Overview

  • Made In USA
  • Limited Lifetime Warranty
  • Made With Glide Ride Technology

Details

Vehicle Info

  • Year: 2008-2012
  • Make: Mercedes-Benz
  • Model: GL550 4MATIC
  • Manufacturer: Strutmasters
  • Product Type: Conversion Kit

Air Suspension Conversion Kit Includes

These are the components and materials you can expect to find shipped with your new purchase.

Shipping Info

All of our products have shipping options available to guarantee you get your part in a timely and affordable manner.

  • Next Business Day: Delivery typically by 10:30 a.m.
  • 2 Business Days: Delivery typically by end of day
  • 1-5 Business Days: Delivery based on distance to destination
Tour Strutmasters

Manufactured, Packaged and
Shipped in North Carolina, USA

All of our conversion kits are manufactured, packaged and shipped from our warehouse right here in Roxoboro, NC, USA. We believe in providing the highest quality parts, such as Eibach Springs, to ensure our customers only need to buy the right product once.

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Features & Benefits

Strutmasters Conversion Kits Save Money, Time and Headaches

2008-2012 Mercedes-Benz GL550 4MATIC 4-Wheel Air Suspension Conversion Kit With Suspension Warning Light Module (MK14GM) is the perfect solution to your air suspension problems. Designed to be very affordable, you can convert your air suspension to use standard.

Our Conversion Kits are built to improve the performance and stability of your ride. Converting to a non-air suspension system gives you a more reliable ride.

Our kits don't require any major modifications to your vehicle to install.

Only Strutmasters offers Premium Eibach Springs on our conversion kits. Notice the difference with a better, smoother ride!

All of our kits come with easy to install instructions so you or your mechanic can get your car up and running faster than ever.

Why Choose Strutmasters Instead Of Those Other Guys

Strutmasters' air to non-air suspension conversion kit saves 2009 GL550 4Matic owners time, frustration, and money. It eliminates faulty electrical air parts forever. Manufactured in the USA, the kit comes complete with two new Eibach coil springs with mounts and two passive hydraulic fluid and gas shocks for the rear. Detailed instructions and online installation videos help customers get the kit installed in about one hour per wheel. ASE certified technicians are available to answer any questions if further assistance is needed. And even though the kit is more affordable than dealership replacement, the quality is still excellent. Strutmasters guarantees this with a Lifetime Limited Warranty. Read the positive customer reviews to see firsthand why the majority of GL550 owners switch from air to non-air suspension using our coilover kit.

How Do I know If My GL550 4MATIC Air Suspension is failing?

Early detection of a failed or leaking air suspension system on the 2009 GL550 4MATIC is the key to avoiding total failure. Look for these common signs that indicate the suspension is going bad, before it's too late. The most noticeable sign is a sudden height variance between different sides of the GL550. One inflated end and one sagging end is typically seen. This gives the GL550 the illusion it's “squatting down.” There may also be a shifting lean from one side to the other. If suspension failure is more advanced, the air compressor will wear out. A suspension warning light will be illuminated on the dashboard if the air compressor has completely stopped working. To avoid an expensive direct replacement, the vehicle owner should get the suspension fixed as soon as an improper ride height is detected.

Strutmasters

Overall Savings

How does this part compare to OEM parts and other competitive solutions?

  • $2,201

    in Savings

  • 56%

    Less Than Dealer

2008-2012 Mercedes-Benz GL550 4MATIC OEM Replacement Parts:

+ Front Air Struts (w/Active Dampening System) ($1,080/strut)
+ Rear Air Strut (w/ADS) ($556/strut)
+ Air Compressor Assembly ($420)
+ Pressure Accumulator (w/ADS) ($300)
= TOTAL: Over $3,900 (and that doesn’t even include replacing electronic components that are known to fail such as the height sensors).

After Market Replacement Parts:

+ Front Air Struts (w/Active Dampening System) ($650/strut)
+ Rear Air Strut ($680/strut)
+ Air Compressor Assembly ($490)
+ Pressure Accumulator ($230)
= TOTAL: Over $3,300 (and that doesn’t even include replacing electronic components that are known to fail such as the height sensors).

Strutmasters Conversion Kit:

+ (2) Front passive hydraulic fluid struts preloaded with Eibach Coil Springs
+ (2) Rear coil springs
+ (2) Rear passive hydraulic fluid shocks
+ (1) Suspension warning light delete module
+ Detailed installation instructions
+ Over-the-phone technical support and a Limited Lifetime Warranty

Choosing the rear air-suspension conversion kit for the 2009 Mercedes-Benz GL550 4MATIC saves YOU over $1,400!

**Prices were quoted directly from an actual Mercedes-Benz Genuine Original Equipment Replacement Parts site, results may vary**

Our Price: $1,699.00!

Suspension Components List

The 2009 Mercedes-Benz GL550 4MATIC is built with the following suspension components:

2009 Mercedes-Benz GL550 4MATIC Air Struts (models with Active Dampening Suspension) (x2)- shocks whose dampening capabilities are controlled by the suspension control module.

2009 Mercedes-Benz GL550 4MATIC Coilover Struts (models without Active Dampening Suspension) (x2)- A type of shock absorber, it is a piece of metal tubing filled with gas-charged hydraulic fluid that is connected to the wheel of a vehicle in order to reduce the effects of vertical travel on a rough surface which controls the bounciness, and therefore comfort, of a vehicle. Coil springs fit around the top portion of the struts and hold the vehicle up, they are rated for and designed to work with the rest of the suspension system.

2009 Mercedes-Benz GL550 4MATIC Shock Absorbers (x2)- a metal tubing filled with gas-charged hydraulic fluid that is connected to the wheel of a vehicle in order to reduce the effects of vertical travel on a rough surface which controls the bounciness, and therefore comfort, of a vehicle.

2009 Mercedes-Benz GL550 4MATIC Air Springs (x2)- commonly referred to as air bags, a plastic and rubber bag that is fitted on top of the strut that uses pressurized air as a cushion instead of a metal coil spring to hold a vehicle off of the ground and off of its wheels. These are the number one cause of all air suspension leaks. All air springs all go bad at about the same rate. If one is leaking, the others will not be far behind. For a proper repair, all of them need to be replaced at the same time.

2009 Mercedes-Benz GL550 4MATIC Height Sensors (x4)- a linkage located near each wheel of a vehicle with any electronic suspension that, either mechanically or electronically, constantly measures the height of the vehicle, and reports this information back to the control module so that the computer can identify if changes in height need to be adjusted accordingly. The ride height sensor is a moving part, and like all moving parts, they will eventually wear out.

2009 Mercedes-Benz GL550 4MATIC Air Lines- tubes that run from a compressor to the air springs, which carry pressurized air to the air bags.

2009 Mercedes-Benz GL550 Solenoids (models with Active Dampening Suspension) (x4)- usually L-shaped, these plastic components connect the electrical connection and lines of suspension components to the suspension control module on vehicles with active suspension. The solenoid regulates the air pressure for each air spring. Solenoids start to leak as they wear out causing the vehicle to sag or to lean. This will cause the ride height sensor to send a signal to activate the compressor in an attempt to inflate the air suspension and level out the vehicle. This excessive work load will eventually lead to total failure of the compressor.

2009 Mercedes-Benz GL550 4MATIC Compressor Assembly- creates/sends pressurized air to active suspension components. When the air suspension starts leaking, the compressor/pump starts working harder to try to keep the system inflated. By the time air suspension leaks down completely, sitting the vehicle on its tires, the compressor will either have failed or be well on its way to full failure. Buying replacement struts and taking the time to install them only to find out the compressor still needs to be replaced can be very frustrating, time-consuming, and expensive.

2009 Mercedes-Benz GL550 4MATIC Suspension Control Module- a computer which is responsible for the operations of the air suspension system and maintaining the vehicle’s correct ride height.

2009 Mercedes-Benz GL550 O-rings- although they are the least expensive parts of the air suspension, they are responsible for maintaining the seal where all of the air lines connect. Be sure to replace the O-rings when repairing any air suspension system.

Performance You Can’t Find Elsewhere
Made With Eibach Springs

American Made Parts,
Unrivaled Quality

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Professional Assistance and ASE Certified Tech Support
Those Other Guys Don't Offer

Video Library

Learn Why Strutmasters Kits Are The Only Choice For You

Watch videos to help you make the right decision when purchasing the best conversion kit for your vehicle.

Reviews

Real Customers, Real Reviews

Read reviews from people just like you looking for the perfect solution for their suspension needs.

Name: | Location: Hanahan, SC | SKU: MK14GM

After having a problem with the air ride suspension on our 2008 Mercedes GL450. We began doing research for replacement options (because all four “bags” had previously been replaced at a pretty high price, but the system was failing again.) It seemed that the best option would be to convert the vehicle to a spring/strut suspension system.
Research showed that I could get a cheaper foreign made spring/strut system but the reviews indicated that they were a lesser quality system than the heavier, American made system made by Strutmasters.
I contacted Strutmasters and was fortunate enough to be connected to Donielle. Donielle is excellent at her job as she was knowledgeable, friendly, and went out of her way to get answers to all of my questions. I found that Strutmasters products were 100% American made and manufactured right in Roxboro, NC. I learned that I could have the replacement system manufactured and shipped to a local mechanic to install but didn’t feel confident with most local mechanics I spoke with about their confidence level to do the work.
When I mentioned this concern to Donielle, she informed me that they also have a shop (Strutdaddys,) right in Roxboro that could do the install. I decided it would be worth the 5 hour drive to Roxboro. The crew at Strutdaddys led by Andrew and Matt got me in and out the same day and the car rides like new.
I hope the management at Strutmasters appreciates how great an employee they have in Donielle. I highly recommend Strutmasters!

Name: | Location: Atlanta, GA | SKU: MK14GM

I researched my options thoroughly and am thrilled with my decision to go with the complete suspension conversion kit – removing the airmatic system. The Strutmasters employees on the phone were extremely helpful. Now that the kit is installed, my GL450 rides better than ever and as my mechanic says…”I will never have to deal with suspension problems again.” My only regret is that replaced one front airstrut about 6 months before learning about Strutmasters – that repair alone cost me about 75% of what I incurred in total for the complete suspension conversion (parts and labor). Very happy with my results using Strutmasters.

Name: | Location: New York | SKU: MK14GM

Thanks Donielle, best attention and fast response!

Name: | Location: Groton, MA | SKU: MK14GM

Jennifer helped me with ordering my product. She was great, very personable, and helpful! Owning my own business I appreciate customer service and you guys went above and beyond. I will recommend you to others. The part worked out great for our car. It is running much better now! Thank you so much for your help, friendly service, great product, and fast shipping. You get an excellent rating from me!

Christian Walzel

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