagine someone has done something similar to this in the past, but I haven't seen these galvanized nail plates used. I did not remove the CAI for this install. All of this hardware I picked up at Home Depot for less than $25.
Simpson Strong Tie galvanized nail plate 16-5/16" x 5"and 1-1/4" x 9" strap
Note: All Hardware is Stainless except Nail Plate, Strap and PVC.

x2 3/8" x 2-1/2" Philips pan head bolt
x2 3/8" - 16 Nylock nuts
x2 3/8" Fender Washers
x2 3/8" Standard Washers
x2 M6 x 1.0 screws around a 1/2" long
x2 10-32 Screws
x2 10-32 Nuts
x2 #10 Standard Washer
x2 #10 Lock Washer
x2 1/2" PVC Couplings
Black Spray Paint

This set up could probably be modified for an ARB Twin or other . I personally don't need a tank so this is just a basic mount for a stand alone ARB Single CKMA compressor.

First I bent the Nail Plate so 10 1/2" will be the platform and the rest will be an upright support fastened to the fender.

Next I drilled holes in the strap and nail plate and fastened the strap to the nail plate with the 10-32 hardware. I then cut about an 1 1/2" off the strap to clear the CAI.

Then I drilled a hole in the strap for the M6 mounting bolt and set the nail plate and strap on the fender well behind the CAI and scouted out the best mounting options. Here is what I came up with. The upright pass. fender hole was preexisting in the plate.
The yellow arrow was a preexisting hole I decided to use, the green arrow is a 3/8" hole I drilled, and the red arrows in this pic and the next are M6 x 1.0 preexisting holes that are bossed into the fender and fender well. I had a couple of these screws laying around from my 5th gen. These are the four mounting points I decided to use and yours may have to vary a little bit depending on what components you use and where you want it located.


Next I set the Plate in it's position and loosely fastened the M6 bolts to get an accurate mark on the bottom through the fender well


Marking the bottom of the plate through the fender well

I then set the compressor in place to decide how I wanted to position the unit on the galvanized plate and marked the

Up Down Air ARB Skid Plate Mounting Bracket for 2018 Jeep Wrangler JL

ARB mounting plate.

Then I pulled the plate and drilled these 3/8" holes for mounting through the fender well.

I then used a #4 allen and removed the 4 ARB mounting screws for the bracket to the compressor and removed it to mark it's mounting holes.




I drilled those four holes and painted the plate.

This is how the bolts thru the fender will be placed with pvc spacers and the plate will fasten down on top of these.

After the paint dried I fastened the to the plate using the supplied hardware.

I then loosely fastened the plate with 3 of the 4 fasteners and then installed the spacers one at a time.

These are the thru bolts on the wheel side under the fender well.

Here is everything snugged down and ready for the compressor. You will need to replace the 4 #4 allen screws that fasten the unit to the .

Here is the compressor installed and ready for the wiring.

I have also installed one of these on my 5th gen but it was a little more involved because the fender well has a few differences, so I didn't take any pictures of the install. It has worked fine for several years now.
Here is the 5th gen installed.

Good Luck and hope this thread works for you or at least gives you some new ideas.