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  1. Vehicle Suspension
  2. Pacbrake
  3. Air Springs
  4. Towing/Load Leveling
  5. Rear Axle Suspension Enhancement
  6. Heavy Duty
THIS ITEM IS NOT A FIT FOR
1978 Oldsmobile Omega
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Pacbrake

Pacbrake Alpha SD Air Bag Suspension Kit - Sleeve Style - Rear Axle - 1,800 lbs

Part Number: PB42VV
In Stock
$339.63
Retail:$377.37
You Save: $37.74
Vehicle Suspension
Not Confirmed to Fit

1978 Oldsmobile Omega

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Loading up your truck shouldn't make you dread the drive. These air bags help you stay level, ride steady, and stay in control when packing for weekend adventures. It's a smart way to take the stress out of hauling and enjoy the drive again. Great Prices for the best vehicle suspension from Pacbrake. Pacbrake Alpha SD Air Bag Suspension Kit - Sleeve Style - Rear Axle - 1,800 lbs part number PB42VV can be ordered online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (9)
  • Q & A (0)
  • Videos (1)
  • Photos

Pacbrake Vehicle Suspension - PB42VV

Highlights

  • Custom Fit for Your Vehicle: Mounts to existing attachment points
  • 1,800-lb Load Support: Keeps your truck level and steady so heavy trailers or campers tow safely.
  • Smoother, Controlled Ride: Reduces squat and bounce to help your truck stay planted under load.
  • Adjustable Air Pressure: Lets you fine-tune firmness for towing days or daily driving comfort.
  • DIY-Friendly Setup: Installs with basic tools and video guides for quick driveway installation.
  • Reliable Sleeve-Style Bags: Built to handle repeated hauling without leaks or loss of support.

Features to know about

Stay Level When the Load Gets Heavy: 1,800 lbs of Rear Axle Support

Packing for a weekend trip or hauling gear shouldn’t make your truck squat. The Pacbrake Alpha SD Air Bag Suspension Kit adds up to 1,800 lbs of rear axle support so your ride stays level and steady when towing trailers or carrying bed loads. Keeping the truck level improves steering response, braking control, and overall handling under load.

Smooth Out the Ride: Sleeve-Style Air Springs for Balanced Control

Heavy loads can make a truck bounce or sway more than it should. These sleeve-style air springs help smooth out rough roads and keep your setup stable. They absorb bumps and reduce that harsh “bottoming out” feeling that comes with stock suspension when overloaded, helping you stay comfortable while keeping control.

Match Your Setup to the Load: Adjustable Air Pressure

Every haul is different, and being able to fine-tune makes a big difference. The air bags adjust with pressure changes so you can dial in firmness when towing or drop pressure for everyday driving comfort. Whether you’re running empty or fully packed, you can keep your suspension balanced for a confident ride.

Install It Yourself with Basic Tools: Straightforward DIY Setup

You don’t need a shop to get this system working. The kit is designed for easy installation using standard tools and clear diagrams. With straightforward routing for airlines and adjustable air fittings, DIY installers can get everything mounted cleanly and ready for the road without special equipment.

Built to Handle Real Work: Durable Design for Long-Term Use

When you depend on your suspension day after day, durability matters. This Pacbrake kit is built for heavy-duty use with strong components designed to handle tough loads and frequent towing. It’s a dependable upgrade that keeps your truck level, stable, and ready for whatever you need to haul.

Specs

Weight and Capacity

  • Load-leveling capacity: 1,800 lbs

Axle Application

  • Axle placement: Rear axle

Suspension Type

  • Style: Sleeve style air bag suspension kit
  • Category: Air springs
  • Design purpose: Rear axle suspension enhancement
  • Intended use: Heavy duty towing/load leveling

HP10178 Packbrake Alpha SD Rear Air Suspension

No longer available 5-13-25
Installation Details PB42VV Installation instructions

This Product Fits The Following Vehicles




Video of Pacbrake Alpha SD Air Bag Suspension Kit - Sleeve Style - Rear Axle - 1,800 lbs
Video Thumbnail Video Player Dialog

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.




Video Transcript for Review of Pacbrake Vehicle Suspension - Alpha SD Rear Axle Sleeve Style Air Bag Kit - PB42VV

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this Pacbrake Alpha SD rear-axle sleeve-style airbag suspension kit. Now, this kit has been designed to fit your 2007 to 2018 Chevy Silverado and GMC Sierra 1500 for long truck beds in the two and four-wheel drive models. And on custom fit parts, such as this kit, I do recommend taking advantage of our vehicle fit guide here at etrailer.com. Simply input the year, make and model of your vehicle, and our fit guide will confirm if this kit will work for you or if we have something comparable that will work for you. Now, loading up your Silverado or your Sierra should not be something that's going to lead to sloppy steering, or poorly aimed headlights, or sketchy braking, but factory suspension can only do so much before the heavy loads start dragging everything down.

So this system is going to add up to 1,800 pounds of load support to your rear axle, keeping your stance level and your handling sharp. So what that means for you is better traction, safer braking and headlights that are gonna stay aimed where they belong, especially important when hauling at night or in rough weather. If you're moving work gear, or you're towing a small trailer, or packing for a weekend trip, you're gonna feel the difference in every mile that you drive. Now, as you know, no two hauls are gonna be exactly the same, and your suspension shouldn't be stuck in a one-size-fits-all setup. With simple manual inflation valves, you're gonna be able to dial in the air pressure from 10 PSI for empty cruising to 100 PSI when the bed is loaded or the trailer is hitched.

It's a fast, flexible way to get your truck back to level without guessing or setting for a rough, or settling for a rough ride rather. When your cargo changes, your truck's going to adapt. So what's great about it is no tools are gonna be necessary, no shop to visit, just smart, simple control that you can handle yourself. Now, heavy loads obviously are gonna demand extra support, but when the weight comes off, you still want your truck to drive like a truck, not like a brick. So again, thanks to the smart sleeve-style air-spring design, you're gonna be able to safely lower that pressure down when unloaded without losing control or beating yourself up on rough pavement.

So that's gonna be a smooth, predictable ride that you're looking for, whether your bed is stacked with cargo or empty and ready for weekend cruising. You're not gonna have to worry about constantly adjusting, you're not gonna have to worry about a clunky ride, just consistent comfort and control. These do feature precision laser-cut brackets that are gonna be designed to bolt cleanly to the frame of your truck to the existing mounting points without welding or drill in to your frame. You're just gonna use the included hardware to get this installed into place. As you can see, I do kind of have them loosely installed or loosely put together just to kind of give you an idea of what the setup's gonna look like.

And this kit is designed to work with your setup right now and wherever your upgrades take you tomorrow. So you can inflate manually with standard air valves right out of the box, no extra parts needed, but if you already have an onboard compressor, this is going to connect easily to most existing setups. If you're planning for an in-cab wireless controller down the road, that's not gonna be an issue because the foundation is already being built with this kit, making it easy to expand your control options when you're ready. So again, I said that the load support is up to 1,800 pounds, but I do wanna make you aware of the fact that these air springs do not actually increase your truck's weight-carrying capacity. So you do wanna make sure that you're not exceeding your manufacturer's recommended weight limits for your truck. If you do pick this kit up, we would love to hear back from you regarding the installation and the operation. You can share your experiences with us by dropping a comment or leaving a review on this product page. We'd love to hear back from you. If you have any additional questions that I didn't cover with you today, feel free to give us a call and we'd love to talk to you and answer any questions that you might have. Well, that's gonna wrap up our look today. I do hope that it was helpful for you. Again, my name is Andy. Thank you for joining me.

Ratings & Reviews

4.7

9 reviews
5 Stars
(6)
4 Stars
(3)
3 Stars
(0)
2 Stars
(0)
1 Star
(0)
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by:
2024 GMC Canyon
Purchased for 2024 GMC Canyon Elevation trim 4x4. Needed to take out the 2-in drop from my travel trailer hitch weight of 400 lb.

Ordered on E-Trailer which sent the order to their supplier who took 4 days from the time they received it to actually ship it. This meant it burned past the originally stated delivery date by 3 days.

Once it arrived all the parts were there. Everything was labeled, packaged up and included instruction sheets.

Install went fine with two issues:
1. The included self-tapping bolts for mounting the upper portion to the frame would not self-tap into the existing holes. I had to use a tap to put the threads into the hole.
2. I tested the air valve with the shock out of the vehicle (probably shouldn't have) which expanded it to full height, which meant when I compressed it for installation it was crumpled and folded onto itself and not the way it was supposed to be sleaved. This issue was solved after I increased the air to 90 PSI and put a trailer load of 400 pounds on the hitch. While releasing air the sleeve compressed back into proper shape.

I love that they included the cutter for the air hoses which made it easy. No leaks.

Ride while towing was the same as before (great) without the rear drop and nose high lights. Driving with no load and the minimum 10 psi didn't give any noticeable bounce or increased stiffness.
by:
2003 toyota Tacoma
Great shipping and packing, Item arrived very fast.
This is my second Air Bag Suspension Kit. The first kit lasted 23 years on my
2003 Toyota Tacoma
. This is the replacement.
by:
Bolted right into place, GMC Canyon. No installation issues or hang up’s. Whole thing Might have taken about 3 hours. Pumped em’ up and have been driving for a week, no leaks no issues. I recommend!
Brooke M. profile picture
Etrailer Expert

Brooke M.

6/16/2025

Glad to hear that, Rob :) Everything looks great. What do you tow where you like having the extra suspension support ?

Rob profile picture

Rob

6/17/2025

@BrookeM . Hi Brooke, I tow a 23’ center console boat, which was really making my suspension sag. I also regularly tow a motorcycle on a hitch carrier, which also made my suspension sag. Both needed different levels of support and the boat never gets towed on the highway but the moto does. So I am hoping these air bags will take care of the different levels of support needed for each function. Haven’t towed yet but will likely do so this week.
Brooke M. profile picture
Etrailer Expert

Brooke M.

6/17/2025

@Rob I think air bags were a smart choice! Let me know what you think once you've gotten to use them :) Do you do race with the motorcycle?
by:
Easy and simple installation, quality built components that fit the need. Thank you.
by:
This Pacbrake kit is excellent, reason for the 4 star is because the instructions are not exactly accurate but one can figure it out and the self tappers are not the 8mm as described but 10mm, this is an issue when using a tap to thread the holes because the the bolts will not self thread into the pre-drilled holes. The ride with 14 psi has improved the handling and when i throw a few hundred pounds in the box the truck doesn't squat. exactly how i want it.
by:
2024 Chevrolet Colorado
Easy installation. Instructions are pretty simple. Be sure to follow torque specs. Add a little thread seal tape to your 90 swivel fitting to prevent leaks.The heat shield was not necessary for my year model(2024),since there was plenty of space between the air bags and the exhaust. Instead of drilling holes under license plate, I just used the screw hole for my license plate for schrader valves. Just drilled out the license plate holes out and little placed through. No more bouncing or suspension sag. Recommended!
by:
The air bags seem to work well. The installation was tricky and I wouldn’t recommend it for the amateur.
by:
2003 Toyota Tacoma
by:
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See what our Experts say about this Pacbrake Vehicle Suspension


Info for this part was:

Employee Dustin K
Video Edited:
Dustin K
Employee Daron K
Edited by:
Daron K
Employee Andy C
Installed by:
Andy C
Employee Dawn Z
Written by:
Dawn Z

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