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  1. Vehicle Suspension
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FITS 2013 Freightliner Sprinter
Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs
Pacbrake

Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs

Part Number: PB49RV
In Stock
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$562.07
Retail:$624.55
You Save: $62.48
Vehicle Suspension
Confirmed to Fit
2013 Freightliner Sprinter

3500

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Pacbrake vehicle suspension for your 2013 Freightliner Sprinter are available from etrailer.com. Installation instructions and reviews for your Freightliner vehicle suspension. Expert service, and great vehicle suspension prices. etrailer.com carries a complete line of Pacbrake products. Order your Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs part number PB49RV online at etrailer.com or call 1-800-940-8924 for expert service.
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  • Reviews (25)
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2013 Freightliner Sprinter - Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs

  • Air Springs
  • Towing/Load Leveling
  • Pacbrake
  • Heavy Duty
  • Rear Axle Suspension Enhancement
  • Suspension Only

5,000-lb Capacity. When the load gets heavy, your truck shouldn't feel like it's fighting you. These air bags help you stay level and in control so you can tow with confidence and handle heavy loads without second-guessing your suspension.


Highlights

  • Custom Fit for Your Vehicle: Precision brackets bolt to factory attachment points.
  • 5,000-lb Load Support: Adds rear axle support for towing, hauling, and bed-loaded stability.
  • Improved Ride Stability: Reduces rear-end sag, sway, and bounce for better handling under load.
  • Adjustable Air Pressure: Set support between 5 psi and 100 psi depending on your load.
  • Complete Kit, No Drilling: Includes laser-cut brackets, push-to-connect fittings, and all hardware.
  • Ready Now, Upgrade Later: Use manual inflation or connect to an onboard air system when you're ready.

Features to know about

Control and Cushion When It Counts

When the load gets heavy, your truck needs more than just rear springs hanging on for dear life. Alpha HD air springs add up to 5,000 lbs of rear axle support, keeping your truck steady even when the trailer is loaded, the bed is packed, and the miles are long. No more rear-end sag throwing off your braking and steering, or headlights pointing into the sky. With air bag support underneath, you keep control of your ride even when you're towing a travel trailer or moving a serious payload.

Dial in the Ride for Any Load

Every load is different, and this system adjusts to match. Alpha HD air springs let you fine-tune ride height and firmness with air pressure from 5 to 100 psi. When carrying heavy weight, add air to level your suspension and maintain steady handling. Running without a load? Drop to the minimum pressure for a smoother, more compliant ride without stiffness or bounce. Manual inflation valves are included, so tuning your setup for each trip is straightforward and dependable.

Built Tough for Work and Weather

Air bags are only as strong as their weakest link. That's why Alpha HD bags are reinforced from end to end with heavy-duty end caps, 20 internal support wires, and powder-coated steel brackets. Add corrosion-resistant hardware and thick roll plates, and you've got gear that holds up to real-world hauling through heat, cold, salt, and slop.

Installation That Doesn't Waste Your Weekend

Adding serious load support shouldn't mean losing a whole weekend. The precision laser-cut brackets are designed to bolt cleanly to your truck's existing mounting points with minimal drilling. Just smart engineering that fits the way it should, which is perfect for the DIYer. Manual valves mount through license plate fastener holes or a location of your choosing (which may require drilling). With high-quality fittings, pre-bent brackets, and mounting hardware included, you'll be back on the road in just a few hours without a trip to the fab shop.

Flexible for Today, Ready for What's Next

This kit is designed to work with your setup today and wherever your upgrades take you tomorrow. You can inflate manually with standard air valves right out of the box, no extra parts needed. Already have an onboard compressor? The Alpha HD system connects easily to most existing setups. Planning for an in-cab wireless controller down the road? No problem. The foundation is already built in, making it easy to expand your control options when you're ready.

Specs:

Weight & Capacity:

  • Load support: up to 5,000 lbs of additional leveling support
  • Air springs will not increase your vehicle's weight-carrying capacity. Do not exceed the manufacturer's recommended weight limit.

Adjustability:

  • Air pressure range: 5 psi 100 psi; maintain minimum 5 psi when unloaded

Estimated Install Time:

  • Professional install: 2 hrs
  • DIY: 3 hrs, depending on tools and experience. Plan for extra time if this is your first air spring install or you're working in a driveway setup.

Warranty:

  • Limited lifetime on air bags
  • 2-Year or 24,000 miles on mounting brackets, fasteners, and spacers

Included Components:

  • Pacbrake Alpha HD air springs (rear axle)
  • Precision laser-cut powder-coated steel brackets
  • Grade 5 plated hardware
  • Air lines, push-to-connect fittings, inflation valves, installation instructions


HP10391 Pacbrake Alpha HD Rear Air Suspension - 5,000 lbs - Manual Inflation Valves

Installation Details PB49RV Installation instructions

California residents: click here


Video of Pacbrake Alpha HD Air Bag Suspension Kit - Rear Axle - 5,000 lbs

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 HD Rear Axle Double Convoluted Air Bags - PB49RV

Hi, everybody, Andy here with etrailer.com. Let's take a real quick look at this Pacbrake Alpha HD rear axle double convoluted airbag suspension kit. Now, this kit has been designed to fit your 2007 and newer Sprinters, the 3500 and the 4500 with the dual rear wheel models, and this is also gonna work with both the two and four-wheel drives. I do wanna point out, as you see there on your screen, this is not gonna fit the single rear wheel models, it's not going to fit the eSprinter models, and it's not going to fit models with ride height sensors, just so you're aware of all that up front. Now, on custom fit parts, such as this kit, I do highly recommend you take advantage of our vehicle fit guide here at etrailer.com. Just input the year, make, and model of your vehicle and our fit guide will confirm for you if this kit will work or if we have something comparable that will work for you.

As you know, when the load gets heavy and your Sprinter needs more than just those factory rear springs hanging on for dear life, these airbags are going to help you out. They're gonna add up to 5,000 pounds of rear axle support, so they're gonna help keep your Sprinter level and steady even when your trailer might be loaded or the cargo area in your Sprinter is packed and the miles are long. With a kit like this, you're not gonna have to worry about rear end sag throwing off of your braking or your steering, or your headlights pointing up to the sky instead of the road where they should be. Now, every hull is gonna be different. That's why these air springs give you full control over the ride height and firmness with adjustable air pressure from five to 100 PSI.

So, if you're hauling a fifth wheel or a full bed of gravel, you can crank up the pressure, and then, when you're unloaded and you're heading home, you can drop that pressure back down for a softer ride. With these manual inflation valves, they're tuning your suspension for the day's work. It's gonna be pretty straightforward. Extreme hauling does demand extreme durability. These springs are built with 1" thick corrosion-resistant end caps, which are, you can't see because they do have them kind of loosely assembled, here.

But the bags are also reinforced with 20 internal support wires for maximum strength under that heavy load. And then, you get these heavy-duty roll plates at the bottom and the top, here. That's gonna help protect the bags from chafing, and they're gonna help extend the life of your airbags. And then, these powder-coated steel brackets are gonna fight back against rust, road salt, and rough seasons. And so, if it's bitter cold or you have scorching heat or mud-slick job sites, this system is made to outlast whatever the road gives you, mile after mile and load after load.

These precision laser-cut brackets are designed to bolt cleanly to your Sprinter's existing mounting points. You're not gonna have to worry about welding or drilling into your frame. You're just gonna install these with the included hardware that you see here on my table before me. And then, this kit is designed to work with your setup today and wherever your upgrades may take you tomorrow. With this, you're gonna be able to inflate manually with the standard air vaves out, air valves, rather, right out of the box, so no extra parts are gonna be needed. But if you already have an onboard compressor, this kit's gonna connect easily to most existing setups. And then, if you're planning for an in-cab wireless controller sometime down the road, that's not gonna be an issue, either, because the foundation with this kit is already built in, making it very easy to expand your control options when you're ready. Again, the load support is gonna be up to 5,000 pounds of additional leveling support, but just so you're aware of the fact, air springs do not actually increase your Sprinter's weight carrying capacity, so you wanna make sure that you're not exceeding your manufacturer's recommended weight limit. Instructions will be included to guide you through the installation. And if you do pick this kit up, we would love to hear back from you regarding your experience with the installation and the operation. You can do that by dropping a comment or leaving a review on this product page. And if you have any other additional questions for us, don't hesitate to give us a call. We'd love to help you out. 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.

Customer Satisfaction Score:

Ratings & Reviews

4.7

25 reviews
5,000-lb Capacity. When the load gets heavy, your truck shouldn't feel like it's fighting you. These air bags help you stay level and in control so you can tow with confidence and handle heavy loads without second-guessing your suspension.

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Don’t fit, worked on it for hours with no luck.



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They need instructions to be more clear but fit very nicely i would recommend pacebrake



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Going camping!!!



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Worked out great



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Thank you Joshua for your assistance.



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Easy install and done exactly what I needed it to do



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Excellent choice… Very high-quality… Took 4 to 5 hours to install… Which included new shocks getting all the tools together and clean up… Very happy thank you



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Installed this past weekend. Haven't towed with it yet. Nice construction and finish. I have a 2025 Chevrolet Trail Boss 2500HD and the spacers are NOT needed. Measurement for needing the spacers in 7" and above between jounce cup and contact pad. My space was 5.5" to 6".



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Awesome product easy to install and I really appreciate etrailer service



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It was very easy install . The ride has improved a lot while towing my 41 ft. toy hauler , Thanks !!



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Direct bolt on, plug and play



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Easy to install and work just as I had expected. Great finish on brackets and quality hardware. Easy to follow instructions. Highly recommend these airbags!



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The 2" spacers are definitely not needed for a Trail Boss. I could barely get them in, and now the ride is super stiff. Now I have to get back under the truck and remove the spacers. Not looking forward to that. It was very difficult installation, for no reason.



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Very well built brackets, installation was as explained in the instruction. Happy Camper!



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Put about 1800 miles on these last weekend. Was picking up a car that's heavier than my normal race car on the ramp truck, so I wanted to give the truck a bit of help. Good news, it worked well. Truck rode beautifully, loaded or unloaded.

The instructions could be a bit more clear, in regards to the clinch stud. I had that on backwards at first because of how things appeared in the picture. Also, I know most things are DIY but installation was about 80% assembly, 20% actual install. If these came already assembled, it would have saved a lot of time!



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The product is a great product. After installation was completed and the air added to the air suspension, it raised the rear end of the van about 2-3 inches.A very nice improvement.
Installation instructions definitely need better quality diagrams.


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See what our Experts say about this Pacbrake Vehicle Suspension

  • Can I Install Air Bags and SumoSprings on a 2024 Mercedes-Benz Sprinter 4500?
    Hey Pj! Those are not going to work together. The SumoSprings Solo Custom Helper Springs item # SSR-338-47 are going to mount in the same position on your axle and use the factory bump stop perch to attach. Out of those two options, I recommend the Pacbrake Alpha HD Air Bag Suspension Kit item # PB49RV. These are going to offer more adjustability and support in your Mercedes rear end. They have a 5,000 lbs capacity and you're not going to effect your ride when your rear end isn't loaded...
    view full answer...

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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