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  1. Tire Inflator
  2. Wheel Masters
  3. Inflation Kit
  4. 16 - 19-1/2 Inch Dual Tires
  5. Hub Mount
Wheel Masters 4-Hose Inflation Kit - 16" to 19-1/2" Dually - Hub Mount - 135-Degree Bend

Wheel Masters 4-Hose Inflation Kit - 16" to 19-1/2" Dually - Hub Mount - 135-Degree Bend

Item # WM8001-135
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These stainless-steel-wrapped hoses with a 135-degree bend take the hassle out of inflating and checking the air pressure of dual tires. Kit is designed for steel or aluminum rear wheels with wheel liners. Hardware included. Lowest Prices for the best tire inflator from Wheel Masters. Wheel Masters 4-Hose Inflation Kit - 16" to 19-1/2" Dually - Hub Mount - 135-Degree Bend part number WM8001-135 can be ordered online at or call 1-833-496-1390 for expert service.
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  • Reviews (51)
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Wheel Masters Tire Inflator - WM8001-135

  • Inflation Kit
  • 16 - 19-1/2 Inch Dual Tires
  • Hub Mount
  • Wheel Masters

These stainless-steel-wrapped hoses with a 135-degree bend take the hassle out of inflating and checking the air pressure of dual tires. Kit is designed for steel or aluminum rear wheels with wheel liners. Hardware included.


  • Inflation kit lets you easily check air pressure and inflate your vehicle's dually tires
    • Relocates inner tire's valve stem to outer wheel and extends valve stem on outer tire
    • No crawling on the ground or reaching for valve stem on inner tire
  • Stainless-steel-wrapped, 2-ply rubber tubing with nylon braiding
    • Durable wrapping helps prevent hoses from cracking or leaking
  • Simple hub-mount installation with included hardware
    • Hoses attach to valve stems on inner and outer tires
    • Brackets mount on steel or aluminum rear wheels with wheel liners
  • 4 Hoses included
  • Made in the USA


  • Application: inner and outer tires on 16", 16-1/2" and 19-1/2" dual wheels
  • Hose bend: 135 degree
  • 1-Year warranty

Checking and maintaining proper tire pressure is important for ensuring a safe, smooth ride and maximizing fuel economy, but it can be a real pain with dually tires. The Wheel Masters inflation kit takes the hassle out of checking air pressure and inflating your dual tires.

Two hoses extend the valve stem location of the inner tires to the outer wheels. This means no more crawling around on the ground or blindly reaching for the valve stem on the inner tire. Two 135-degree hoses are also included to make it easier to access the valve stems of the outer tires. And the stainless steel wrapping on the hoses helps prevent them from cracking or leaking.

Hub-Mount Installation

Inflation Hose Kit Hub Mount

The dually inflation kit is designed for steel or aluminum rear wheels with wheel liners.

  1. Install 2 of the included brackets on the hub of each outer wheel. Make sure to align the brackets with the valve stem and a hand hole.
  2. Attach the hoses with straight valve extenders to the valve stems on the inner tires.
  3. Attach the hoses with 135-degree-angled extenders to the valve stems on the outer tires.
  4. Run the hoses to the outer wheels and attach the hoses to the hub-mounted brackets.
  5. Screw on the valve caps.

8001 Dual Tire Inflators by WheelMasters - 16", 16.5", 19.5" Dual Wheels - 4 Hoses - Hub Mount - Stainless Steel - 135-Degree Bend

Customer Reviews

Wheel Masters 4-Hose Inflation Kit - 16" to 19-1/2" Dually - Hub Mount - 135-Degree Bend - WM8001-135

Average Customer Rating:  4.6 out of 5 stars   (51 Customer Reviews)

These stainless-steel-wrapped hoses with a 135-degree bend take the hassle out of inflating and checking the air pressure of dual tires. Kit is designed for steel or aluminum rear wheels with wheel liners. Hardware included.


The hose inflation kit allowed me to install flow through sensors on the rear wheels of my motorhome. They would also make it easier to check pressure and add air. I had to borrow a right angle drill to be able to mount the right angle brackets on the hub. But once in place these work very well.


We have had no issue with air leaking from valves.


Perfect for the job of inflating the inner wheels of a dually.


2016 F350 duallie.
This air valve extension
kit solved my issue. It was a battle getting air into my inners through the stock stems. I bought different chucks and a couple worked... ok. OK doesn't cut it in the middle of winter in NH so I wanted a good solution.
This was it. Valves are right up front for easy access. Doesn't look half bad either.

You would think the downside is that there is no balancing valve like pricier units. I have to fill each tire individually. Not really a bad thing since I run the inners a little lower when the truck is empty, most of the time. Bump them up even with the outers when hauling. Couldn't do that with a balancing valve.

So a year later and etrailer reached out to me to update my review after a years use. Well, I havent thought about the kit much since I put it onto my duallie. I think that sums it up. They work. I dont have to visit with them except to make sure my pressures are where I want them and when I look at my wheels I like what I see. Good price, good kit, good results. Win.
cableup - 02/07/2021


Installed to replace an existing set on an F53 chassis with 19.5” tires. Lengths of the extenders is perfect for these wheels. They have good stem seals as tires maintain pressure for many months. Only draw back is the routing puts them in contact with wheel simulator cutouts which over many miles will start to cut into the metal sleeve. This was the reason I decided to replace the original set.


I have a 1997 Ford F-350 Ford Dually with wheel simulators. Can't check or add air to tires with the simulators. Saw your wheel masters inflation kit. I ordered the 135 degree kit. Broke the ends off the bent hoses trying to get them to fit thru the rim & simulator hole. Re-ordered the 90 degree WM8001 kit. Found out the hard way that the installer of my tires used 4" rubber valve stems. This kit works great if you use a 4" straight valve stem on the inside wheel and a 1 1/4" valve stem on the outside wheel (bolt thru wheel valve stem). The correct valve stems are the secret to making this kit work. Completed installing the kit today and am completely satisfied.


Had them installed today and we expect them to really help us monitor and care for our tires. Thank you!!!


bought these for my dually easy install and great quality and have not had a leak since i installed them


Installation was relatively easy. Initially I thought I may need to remove the outer wheel assembly to access the inner dually. I was able to squeeze my fat hand through and thread the hose on without much of a fight. The stiff hoses are a little tough to manipulate into place to determine where to mount the brackets. I opted to drill my decorative axle cover and pop rivet them in place. I did foul up on one bracket though. The instructions stated for my Ford to pop rivet from the inside. Obviously this is to give more surface area on the plastic cover. I drilled the last bracket holes without paying attention and one hole was too close to the lug attaching point. No way to get the rivet gun on that one. Had to install it from the outside. If it gives out I'll re-do it with a back up washer. Just pay attention when/if you drill yours. MAKE SURE OF YOUR CLEARANCE! So far I like these things!


Easy access to check and fill dual tiers


I got exactly what I ordered and delivered 4 days early. That's fast service. Thank you etrailer.
I haven't installed them yet, but I know they'll fit perfect.


The only reason I did not give a 5 star review is I had to make a slight modification to the outter wheel hoses. On my 2017 Ford F-450, the 135-degree bend did not allow me to connect the hose to the existing valve stem. I used a vise and carefully adjusted the bend to approx 140 degrees on each hose and they worked fine. I also recommend you use longer pop rivets and use backers on them to ensure long term durability of the mount. Now, the the kit itself: I really like it. After install, I was able to check the tire pressure and easily inflate both sets of duals to the recommended 80 psi. With this kit, maintain proper air pressure is going to be much easier. I expect a long service life from this kit and I'm very happy with the purchase.


Fit was perfect for our Solera 24R RV


The angled hose fitting DOES NOT fit 2017 F450 dually. It's not bent
tight enough to fit in the hole in the wheel.

I did use the straight hose and it's ok.


Same as always, great service fast shipping and great product.


Bought these to replace a set that I've had on my truck for over 10 years. Guess they just finely wore out, but never leaked once the whole time. These make airing up your dually's super easy.


The product I received is exactly what I need and ordered. I found your customer service was excellent and I liked getting emails on the order status as it was processed which included names of staff members that were working on the order.

The only issue I had is that the product was forced into a box that was too small and as they bent the plastic encased product, it popped open and some of the items in the product fell into the box. I was fortunate that I didn't lose any items, but it could have happened.


Makes checking air pressures very easy. Having a class B on a Sprinter chassis, the outside tires were extremely difficult to easily handled. Not difficult to install.

My previous comments still apply
Robin - 06/16/2019


Product was exactly as described and a great addition to my motorhome.


These were easy to install and worked great. Would recommend these.


We have ordered from many times over the past 6 years and have always had positive experiences. We receive parts quickly and in good condition. The prices are reasonable and customer service is excellent. We will continue doing business here. Thank you.


Very slow leak over winter storage. Caught it before tires were damaged. May disconnect next off season.
Its almost impossible to get the inner tires without these units so kinda stuck in the middle. Seems well built otherwise.



I am very happy with how easy they where to install and how great they look.
Would recommend these for your rig.


Really simplifies checking air pressure on the dual rear wheels.

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