Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88347Air LiftOriginal price was $887.99. Current price is $643.99.In Stock
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2025 - 2026 Chevrolet Silverado 1500
Confirmed to Fit
2025 - 2026 GMC Sierra 1500
Confirmed to Fit
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LoadLifter 5000 ULTIMATE with internal jounce bumper to absorb shock for best ride comfort
Adjustable air spring kit for leaf springs
Rear
Safely run w/zero air pressure
LoadLifter 5000 ULTIMATE adjustable air spring kits feature all of the benefits of our heaviest rated air spring with the addition of an internal jounce bumper inside the spring for the ultimate in ride comfort. An Air Lift exclusive product! Fits vehicles with in-bed hitches. Tow and haul the heaviest loads with safety and comfort with LoadLifter 5000 ULTIMATE. Works with vehicle's leaf springs to provide up to 5,000 lbs. of rear load leveling capacity and keeps the vehicle riding stable, level and comfortable whether loaded or unloaded. Fully adjustable from 5 to 100 PSI. The closed-cell urethane foam jounce bumper inside the ULTIMATE air springs provide a cushion of air that absorbs shock, eliminates harsh jarring on rough roads and protects vehicles carrying heavy loads. Never bottom out again with the ULTIMATE! LoadLifter 5000 ULTIMATE air springs are maintenance free! Safely run with zero air pressure because of the internal jounce bumper. Replaces factory jounce bumper that is sometimes removed when adding air springs. Requires no drilling into frame! Includes industry-exclusive 60 Day No Questions Money Back Guarantee! Includes the most comprehensive Lifetime Warranty in the industry---covers all kit contents including brackets, fittings and air line. Air springs are built like a tire and are reinforced by durable, 2-ply fabric for maximum strength. Exclusive upper and lower roll plates included. Protect the springs from sharp edges, such as brackets or the frame. The kit includes 2 air springs, brackets, air lines, Schrader valve and all of the hardware needed for installation. Includes fully illustrated instruction manual. Add an Air Lift on-board air compressor system to inflate and deflate air springs with the touch of a button from inside or outside of the vehicle.
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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4 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2025 - 2026 | Chevrolet Silverado 1500 | — |
| 2019 - 2024 | Chevrolet Silverado 1500 | Non Trail Boss models only |
| 2025 - 2026 | GMC Sierra 1500 | — |
| 2019 - 2024 | GMC Sierra 1500 | Non AT4 Models only |
Yes, the Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88288 (Part #BBCG88288) is designed to fit the 2019-2026 Chevrolet Silverado 1500.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88288 (Part #BBCG88288) fits the following vehicles: 2019-2026 Chevrolet Silverado 1500; 2019-2026 GMC Sierra 1500. Always verify your specific year, make, and model before ordering.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88288 (Part #BBCG88288) fits 2019-2026 Chevrolet Silverado 1500 models. The 2026 model year is the last year covered by this part number. For newer models, check for an updated version.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88288 (Part #BBCG88288) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
Air Lift offers two kit configurations: kits 57288, 88288, and 89288 fit GM Silverado/Sierra 1500 trucks; kits 57388, 88388, and 89388 fit GM Trail Boss and Sierra AT4 models. The manual does not specify model year ranges, so contact Air Lift customer service at (800) 248-0892 to confirm fitment for your specific vehicle.
The three versions differ in roll plate material, air line type, and hardware finish. Standard LoadLifter 5000 has zinc-plated steel roll plates and black nylon air lines. LoadLifter 5000 Ultimate has black powder-coated roll plates and black nylon air lines. LoadLifter 5000 Ultimate Plus has stainless steel roll plates, braided stainless steel air lines, and stainless steel air spring mounting hardware. Air Lift also offers upgrade kits: part 52300 (braided stainless steel air lines and fittings) and part 52301 (stainless steel roll plates, air spring mounting hardware, braided stainless steel air lines and fittings).
LoadLifter 5000 kits provide up to 5,000 pounds (2,268 kg) of load-leveling support with air adjustability from 5 to 100 PSI (0.34 to 7 BAR).
Yes, but the installation method differs. Trucks with fifth-wheel hitch brackets along the frame rail use self-tapping screws (part P) to attach upper brackets instead of U-bolts. Drill two 5/16" holes through the frame bottom using the bracket holes as a template and torque all four fasteners to 15 lb.-ft. (20 Nm).
Required tools include: standard and metric open-end or box wrenches, adjustable wrench, ratchet with 10 mm and 9/16" deep-well sockets, 3/8" nut driver, T40 Torx bit, torque wrench, standard and metric hex head wrenches, hose cutter/razor blade/sharp knife, hoist or floor jacks, safety stands, safety glasses, air compressor or compressed air source, and spray bottle with dish soap/water solution.
Raise and support the vehicle using safety stands or equivalent so that the axle can be safely dropped away from the frame. This clearance is necessary to position the air spring assemblies between the axles and frame. Ensure the vehicle is properly supported before beginning installation.
Yes. Using a 10 mm deep socket, remove the jounce bumpers from both sides of the vehicle and discard them. This is required as part of the Getting Started procedure.
The two M8-1.25 x 50 hex head cap screws (part K) that reattach the upper brake line bracket should be torqued to 10 lb.-ft. (14 Nm).
The M8 hardware (parts J, L, and M) used to attach the brake line bracket to the brake line tab bracket should be torqued to 16 lb.-ft. (22 Nm).
1. Place a 3/8"-16 x 3" carriage bolt (part O) through the inner most square hole on the rear side of each lower bracket (B). 2. Install a lower bracket (B) and roll plate (F) on each air spring (E) using two 3/8"-24 x 3/4" flat head socket cap screws (S) through the innermost mounting holes, torqued to no more than 20 lb.-ft. (27 Nm). The radiused edge of the roll plate should face the air spring. 3. Install the 90-degree swivel elbow fitting (R) into the top of each air spring finger tight, then tighten an additional one and a half turns. 4. Attach the upper roll plates (F) and upper brackets (A) using two 3/8"-24 x 7/8" bolts (T), two 3/8" lock washers (U), and two 3/8" flat washers (V), torqued to no more than 20 lb.-ft. (27 Nm). 5. Ensure the swivel fitting is less than 7/8" in height after bracket installation.
The 3/8" flange nuts (part N) on the carriage bolts (part O) at the front and rear square holes of the lower bracket should be torqued evenly to 16 lb.-ft. (22 Nm).
1. Place U-bolts (part I) over the frame on both sides of the vehicle. 2. Lower the vehicle or raise the axle while inserting the threaded portions of the U-bolts through the corresponding holes in the upper brackets (A). Install flange nuts (N) finger tight. 3. Adjust the upper bracket (A) as needed to vertically align the air spring with the frame or as close to perpendicular as possible. 4. Torque all flange nuts (N) to 16 lb.-ft. (27 Nm).
Once the upper brackets are in position, drill two 5/16" holes through the bottom of the frame using the holes in the middle of the bracket (just forward and behind the jounce bumper mounting cups) as a template. Attach the upper brackets using self-tapping screws (part P) and torque all four fasteners to 15 lb.-ft. (20 Nm). Then reattach the wire harness guards on the front side of the axle and tighten securely.
Drilling is required only for trucks with fifth-wheel hitch brackets alongside the frame rail. You must drill two 5/16" holes through the frame bottom to attach the upper brackets using self-tapping screws. For trucks without fifth-wheel hitches, U-bolts are used and no drilling is required.
Recommended locations for Schrader valves are: inside the fuel tank filler door, inside rear wheel wells, or the license plate or rear bumper area. For LoadLifter 5000 Ultimate Plus kits specifically, the recommended location is the rear bumper area or license plate. Drill a 5/16" (8 mm) hole at the chosen location if necessary.
1. Cut the air line in half using a razor blade or hose cutter, making clean, square cuts. Do not use scissors or wire cutters. 2. Use zip ties to secure the air line to fixed points along the chassis without pinching or kinking it. The minimum bend radius is 1" (25 mm). Leave at least 2" (50 mm) of slack to allow for movement. 3. Install the Schrader valve in the chosen location. Keep at least 6" (150 mm) clearance between all air lines and the exhaust system and avoid sharp bends and edges.
1. Use zip ties to secure the air line to fixed points along the chassis every 6" to 8" (150-200 mm), leaving at least 2" (50 mm) of slack for movement. 2. Tighten the air line hex nut finger tight, then use two wrenches to turn one additional flat (1/6 of one full turn). Do not overtighten. The easiest way to tighten the fitting is off the vehicle. 3. Install the Schrader valve in the chosen location. 4. Coil and secure any excess air line in an area where it will not be susceptible to damage. The braided stainless steel air line cannot be trimmed. Keep the air line away from fuel lines, brake lines, and electrical wires.
No. The braided stainless steel air lines cannot be trimmed. Any excess air line must be coiled and secured in an area where it will not be susceptible to damage.
The maximum inflation pressure is 100 PSI (7 BAR). However, the air pressure actually needed is dependent on load and gross vehicle weight rating. Never inflate beyond 100 PSI (7 BAR), and always maintain normal ride height.
The minimum recommended pressure is 5 PSI (0.34 BAR).
Perform the following checks in order: 1. Clearance test—Inflate air springs to 40-60 PSI (2.8-4.1 BAR) and ensure at least 1/2" (13 mm) clearance from tires, brakes, frame, shock absorbers, and brake cables. 2. Leak test—Inflate to 40-60 PSI and check all connections for leaks using soapy water; all leaks must be eliminated before road testing. 3. Heat test—Ensure at least 6" (152 mm) clearance from heat sources for air springs and air lines; install heat shield if included. 4. Fastener test—Recheck all bolts for proper torque. 5. Road test—Drive the vehicle 10 miles (16 km) and recheck for clearance, loose fasteners, and air leaks.
Check air pressure weekly.
Ensure at least 6" (152 mm) of clearance between air springs and air lines and any heat sources. If a heat shield was included in the kit, install it. If there is no heat shield but one is required, contact Air Lift customer service at (800) 248-0892.
Inflate the air springs to 40-60 PSI (2.8-4.1 BAR) and ensure at least 1/2" (13 mm) clearance from anything that might rub against each sleeve, including tires, brakes, frame, shock absorbers, and brake cables.
The minimum bend radius for nylon air lines is 1" (25 mm). Avoid sharp bends and edges, and do not pinch or kink the air line.
Keep at least 6" (150 mm) of clearance between all air lines and the exhaust system. Avoid sharp bends and edges.
Use a soapy water solution to check all air line connections and the inflation valve core before deflating and removing the air spring. All leaks must be eliminated before the vehicle is road tested.
No. For safety and to prevent possible damage to the vehicle, do not exceed the maximum gross vehicle weight rating (GVWR) or payload rating as indicated by the vehicle manufacturer, even though the air springs are installed.
All kits include air springs, roll plates, air line assembly, swivel elbow fittings, flat head socket cap screws, hex head cap screws, lock washers, flat washers, valve caps, hex nuts, and rubber washers. Standard and Ultimate kits include nylon air lines; Ultimate Plus includes braided stainless steel air lines and AN-type fittings. Kits also include upper and lower brackets, clamp brackets, brake line tab brackets, spacers, U-bolts, carriage bolts, thread-cutting screws, and zip ties.
Yes. Using a T40 Torx bit, remove the two outermost Torx head screws on both wire harness guards, located on the front side of the axle. After installing the air springs and upper brackets, reattach the wire harness guards on the front side of the axle and tighten securely.
Yes. Remove the brake line bracket attached to the axle under the leaf spring on both sides of the vehicle and set the bolt aside for reinstallation. Attach the brake line tab bracket (G) using the factory hardware previously removed and tighten securely on both sides. Then attach the brake line bracket to the brake line tab bracket using M8 hardware (J, L, and M), torqued to 16 lb.-ft. (22 Nm).
The forward clamp bracket (C) is positioned on the front side of the axle and aligns with a hole on the front of the lower bracket (B) to help secure the air spring assembly in position.
The two 3/8"-24 x 7/8" hex head cap screws (T) used to attach the upper roll plates (F) and upper brackets (A) should be torqued to no more than 20 lb.-ft. (27 Nm).
The two 3/8"-24 x 3/4" flat head socket cap screws (S) used to install the lower bracket (B) and roll plate (F) on each air spring (E) should be torqued to no more than 20 lb.-ft. (27 Nm).
Install the 90-degree swivel elbow fitting (R) into the top of each air spring finger tight, then tighten an additional one and a half turns. After the upper bracket is installed, ensure the swivel fitting is less than 7/8" in height; if not, tighten the fitting until this height is achieved.
Drill a 5/16" (8 mm) hole at the chosen Schrader valve location if necessary.
Leave at least 2" (50 mm) of slack in the air line to allow for any movement that might pull on the air line. For braided stainless steel air lines, secure them to fixed points every 6" to 8" (150-200 mm).
Cut the air line in half using a razor blade or hose cutter, making clean, square cuts. Do not use scissors or wire cutters.
Tighten the air line hex nut finger tight, then use two wrenches to turn one additional flat (1/6 of one full turn). Do not overtighten. The easiest way to tighten the fitting is off the vehicle before final installation.
Keep the braided stainless steel air line away from fuel lines, brake lines, and electrical wires.
Inflate the air springs to 40-60 PSI (2.8-4.1 BAR) and use a soapy water solution to check all air line connections and the inflation valve core for leaks. All leaks must be eliminated before the vehicle is road tested.
If the swivel fitting is taller than 7/8" after the upper bracket is installed, tighten the fitting until the height is less than 7/8".
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