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  3. ARNOTT 91SDWX29

ARNOTT 91SDWX29 Rear Front Air Spring Coil Conversion Kit

fits model: Gl450, Gl550.

91sdwx29 Arnott Front And Rear Air Spring To Coil Conversion Kit For Gl450 Gl550

( Brand: Arnott ), ( Manufacturer Part Number: 91SDWX29 ), ( Type: Air Spring To Coil Spring Conversion Kit ), ( Placement On Vehicle: Front And Rear ), ( Fits 1: 2007-2012 Mercedes Gl450 ), ( Fits 2: 2008-2012 Mercedes Gl550 ), ( Fits 3: 2010-2012 Mercedes Gl350 ), ( Manufacturer Warranty: 12 Month Warranty ), ( Attention: Please Read All Notes To Confirm Fitment ), ( Cs-sku: 400 )

Review ARNOTT Front And Rear Air Spring To Coil Conversion Kit fits GL450 GL550

The Arnott 91SDWX29 Front and Rear Air Spring Coil Conversion Kit is an excellent solution for Mercedes-Benz GL450 and GL550 vehicle owners looking to replace their failing or worn-out air suspension system with a reliable and durable coil spring setup. This conversion kit is engineered and manufactured by Arnott Industries, a leading aftermarket suspension specialist known for its high-quality and OE-like products.

The 91SDWX29 kit comes with eight (4 front and 4 rear) replacement coil springs, specifically designed to provide a comfortable ride and optimal handling characteristics. These high-performance coil springs are crafted from premium materials, ensuring long-lasting durability and resistance to corrosion. Each spring is also calibrated to match the original equipment specifications of the Mercedes-Benz GL-Class, ensuring a perfect fit and optimal performance.

In addition to the coil springs, this conversion kit includes all necessary hardware, including upper and lower control arms, shock absorbers, and bushings. The front and rear shock absorbers are specifically tuned to deliver a comfortable and controlled ride, while the bushings ensure a precise and secure connection between the various suspension components.

Installing the Arnott 91SDWX29 Front and Rear Air Spring Coil Conversion Kit is a straightforward process, thanks to the detailed installation instructions and step-by-step videos provided by Arnott Industries. The kit also includes all necessary mounting brackets and adapter plates, making the conversion process seamless and hassle-free.

By choosing the Arnott 91SDWX29 Front and Rear Air Spring Coil Conversion Kit, Mercedes-Benz GL450 and GL550 owners can enjoy a more reliable, durable, and cost-effective suspension system. This kit offers numerous benefits, including improved ride quality, enhanced handling, and reduced maintenance costs compared to the original air suspension system. With Arnott's commitment to quality and customer satisfaction, this conversion kit is an excellent investment for any Mercedes-Benz GL-Class owner.

Arnott 91SDWX29 Air Spring Coil Conversion Kit for GL450 and GL550: A Detailed Analysis

The Arnott 91SDWX29 Air Spring Coil Conversion Kit is a popular aftermarket solution for GL450 and GL550 Mercedes-Benz models, providing air suspension systems with a coil spring alternative. Let's explore the key advantages and potential drawbacks of investing in this kit.

Pros:

1. Improved Handling: The Arnott 91SDWX29 conversion kit offers improved handling and stability compared to the original air suspension system. Coil springs provide better response and control, making the vehicle more agile and responsive on the road.

2. Cost-Effective: Over time, the cost of maintaining and repairing air suspension components can add up. The Arnott conversion kit offers a more cost-effective alternative by replacing the air suspension system with coil springs.

3. Durability: Coil springs are known for their longevity and durability compared to air springs. By making the switch, you may reduce the frequency of suspension-related repairs and maintenance.

4. Reduced Downtime: With the Arnott conversion kit, you can save time and money by performing the installation yourself, or by having it installed at a lower cost compared to a dealership.

5. Customization: The conversion kit offers an opportunity to customize the ride height and handling characteristics of your Mercedes-Benz GL450 or GL550.

Cons:

1. Ride Comfort: Depending on personal preference, some users may find that the coil springs provide a stiffer ride compared to the original air suspension system. This could lead to a less comfortable driving experience.

2. Limited Adjustability: While the conversion kit offers some adjustability, it may not provide the same level of fine-tuning as the original air suspension system.

3. Potential for Noise: Some users have reported an increase in road noise after installing the Arnott conversion kit. This could be due to the stiffer ride and the absence of the air suspension system's damping properties.

4. Potential for Vibration: Coil springs may transmit more vibrations to the vehicle than air springs, which could result in a less refined driving experience.

5. Lack of OEM Integration: The Arnott conversion kit is an aftermarket solution and may not offer the same level of integration and compatibility with other vehicle systems as the original air suspension system.

Conclusion:

The Arnott 91SDWX29 Air Spring Coil Conversion Kit offers several advantages, including improved handling, cost-effectiveness, durability, and the opportunity for customization. However, it also comes with some potential drawbacks, such as a stiffer ride, limited adjustability, increased road noise, vibrations, and lack of OEM integration.

Ultimately, the decision to invest in this conversion kit depends on your personal preferences, driving style, and budget. If you prioritize handling and cost savings, and are willing to accept a slightly less comfortable ride, the Arnott conversion kit could be a worthwhile investment. However, if you value ride comfort and the fine-tuning capabilities of the original air suspension system, it may be best to stick with the OEM solution.

Recommendation:

If you're considering the Arnott 91SDWX29 Air Spring Coil Conversion Kit for your Mercedes-Benz GL450 or GL550, weigh the pros and cons carefully and consider the following recommendations:

1. Consider your driving style and preferences: Determine whether the potential benefits of the Arnott conversion kit outweigh the drawbacks for your specific driving needs.

2. Research and read reviews: Look for thorough reviews and testimonials from other users who have installed the Arnott kit to gain a better understanding of the potential outcomes.

3. Consult a professional: If you're unsure about the installation process or have concerns, consult with a qualified mechanic or suspension specialist to help you make an informed decision.

4. Set realistic expectations: Understand that the Arnott conversion kit may not provide the same level of ride comfort as the original air suspension system, but it can offer improved handling and cost savings.

Details:

Engineered in the USA. Patented EBM to turn off dashboard warning lights. Powder coated steel coil springs. Arnott designed strut assemblies.

Front and Rear Air Spring to Coil Conversion Kit 91SDWX29 for GL450 GL550: Position: Brand: Arnott condition: New, Notes Features: Converts active passive. Detailed Applications Vehicle, 2007 2009 Mercedes GL320, 2010 2012 GL350, 2007 2012 GL450, 2008 2012 GL550, ML320, 2006 2011 ML350, 2010 2011 ML450, 2006 - 2007 ML5 2008 2011 ML550. Exclusively for Mercedes-Benz ML/GL W164. Replace in Pairs.

part #: 91sdwx29 price

  • $1271.84

specifications coilspringi:

  • for models: Gl450, Gl550
  • brand: Arnott
  • mpn: 91sdwx29
  • type: Air Spring To Coil Spring Conversion Kit
  • placement on vehicle: Front And Rear
  • fits 1: 2007-2012 Mercedes Gl450
  • fits 2: 2008-2012 Mercedes Gl550
  • fits 3: 2010-2012 Mercedes Gl350
  • manufacturer warranty: 12 Month Warranty
  • attention: Please Read All Notes To Confirm Fitment
  • cs-sku: 400

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  • # reviews: 52879
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  • city: Atlanta, Georgia

offer coilspringi:

  • started: October 15, 2025
  • availability: In Stock
  • quantity: 1
  • sold: 0
  • options: Ship-to-home

returns coilspringi:

  • time: 30 Days
  • policy: Returns Accepted
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  • type: Fixed
  • class: Standard
  • transit: 2-6 Days
  • cost: $0.00
  • service: Standard

general coilspringi:

  • condition: New
  • Car Truck Parts Accessories > Steering Suspension > Leaf Coil Springs
for models: gl450, gl550, type: air spring to coil spring conversion kit, placement on vehicle: front and rear, fits 1: 2007-2012 mercedes gl450, fits 2: 2008-2012 mercedes gl550, fits 3: 2010-2012 mercedes gl350, manufacturer warranty: 12 month warranty, attention: please read all notes to confirm fitment, cs-sku: 400,
category: auto parts > car truck parts accessories > steering suspension > leaf coil springs, sku: 19608652736687502,
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  • New. Offer #1 priced at $1271.84 + $0.00 shipping estimate = $1271.84* total. Condition: New. Notes Air Spring to Coil Spring Conversion Kit.FREE SHIPPING

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