DIY Dual Tire Portable Inflator Setup; VIAIR 450P

[wildtaco]

For the past eight years, I've been using a Masterflow 12v tire inflator to air up my tires. It's been with me since my first Jeep, the 07 JK. Despite its low cost of just under $45 at the time, it has consistently performed well. Recently, however, I noticed it was running unusually hot, so I decided it was time for an upgrade before it gave out during use.

Although I entertained the idea of installing an onboard air setup, I ultimately decided against it mainly due to cost. I've been eyeing the VIAIR 450P for a while and when it recently went on sale, I decided to go for it. It has an automatic shutoff function, which when combined with a pressure regulator downstream, makes it very convenient for airing up. This setup allows me to preset the desired tire pressure; once reached, the compressor shuts off automatically.
The VIAIR also has a large flat base with vibration dampeners which work very well. It's super quiet especially when compared to my previous inflator, the Masterflow.

Here's a parts list if anyone wants to build something similar. Currently just under $400 for the entire setup.
No, these aren't affiliate links.
VIAIR 450P:
https://www.amazon.com/dp/B000X9EGFS?psc=1&ref=ppx_yo2ov_dt_b_product_details
Locking valve stem chucks:
https://www.amazon.com/dp/B01BUETYNI?psc=1&ref=ppx_yo2ov_dt_b_product_details
Pressure regulator:
https://www.amazon.com/dp/B06W9HBLCM?psc=1&ref=ppx_yo2ov_dt_b_product_details
0-60PSI air gauge:
https://www.amazon.com/dp/B0087UCUR6?psc=1&ref=ppx_yo2ov_dt_b_product_details
1/4 NPT fittings kit:
https://www.amazon.com/dp/B087RKHMLQ?ref=ppx_yo2ov_dt_b_product_details&th=1
1/4 NPT Tee fitting for dual tire fill:
https://www.amazon.com/dp/B013NV7X7A?psc=1&ref=ppx_yo2ov_dt_b_product_details
25ft Polyurethane Coil Hose. (x2 for dual tire fill):
https://www.harborfreight.com/14-in-x-25-ft-professional-polyurethane-coil-hose-57644.html

The 25ft length hose gives you the ability to air up all tires without having to move the compressor. The entire setup fits (just barely) into the VIAIR bag that comes with the compressor.

When testing, I aired up two 35s from 15psi to 37psi in under 9 minutes. Not bad.

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[Trailman]

That's pretty slick, and the advantage is you can move it between vehicles quick and easy.

I must say I'm a huge fan of the Kraken + dual ARB, but I would like the mobility of this type of option.

 

[PW45]

I've got the 400P which I think is the same without the auto shut off. It's an amazing beast that works so nicely with the smart tire fill assist I just inflate until the horn honks then move tires.

 

[Rockabillyroy]

I had the 450p for many years and it worked great. Never got hot.
I did modify mine though. I snipped the cord and installed anderson power poles on both the compressor and the alligator clips that I snipped off. Then I ran a powerpole pigtail off the battery that I routed outside of the engine bay. That way, I did not have to lift the hood, just plugged the
connectors and it was ready to go.
Part of it was for convenience. Part of it was because I have friendly off-roaders in my area and if the see your hood up, they stop and ask if everything is okay. LoL.

And it was still portable in case I needed to use if for my wife's car.

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