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What Size Spacer Do I Need for a Firestone Air Bag System on a Lifted Chevy Silverado?


i just need to know the model of spacer needed for when i put the lift on my truck. i cant have it out of service for more then the day i will be working on it.


Expert Reply:

I would be happy to help you but there are so many different lift options its going to require you to take some measurements of your Chevy Silverado 2500's suspension. Most lift kits don't lift the same amount in the front as they do the back, so a 3-1/2" lift may only have 1"-1-1/2" of lift in the rear. The most accurate way to tell what spacer is needed is to measure. I attached a photo that shows where to measure, and the size of lift spacer needed.

You'll want to make sure that your Silverado is level with all the wheels and tires still on the ground. You'll then measure from where the top bracket mounts to where the bottom bracket mounts.

If the distance is 6.5" - 7.5" you'll need 1.25" lift spacer item # F2536

If the distance is 7.5" - 8.5" you'll need a 2" lift spacer item # F2366

If the distance is 8.5" - 9.5" you'll need a 3" lift spacer item # F2367

firestone spacer chart
firestone spacer chart
(click to enlarge)
expert reply by:
Jerred H

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