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Air Lift

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Air Lift Company now offers a kit that allows elite users to upgrade the components of their existing LoadLifter 5000 series air spring kits to those of the new LoadLifter 5000 Ultimate Plus kits.
Air Lift Company now offers a kit that allows elite users to upgrade the components of their existing LoadLifter 5000 series air spring kits to those of the new LoadLifter 5000 Ultimate Plus kits. With this upgrade opportunity, users can now have the longest-lasting load support system that money can buy, without needing to purchase an entirely new system. For those with existing Air Lift LoadLifter 5000 series kits on their vehicles, the power of air is undeniable -- up to 5,000 lbs. of load-leveling capacity, eliminating squat, poor headlight aim, trailer sway, and body-roll, creating a comfortable ride and stress-free towing experience. Now, Air Lift offers elite towers and haulers the opportunity to upgrade the components of their existing LoadLifter 5000 series systems to those of the new LoadLifter 5000 Ultimate Plus. With this upgrade kit, Air Lift users can add stainless steel roll plates, mounting hardware, 10 feet of braided air line, and military-grade AN fittings to their system for added protection from heat and road debris, as well as leak-free connections. All of the existing benefits of the LoadLifter 5000 series system are preserved, with the addition of a new level of the safety and comfort that Air Lift is known to provide. As the leader in air suspension products for more than 65 years, Air Lift is committed to delivering quality load support parts that last. To ensure the highest quality, longevity, and customer satisfaction, the key suspension components, including the air springs and all hardware, have all been torture-tested on our hydraulic test rig. With a limited-lifetime warranty -- not to mention the Air Lift reputation for great customer service and technical support, should you run into any snags in the installation process -- you can purchase this kit with peace of mind. Installing the kit is a simple process, requiring only common hand tools and no frame drilling.

Air Lift Company has developed dependable air spring suspension products since our inception in 1949. Our original product, a rubber air spring inserted into a car’s factory coil spring, was created and patented in 1950. We’ve come a long way since 1949 and are proud to be a dedicated suspension specialist company.
Today, Air Lift load support products are sold worldwide and are engineered to fit over 540 vehicles. Our extensive product line offers air helper springs for trucks, RVs, SUVs, CUVs, and vans, as well as the most technologically advanced on-board air compressor systems for on-the-go air spring control.
Air Lift leads the industry in no-drill applications – kits that bolt onto your vehicle’s frame, speeding the installation process. Our teams work constantly to bring innovative products to you and upgrade existing products with the latest technology.
All of our efforts are spent ensuring your safety and comfort by designing, engineering, and manufacturing the highest quality suspension products. We are a family-owned business based in Lansing, Michigan, and make your family and cargo’s safety our top priority.
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Call 888-634-9494Limited Lifetime
The MN-1056 upgrade kit replaces the air line, air fittings and Schrader valves in compatible LoadLifter 5000 and LoadLifter 5000 Ultimate kits with braided stainless steel air lines and upgraded fittings. Kit 52301 also includes roll plates and air spring mounting hardware. The kit is designed to upgrade existing LoadLifter 5000 Series installations.
The kit is intended for compatible LoadLifter 5000 and LoadLifter 5000 Ultimate kits. You must consult the original installation guide that came with your LoadLifter 5000 Series kit to confirm compatibility and determine which mounting hardware configuration your vehicle requires. Download an electronic copy at AirLiftCompany.com if you do not have the original guide.
The new fittings and braided stainless steel air lines may require additional clearance between the top of the air spring and upper bracket. Air Lift recommends verifying that there is adequate clearance before installation to avoid installation difficulty. If clearance is tight, contact Air Lift customer service at (800) 248-0892 for technical assistance.
Kit 52301 includes: 4 stainless steel roll plates (11880), 2 nickel-plated brass AN-type fittings (21815), 4 stainless steel flat-head screws 3/8"-24 x 3/4" (17363), 4 stainless steel hex-head bolts 3/8"-24 x 7/8" (17284), 4 stainless steel button-head bolts 3/8"-24 x 7/8" (17376), 4 stainless steel lock washers 3/8" (18504), 4 stainless steel flat washers 3/8" (18507), 2 stainless steel braided air lines (20987), 2 M8 stainless steel flat washers (18572), 2 stainless steel star washers (18623), 2 nickel-plated brass fill valves with caps and nuts (21709), 12 zip ties (10466), 2 nickel-plated brass PTC-to-AN adapter fittings (21813), and 1 air line assembly (20084).
Kit 52300 includes: 2 nickel-plated brass AN-type fittings (21815), 2 stainless steel braided air lines (20987), 2 M8 stainless steel flat washers (18572), 2 stainless steel star washers (18623), 2 nickel-plated brass fill valves with caps and nuts (21709), 12 zip ties (10466), 2 nickel-plated brass PTC-to-AN adapter fittings (21813), and 1 air line assembly (20084). This kit does not include roll plates or air spring mounting hardware.
Yes. Kit 52301 includes extra hardware to accommodate many Air Lift LoadLifter 5000 kits. There will be hardware left over after installation. The parts in this kit do not replace the bracket-to-chassis mounting hardware.
The manual specifies that 2 wrenches are needed to tighten the air line hex nuts. The manual states that the easiest way to tighten the fittings is off the vehicle. No other specific tools are listed in the installation guide.
Yes, if you are upgrading the roll plates and air spring mounting hardware (kit 52301). The air spring assembly must be removed from the vehicle to install the upgraded roll plates and air spring hardware. If you are only upgrading the air lines and fittings (kit 52300), refer to the original installation guide for your specific vehicle to determine if removal is necessary.
Yes. Exhaust all air from the system before beginning installation, either using the Schrader valves or the on-board air compressor system if equipped. If the vehicle has a compressor system, remove the fuse to prevent the system from trying to inflate the air springs while you are working on the vehicle.
To disconnect PTC fittings: (1) push in on the air line, (2) push the collar, and (3) with the collar depressed, pull the air line out of the fitting. See Figure 2 in the installation guide for visual reference.
Install the upgraded air spring fitting on the air spring finger tight plus 1 3/4 turns. See Figure 4 in the installation guide.
Use zip ties to secure the air line to fixed points along the chassis every 6" to 8". Leave at least 2" of slack to allow for any movement that might pull on the air line. Coil and secure any excess air line in an area where it will not be susceptible to damage.
The preferred location for the Schrader valve is the back of the vehicle. The bumper, license plate holes or bumper recess are all acceptable locations.
No. The braided stainless steel air line cannot be trimmed. You must route the line as supplied and coil and secure any excess air line in an area where it will not be susceptible to damage.
Torque air spring mounting hardware to no more than 20 lb.-ft. (27 Nm).
Tighten the air line hex nut finger tight, then use 2 wrenches to turn 1 additional flat (1/6 of one full turn). Do not overtighten. The easiest way to tighten the fittings is off the vehicle before final installation.
Keep the air line away from the fuel line, brake lines and electrical wires. This is a caution that applies to the entire air line installation.
If the vehicle has a compressor system, remove the fuse to prevent the system from trying to inflate the air springs while you are working on the vehicle. This prevents accidental inflation during service.
The kit is compatible with LoadLifter 5000 and LoadLifter 5000 Ultimate kits. Consult your original kit's installation guide to confirm compatibility and identify your mounting hardware configuration. Download guides at AirLiftCompany.com.
You need 2 wrenches to tighten the air line hex nuts. Air Lift recommends tightening the fittings off the vehicle before final installation.
Yes, if upgrading roll plates and mounting hardware (kit 52301). For air line and fitting upgrades only (kit 52300), refer to your original installation guide. Always exhaust all air from the system and remove the compressor fuse if equipped before starting work.
No. The braided stainless steel air line cannot be trimmed. Route it as supplied and coil any excess in a protected area away from damage.
Air spring mounting hardware: no more than 20 lb.-ft. (27 Nm). Air line hex nut: finger tight plus 1 additional flat (1/6 turn) using 2 wrenches. Do not overtighten.
Keep the air line away from fuel lines, brake lines and electrical wires. If your vehicle has an on-board compressor, remove the fuse before working on the system to prevent accidental inflation.
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