How to Convert a 2011 Jeep Grand Cherokee to Air Suspension? Converting a 2011 Jeep Grand Cherokee to an air suspension involves replacing the factory coil springs with air springs, adding an air compressor, control valves, and a management system. This upgrade enhances ride comfort, load-leveling capabilities, and off-road performance. Kits like those from Arnott, Air Lift, or Universal Air Suspension provide plug-and-play solutions for DIY or professional installation.
What suspension gives the best ride?
What Is a Jeep Grand Cherokee Air Suspension Conversion Kit?
A Jeep Grand Cherokee air suspension conversion kit replaces the stock suspension with air springs, compressors, and electronic controls. Designed for models like the 2011 Grand Cherokee, these kits eliminate sagging coils, improve towing stability, and enable adjustable ride height. Popular options include Arnott’s AS-2985 kit, which retains OEM compatibility, and Air Lift’s LoadLifter 5000 for heavy-duty applications.
Why Replace Factory Suspension With an Air Suspension Kit?
Factory suspensions degrade over time, leading to uneven ride height and poor handling. Air suspension kits offer adjustable damping, automatic load leveling, and improved off-road articulation. For the 2011 Grand Cherokee, conversion eliminates common issues like rear coil spring failure while adding luxury-grade comfort and customizable height settings for highway efficiency or trail clearance.
Which Conversion Kit Is Best for a 2011 Jeep Grand Cherokee?
The Arnott AS-2985 kit is the top choice for direct OEM replacement, featuring pre-assembled air springs and a compressor. For heavy towing, Air Lift’s LoadLifter 5000 provides 5,000 lbs. capacity. Off-road enthusiasts prefer Universal Air Suspension’s HD kit with dual compressors and reinforced air bags. Budget options include Strutmasters’ conversion kit with simplified installation.
Is air suspension better than shocks?
How to Install an Air Suspension Conversion Kit?
Installation involves removing factory coils, mounting air springs, connecting air lines, and installing the compressor/control system. Key steps: (1) Disconnect battery, (2) Lift vehicle and secure on jack stands, (3) Remove wheels and factory suspension components, (4) Install air springs per kit instructions, (5) Route air lines and mount compressor, (6) Test for leaks and calibrate height sensors.
For a seamless installation, use a hydraulic jack to safely elevate the vehicle and ensure all components are properly aligned. Torque specifications for mounting bolts vary by kit—Arnott recommends 85–100 ft-lbs for air spring brackets. Air lines should be secured with zip ties away from sharp edges or heat sources. After installation, perform a 15-minute leak test by pressurizing the system to 100 PSI. Calibrate height sensors using the kit’s diagnostic tool to ensure accurate ride height adjustments. Professional alignment is advised to correct wheel angles affected by the suspension change.
| Tool | Purpose |
|---|---|
| Torque Wrench | Properly tighten suspension bolts |
| Air Line Cutter | Cleanly trim air hoses |
| Diagnostic Scanner | Calibrate electronic controls |
What Are the Costs of Converting to Air Suspension?
Kits range from $1,200 (Strutmasters) to $3,500 (Arnott Premium). Professional installation adds $800–$1,500. Total costs depend on kit complexity: basic conversions start at $2,000, while high-end setups with wireless controls and dual compressors exceed $4,000. Long-term savings come from reduced wear on tires/brakes and eliminated factory suspension repair costs.
How Does Air Suspension Affect Off-Road Performance?
Air suspension improves off-road capability via adjustable ground clearance (up to 12” in kits like Universal Air HD). It enhances articulation by reducing axle bind and allows on-the-fly stiffness adjustments for rock crawling vs. dune running. However, vulnerable air lines require skid plate protection in extreme conditions.
Does Conversion Void the Jeep Warranty?
Post-2011 models may have powertrain warranties unaffected, but suspension modifications typically void related coverage. Mopar’s official stance prohibits aftermarket air suspension kits unless dealer-installed. Use Magnuson-Moss Act protections: manufacturers must prove the conversion caused a failure to deny claims. Document professional installation and retain OEM parts for reversibility.
Warranty impacts depend on the extent of modifications. For example, replacing only the rear suspension may leave front components under warranty, but full conversions often nullify the entire suspension warranty. Dealerships may still honor powertrain or electrical system warranties if unrelated to the air suspension. To minimize risk, choose kits with CARB certification and NSF/ISO compliance. Always request a written warranty policy from the kit manufacturer and consult your Jeep dealer before installation. In cases of disputes, third-party inspections can determine whether the conversion directly caused a malfunction.
| Modification Type | Warranty Impact |
|---|---|
| Air Spring Replacement Only | Suspension warranty voided |
| Full Conversion Kit | Entire suspension warranty voided |
| Dealer-Installed Kit | May retain partial coverage |
Air Suspension vs. Lift Kits: Which Is Better?
Lift kits (e.g., Rough Country 3.5”) provide permanent height but lack adjustability. Air suspension offers variable clearance (2”–5” lift on demand) and load-leveling, ideal for combined highway/off-road use. Lift kits are cheaper ($1,000 vs. $2,500+) but lack the comfort and versatility of air systems. Hybrid setups combine both for extreme off-roading.
“Modern air suspension kits bridge the gap between luxury and utility. For the 2011 Grand Cherokee, conversions resolve chronic suspension issues while adding off-road agility. Opt for kits with OEM-grade air springs—cheap bags fail under heat and load. Always install a moisture trap in the compressor line to prevent winter freeze-ups.” — Senior Technician, 4×4 Restorations Inc.
Conclusion
Upgrading a 2011 Jeep Grand Cherokee with an air suspension kit transforms its capabilities, merging comfort with off-road prowess. While costs and installation complexity vary, the long-term benefits in durability, customization, and ride quality make it a superior alternative to factory suspensions or static lift kits.
FAQs
- How long do air suspension kits last?
- Quality kits last 80,000–100,000 miles. Air springs typically fail before compressors; replace every 5–7 years. Regular maintenance (cleaning debris, checking lines) extends lifespan.
- Can I install the kit myself?
- DIY installation is feasible with mechanical experience. Kits like Strutmasters include detailed guides. However, electrical components (compressors, sensors) often require professional calibration.
- Does air suspension improve fuel economy?
- Yes. Lowering the vehicle at highway speeds reduces drag, improving MPG by 3–5%. However, frequent height adjustments increase compressor use, slightly offsetting gains.