Air Bags For 2018 Sierra Denali With 6" Under Leaf Spring Block Lift  

Question:

Expert Reply:

I do have an option for you but the Air Lift Ride Control Air Helper Springs part # AL59565 will not install with a block lift under the leaf spring.

I recommend to use the Firestone Ride-Rite Air Helper Springs part # F2430 which will work with the 6" block lift if you use spacers as confirmed by Firestone. The Firestone bags are more durable and less prone to punctures compared to the other brands available. You can measure for the correct size spacer with the truck on level ground without any weight in the bed. Measure from the top bracket to the bottom bracket where the air bags attach. I have attached the spacers available depending on the amount of space between the bottom and top bracket. The spacer will install between the lower bracket and the bottom of the air bag.

6.5" to 7.5" - part # F2536
7.5" to 8.5" - part # F2366
8.5" to 9.5" - part # F2368
10.5" to 11.5" - part # F2373
11.5" to 12.5" - part # F2374

I recommend to add an air compressor kit to make inflating the bags more convenient. For that, I recommend the Firestone Air Command I part # F2158 which is a standard analog gauge compressor system that allows you to inflate both bags at the same time. This will require extending air lines to the cab. If you want a wireless system that doesn't require air lines to the cab for an easier install, I recommend the Air Lift WirelessONE Compressor System for Air Helper Springs part # AL25980EZ which includes an easy U-bolt no drill install without air lines to the cab because of the included wireless remote.

expert reply by: Heather A

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