Firestone Coil-Rite Air Helper Springs Installation - 2006 Toyota Sienna

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How to Install the Firestone Coil-Rite Air Helper Springs on a 2006 Toyota Sienna


Today on our 2006 Toyota Sienna we'll be installing the Firestone Air Helper Spring Kit Part #F4155. Our first step will be to install the air bag inside the coil spring. To make it more accessible and easier to install the air bag, it may be necessary to remove the lower shock mounts so that the axle can swing down further away from the vehicle. To do this, we'll remove the nut washer on the shock mount and then the fender washer and slide the shock off the lower shock mount. Now we can go ahead and take the weight off of the vehicle. To do this, we'll raise the body allowing the suspension and axle to fall. As you can see the wheel speed sensor wire is starting to become stretched. In order not to harm the wire we'll go ahead and disconnect the wire from the wheel speed sensor.

To disconnect the wire, we'll use a small pocket screwdriver and press on the lock and then remove it from its connection point. Next we'll go ahead and remove the bolt securing the bracket. Now we'll go and repeat the same process on the driver side so we can continue raising the body of the vehicle. Now that we've extended the springs you can see the opening of the spring is much larger than it was previously. This will now allow us to be able to go ahead and crush the air bag and slide it into the spring. To crush the air bag and to keep the air out while we install it, we'll use a piece of short line and airline tubing plug and slide it into the nipple of the air bag.

Now we're ready to go ahead and install into the coil spring. Keep in mind, the airline will face up. Now that we've got our bag into the spring we'll go ahead and remove the airline. To do this, we'll simply press on the gold collar around the airline using a flat blade screwdriver and then remove the air line. Now as you can see, it will allow air back into the bag and we can help it re-conform to its normal figure. After we have the air bag installed and back in its normal shape, we'll need to install the spacer disk provided with the install kit.

This will assist in protecting the line and nipple of the air bag. Now we're ready to go ahead and repeat the same process on the driver side. With both air bags installed, we can now go ahead and start reinstalling the ABS speed sensor wire and shock. Now with everything reinstalled, we'll go ahead and put the weight of the vehicle back down on the rear axle. With the air bag and protective disk installed. We're going to go ahead and take this opportunity to install the air line.

To do this, we'll run it through the top of the coil spring mount and down to the air bag. We'll go ahead and pick up on the disk and make sure that the line goes into the air bag and is secured. Now we're ready to go ahead and start routing our airline. Keep in mind when routing your airline you want to stay away from as many moving components or excessive heat, such as the exhaust, as possible. In order to assist us in routing the wire we're going to use some 1/2 inch metal Loom Clamps, Part #A0500, and self-tapping screws to secure them. We'll be routing our airline back to the rear hitch where we'll fabricate and install a bracket to secure it to. We'll be making one of these out of the Tow Ready Universal Mounting Bracket, Part #18140. To turn this into our mounting bracket, we'll need to drill out holes that'll fit the inflation valve. Nowwe can go ahead and mount the mounting bracket using the worm clamp provided with the install kit for the mounting bracket. Then we'll go ahead and install the inflation valve. To install the inflation valve, we'll take the valve, the two flat washers and nut. We'll first install the flat washer onto the valve, put it through the bracket, and then secure it with another flat washer and nut. Now we can go ahead and repeat the same process on the other side. Once we got our lines routed to the bracket, we'll go ahead and cut off the excess from the airline. We're ready to install the inflation valve. With our line routed through the bracket, we'll go ahead and slide the inflation valve on to the line. With both sides secured, we can go ahead and air up the bags and check for leaks. To check for leaks we'll just be using a bottle of soap and water. As you can see, we don't have any leaks and that'll complete our install of Firestone Air Helper Spring Kit, Part #F4155, on our 2006 Toyota Sienna. .


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Info for this part was:

Video Edited:
Zack K
Video by:
Andrew K
Video Edited:
Joshua S
Test Fit:
Nicholas E
Video Edited:
Jacob T
Video Edited:
Dustin K
Installed by:
Cole B
Video Edited:
Chris R
Video by:
Jonathan Y
Installed by:
Robert C

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