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Firestone Coil-Rite Air Helper Springs Installation - 2008 Chevrolet Avalanche

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How to Install the Firestone Coil-Rite Air Helper Springs on a 2008 Chevrolet Avalanche


Speaker 1: Today on our 2008 Chevrolet Avalanche, we're going to be taking a look at the Firestone Coil-Rite Air Helper springs, part number F4108.Here's what it looks like our airbags installed. It's going to allow you have an additional 500 to 1000 pound of support on your vehicle. This does not add to the overall weight your vehicle can support, but will help maintain ride height and stability when those loads are applied to the vehicle. So you do still want to check your vehicle's owner's manual and be sure you're not exceeding the capacities specified in there.The main reasons you're going to want airbags on your vehicle is if you're hauling some heavy loads in the back, and it's causing the rear end to sag. These airbags will keep the ride height at the normal value when under a heavy load. This is great because when you got a heavy load in the back it can cause your headlights to aim high as the rear sags, and the front pops up.

It could also cause stability issues, tire wear as the front raises up. Camber can become positive and wear on the outer edges. Camber angle is the relationship between the top and bottom of the tire. If the top is further out away from the vehicle, your camber is positive. If the top is further in towards the fender liner, it's negative.

A positive camber angle with cause wear on the outer edge of your tire.Now when compared to other load helping suspension components on the market, these are going to provide a more comfortable ride in comparison to your rubber inaudible 00:01:18 styles. They're simple to install. Now let's take it out on our test course and show you how it performs.First, we're going to enter into the slalom, which is a side to side motion. You'll notice that with these installed, you'll have a significantly less amount of body roll.On the next part of our course, we're going to be going over speed bumps. You'll notice with the airbags installed, there'll be less suspension travel, and the rear end won't be sagging down as much.

You'll notice that the vehicle doesn't sway side to side as much. Now as the test course has shown, this will improve our stability, handling, and braking, and give us the safety we need when pulling a heavy load.To begin our installation, we're going to need to collapse our airbag. To do that, you're going to want to cut about three inches from the length of the tubing provided in the kit. A tubing tool is best so that way it's cut flat, and you have a nice even cut. Insert that into the end of their airbag, and then roll it up.Once you've got it rolled up, take the red tab provided in the kit and put it in the end of your hose.

This will keep it collapsed, so we can install it more easily on the vehicle.Now we'll take our airbag with the hose end pointing up for our Avalanche, and we're going to slide it in towards the bottom coil. Then just work your airbag in around and up towards the top of the coil.Now if you're having trouble getting it in by hand, you can use a blunt object such as a half inch extension to help work it in there. You don't want to use any sharp objects as it may puncture the bag and render it useless.Once you've got the airbag fully in the coil, you're going to want to remove your plug on your tube. This will allow it to expand, so you can work it around and get it fully installed and untangled.Now that our airbag's in place, we can remove our tubing in the top. To remove our air hose, you're going to want to find a wrench that's a similar thickness to your hose. We're going to use a seven millimeter. You'll press down on the fitting at the top of the airbag, and then use a pair of pliers to pull up on the hose. That'll release it from your airbag.Now, because it was hard to see in our last shot, we've got a similar fitting here, and our same piece of tubing. When pressed into the fitting, it locks into place and cannot be removed.Now, you can remove the hose by pressing down on the ridged collar and pulling the hose out. This is the collar that we we're referring to.Now, we've already gone ahead and done this, but you're going to want to cut your hose provided in the kit in half. That way you've got an equal length to route to the rear of the vehicle and trim it down later.With your hose cut in half, you'll take one end of it, route it over the top of the coil spring and down through the hole in the rubber bumper there. Then you'll take the blue rubber spacer provided in the kit, slide it on top of your airbag, route your hose through the middle, and then press this hose into the fitting on your airbag. Want to make sure your hose is fully inserted. It'll slide right in. Once it's bottomed out, you'll see the airbag start to push downward. Then pull upward on your hose to make sure that it's secure.Now we need to take the airbag and move it up to the top so it seats against the top of the coil spring mount. This is best done with a blunt object because you can kind of pry underneath of it to push it upward.Now, we've gone ahead and routed our hosing. We ran it up underneath the bed, above the frame, following our factory wiring, and zip tying to that location, up to our bumper here where we're going to be mounting our inflation fitting.Now your inflation fitting can be mounted anywhere on the rear bumper. We're going to go ahead and mount ours on this side bracket. That's way it's underneath the vehicle and hidden and can't be seen from the outside so it won't detract from the look of vehicle. Go ahead and use a little lubricant and drill out a hole with a 5/16 inch socket to mount your fitting.Now that we've got our mounting location prepared, take your inflation fitting, place one of the flat washers on it, slide it through your mounting location, put another flat washer on it, and thread on the provided nut. You can then tighten these down using two 12 millimeter wrenches.Now we're going to go ahead and cut our hose to length. Now you might want to give yourself a little excess in case in the future you need make any repairs or leaks. We're going to cut the hose flat using our hose cutting tool here. Now just like we did with our airbag, this airline is installed by simply pushing it in to the back side of the fitting. Now it's locked into place. There's a cap to cover your inflation fitting.Now it is the same process on your passenger side, however, there's going to be two heat shields that need to be installed on the exhaust to prevent any heat damage to your airbag. Now I've already gone ahead and prepared our heat shields by bending the brackets in this manner so they can be mounted to the exhaust with hose clamps.There are four hose clamps provided in the kit. I'm going to go ahead and undo the hose clamp. Put your heat shield in place, angled towards your airbag, route the hose clamp around the tab we bent on our heat shield and the exhaust, then thread it back together.Once you have the first clamp installed, go ahead and put your second clamp around and install it in the same way. These clamps can be tightened down with either a flathead screwdriver or a 10 millimeter socket.Now just angle your heat shield around your exhaust leaving about an inch to a half inch gap.Now we've gone ahead and installed our second heat shield here using the same process as the first, but again, these locations will prevent any heat from getting to our airbag.Now go ahead and begin inflating at about five pound increments up to the specifications in your owners manual, checking for leaks periodically.Now to check for leaks, spray each fitting with soapy water and look for the presence of bubbles. Now if you notice that there's any leaks or you need to make some adjustments, to release the air, the other side of your cap has a valve stem removal tool. You simply insert it into the end of your inflation fitting and unscrew the valve stem.Once the valve core is removed, all the air will be released and you can just reinsert the core.That completes our look at the Firestone Coil-Rite Air Helper Springs, part number F4108 on our 2008 Chevrolet Avalanche.


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Info for this part was:

Employee Joshua S
Video Edited:
Joshua S
Employee Jacob T
Video Edited:
Jacob T
Employee Chris R
Video Edited:
Chris R
Employee Brent H
Test Fit:
Brent H
Employee Conner L
Test Fit:
Conner L
Employee David F
Test Fit:
David F
Employee Jonathan Y
Video by:
Jonathan Y
Employee Robert C
Installed by:
Robert C

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