Air Lift LoadLifter 5000 ULTIMATE 88231Air LiftOriginal price was $857.99. Current price is $621.99.In Stock
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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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20 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1975 - 1986 | Chevrolet K10 | Requires 8 in. Between Tire And Frame |
| 1973 - 1974 | Chevrolet K10 Pickup | Requires 8 in. Between Tire And Frame |
| 1975 - 1981, 1983 - 1986 | Chevrolet K20 | Requires 8 in. Between Tire And Frame |
| 1973 - 1974 | Chevrolet K20 Pickup | Requires 8 in. Between Tire And Frame |
| 1977 - 1981, 1983 - 1986 | Chevrolet K30 | Requires 8 in. Between Tire And Frame |
| 1973 - 1974 | Chevrolet K30 Pickup | Requires 8 in. Between Tire And Frame |
| 1987 | Chevrolet V20 | Requires 8 in. Between Tire And Frame |
| 1987 | Chevrolet V30 | Requires 8 in. Between Tire And Frame |
| 1975 - 1978 | GMC K15 | Requires 8 in. Between Tire And Frame |
| 1974 | GMC K15/K1500 Pickup | Requires 8 in. Between Tire And Frame |
| 1979 - 1986 | GMC K1500 | Requires 8 in. Between Tire And Frame |
| 1975 - 1978 | GMC K25 | Requires 8 in. Between Tire And Frame |
| 1973 - 1974 | GMC K25/K2500 Pickup | Requires 8 in. Between Tire And Frame |
| 1979 - 1986 | GMC K2500 | Requires 8 in. Between Tire And Frame |
| 1977 - 1978 | GMC K35 | Requires 8 in. Between Tire And Frame |
| 1973 - 1974 | GMC K35/K3500 Pickup | Requires 8 in. Between Tire And Frame |
| 1979 - 1986 | GMC K3500 | Requires 8 in. Between Tire And Frame |
| 1987 | GMC V1500 | Requires 8 in. Between Tire And Frame |
| 1987 | GMC V2500 | Requires 8 in. Between Tire And Frame |
| 1987 | GMC V3500 | Requires 8 in. Between Tire And Frame |
The Air Lift LoadLifter 5000 ULTIMATE 88237 (Part #BBCG88237) fits 1975-1986 Chevrolet K10 models. The 1987 model year is the last year covered by this part number. For newer models, check for an updated version.
Yes, the Air Lift LoadLifter 5000 ULTIMATE 88237 (Part #BBCG88237) is designed to fit the 1975-1986 Chevrolet K10.
The Air Lift LoadLifter 5000 ULTIMATE 88237 (Part #BBCG88237) fits the following vehicles: 1975-1986 Chevrolet K10; 1973-1974 Chevrolet K10 Pickup; 1975-1986 Chevrolet K20; 1973-1974 Chevrolet K20 Pickup; 1977-1986 Chevrolet K30; 1973-1974 Chevrolet K30 Pickup; 1987 Chevrolet V20; 1987 Chevrolet V30; 1975-1978 GMC K15; 1974 GMC K15/K1500 Pickup; 1979-1986 GMC K1500; 1975-1978 GMC K25; 1973-1974 GMC K25/K2500 Pickup; 1979-1986 GMC K2500; 1977-1978 GMC K35; 1973-1974 GMC K35/K3500 Pickup; 1979-1986 GMC K3500; 1987 GMC V1500; 1987 GMC V2500; 1987 GMC V3500. Always verify your specific year, make, and model before ordering.
The Air Lift LoadLifter 5000 ULTIMATE 88237 (Part #BBCG88237) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The LoadLifter 5000 Ultimate is an adjustable air helper spring kit designed for 3/4-ton and 1-ton pickups and SUVs with leaf springs. It provides up to 5,000 pounds of load-leveling support with air adjustability from 5 to 100 PSI. The kit uses reinforced, commercial-grade single or double convolute bellows manufactured like a tire with layers of rubber and cords that control growth. It helps level the vehicle when carrying heavy loads and improves ride comfort and stability.
Kit 88237 is recommended for most 3/4-ton and 1-ton pickups and SUVs with leaf springs. The manual does not provide a specific list of vehicle models or years. Contact Air Lift customer service at (800) 248-0892 or visit airliftcompany.com to verify fitment for your specific vehicle.
No. The installation of this kit does not alter the gross vehicle weight rating (GVWR) or payload of the vehicle. You must check your vehicle's owner's manual and not exceed the maximum load listed for your vehicle. Exceeding the GVWR is dangerous and voids the Air Lift warranty.
The kit includes: 2 lower brackets (03102), 2 upper brackets (07130), 2 air springs (58496), 4 roll plates (11967), 4 U-bolts 4.5 inch (10583), 8 bolts 3/8 x 1.5 inch WHFB (17159), 16 Nyloc nuts (18435), 24 flat washers 3/8 inch (18444), 8 large flat washers 3/8 inch (18447), 2 swivel head elbows (21837), 8 bolts 3/8 x 7/8 inch HHCS (17203), 8 lock washers 3/8 inch (18427), 1 air line assembly (20086), 6 tie straps (10466), 2 valve caps (21230), 2 flat washers 5/16 inch (18405), 2 rubber washers (21234), 2 small star washers (18411), and 4 hex nuts 5/16 inch (21233).
Normal ride height (no load) is defined as the distance between the bottom edge of the wheel-well to the center point of the hub with the vehicle in an 'as delivered condition' (without a load, such as a tool box or camper). Measurements should be taken before beginning installation and recorded. All Air Lift kits are designed to be installed and operated at normal ride height. The vehicle must be at normal ride height during installation.
All air spring mounting bolts must be torqued to 20 lb.-ft. This includes: bolts attaching the upper bracket to the air spring, bolts attaching the lower bracket to the air spring, bolts attaching the lower bracket to the leaf spring U-bolts, and bolts attaching the upper bracket to the frame.
The upper bracket must be installed with the 'legs up' position only. It must be aligned vertically and horizontally with the lower bracket, positioned so that it is parallel with the lower bracket. The upper bracket should be positioned so that at least four bolt holes (two on each side) will be on a flat section of the frame rail, using the widest bolt spacing possible. Do not drill on the radiused edges of the frame.
The lower bracket must be installed with the bellows mounting slots (offset) facing outboard. The flat edge and part number of the bracket must face inboard. The holes in the air spring, roll plate, and lower bracket must be properly aligned before attachment.
There must be sufficient clearance between the air spring, the frame, and the tire and brake drum at the maximum inflated diameter of 7.0 inches. At normal ride height, the distances between the upper and lower brackets (points X and Y) should be approximately equal and between 5 and 7 inches. At maximum inflation (75-90 PSI), there must be at least 1/2 inch clearance from the air spring to the tire, brakes, frame, shock absorbers and brake cables.
Yes. You must drill 3/8 inch holes into the frame to attach the upper bracket. The manual requires that you center punch and drill one 3/8 inch locator hole first, install one bolt, check alignment, then drill a second hole on the opposite side before drilling the remaining two holes. Before drilling, you must move aside hydraulic lines, gas lines and electrical wires on both sides of the frame. Do not drill on the radiused edges of the frame.
Yes. Some vehicles may require the leaf spring U-bolts to be trimmed to allow the bottom bracket to fit properly. Additionally, on some vehicles the outer flange of the axle jounce bumper bracket extends out from the frame rail and must be trimmed or removed entirely to provide sufficient clearance from the air spring to the frame for the maximum inflated diameter of 7.0 inches.
Drill 5/16 inch holes at a convenient location (wheel well flanges, license plate recess, under gas cap access door, or through license plate). Ensure there is enough clearance around the inflation valves for an air chuck. Place a 5/16 inch nut and star washer on the air valve, leaving approximately 1/2 inch of valve exposed after installation to easily apply a pressure gauge or air chuck. Push the inflation valve through the hole and secure it with a rubber washer, flat washer, and another 5/16 inch nut. Tighten the nuts to secure the assembly.
Route the air line along the frame to the fitting on the air spring, maintaining at least 6 inches of clearance between the air line and the exhaust system. Avoid sharp bends and edges. Use zip ties to secure the air line to fixed points along the chassis. Tie straps should be tight but must not pinch the air line. Leave at least 2 inches of slack to allow for any movement that might pull on the air line. Cut the air line leaving approximately 12 inches of extra length, making a clean square cut to prevent leaks.
Use a sharp knife or a hose cutter and make clean, square cuts. Do not use scissors or wire cutters because these tools may deform the air line, causing it to leak around fittings. Do not cut the lines at an angle. Inspect the hose for scratches that run lengthwise on the hose prior to installation. If the air line is damaged, contact Air Lift customer service at (800) 248-0892.
Do not bend the 1/4 inch hose at a radius of less than 1 inch or bend the 3/8 inch hose at a radius of less than 1.5 inches. Do not put side load pressure on the fitting. The hose should be straight beyond the fitting for 1 inch before bending.
Inflate the air spring to 30 PSI. Spray all connections and the inflation valves with a solution of 1/5 liquid dish soap and 4/5 water. Spot leaks easily by looking for bubbles in the soapy water. After the test, deflate the springs to the minimum pressure required to restore the system to normal ride height (do not deflate to lower than 5 PSI). Check the air pressure again after 24 hours. A 2-4 PSI loss after initial installation is normal. Retest for leaks if the loss is more than 5 PSI.
Perform the following checks: (1) Clearance test — inflate to 75-90 PSI and ensure at least 1/2 inch clearance from tires, brakes, frame, shock absorbers and brake cables; (2) Leak test — inflate to 75-90 PSI and check all connections for leaks; (3) Heat test — ensure at least 6 inches clearance from heat sources; (4) Fastener test — recheck all bolts for proper torque; (5) Road test — drive 10 miles and recheck for clearance, loose fasteners and air leaks; (6) Overnight leak down test — recheck pressure after 24 hours; if pressure drops more than 5 PSI, there is a leak that must be fixed; (7) Thirty-day or 500-mile test — recheck the system after 30 days or 500 miles, whichever comes first.
The minimum recommended air pressure is 5 PSI. The maximum air pressure is 100 PSI. The air springs can safely be run at zero air pressure unladen (no load). However, for loaded vehicles (heavy bed load, trailer, or both), a minimum of 25 PSI is required. Never exceed 100 PSI regardless of load.
Check air pressure weekly. Always maintain normal ride height. Never inflate beyond 100 PSI.
The springs in this kit will support approximately 40 pounds of load (combined on both springs) for each 1 PSI of pressure. For example, at 25 PSI, the springs support approximately 1,000 pounds total. The required air pressure will vary depending on the state of the original suspension and the load being carried.
When increasing load, always adjust air pressure to maintain normal ride height. Increase or decrease pressure from the system as necessary to attain normal ride height for optimal ride and handling. Remember that loads carried behind the axle (including tongue loads) require more leveling force (pressure) than those carried directly over the axle. Always add air to springs in small quantities, checking the pressure frequently. It may be necessary to maintain different pressures on each side of the vehicle; as much as a 50 PSI difference is not uncommon for asymmetrical loads such as water, fuel, and appliances.
The vehicle can be lifted on a hoist for short-term service work such as tire rotation or oil changes. However, if the vehicle will be on the hoist for a prolonged period of time, support the axle with jack stands in order to take the tension off of the air springs. If it becomes necessary to raise the vehicle by the frame, make sure the system is at minimum pressure (5 PSI) to reduce the tension on the suspension and brake components. Use of on-board leveling systems do not require deflation or disconnection.
On occasion, give the air springs a hard spray with a garden hose to remove mud, sand, gravel or other debris.
Pressure determination comes down to three things: level vehicle, ride comfort, and stability. (1) Level vehicle — if headlights are shining into the trees or the vehicle is leaning to one side, raise the air pressure to level it. (2) Ride comfort — if the vehicle has a rough or harsh ride, try different pressures to determine the best ride comfort. (3) Stability — stability translates into safety and should be the priority; the driver may need to sacrifice a perfectly level and comfortable ride. Stability issues include roll control, bounce, dive during braking and sponginess. Tuning out these problems usually requires an increase in pressure.
If the front of the vehicle dives while braking, increase the pressure in the front air bags, if equipped.
If the system won't maintain pressure overnight, there is likely an improperly installed air line, or the air line has holes or cracks. Leak test the air line connections, the threaded connection into the air spring, and all fittings in the control system. Check to make sure air lines are seated in connectors. Inspect fittings with soapy water. Trim 1 inch off the end of the hose and reinsert it into the push-to-connect fitting, or re-seal the fitting. Ensure lines are cut straight.
Look for a kink or fold in the air line. Replace any air line that has been kinked.
If there is a problem with the swivel fitting: (1) Check the air line connection by deflating the spring and removing the line by pulling the collar against the fitting and pulling firmly on the air line. Trim 1 inch off the end of the air line. Be sure the cut is clean and square. Reinsert the air line into the push-to-connect fitting. (2) Check the threaded connection by tightening the swivel fitting another half turn. If it still leaks, deflate the air spring, remove the fitting, and re-coat the threads with thread sealant. Reinstall by hand tightening as much as possible and then use a wrench for an additional two turns.
If there is a problem with the inflation valve: (1) Check the valve core by tightening it with a valve core tool. (2) Check the air line by removing the air line from the barbed type fitting. Cut the air line off a few inches in front of the fitting and use a pair of pliers or vice grips to pull/twist the air line off of the fitting. Do not cut off the air line completely as this will usually nick the barb and render the fitting useless.
No. Air pressure can be adjusted with any type of compressor as long as it can produce sufficient pressure to service the springs. Even a bicycle tire pump can be used, but it is a lot of work. An on-board air compressor system allows for hassle-free control of the air springs. Learn more about Air Lift control systems at www.airliftcompany.com/products/compressor-systems.
If the air springs are properly installed and maintained, they can last indefinitely.
Kit 88237 is recommended for most 3/4-ton and 1-ton pickups and SUVs with leaf springs. Contact Air Lift customer service at (800) 248-0892 or visit airliftcompany.com to verify fitment for your specific vehicle model and year.
All air spring mounting bolts must be torqued to 20 lb.-ft., including bolts attaching the upper and lower brackets to the air spring, and bolts attaching the brackets to the frame and leaf spring.
The maximum air pressure is 100 PSI. Never exceed 100 PSI regardless of load. The minimum recommended air pressure is 5 PSI; loaded vehicles require at least 25 PSI.
Use a sharp knife or hose cutter and make clean, square cuts. Do not use scissors or wire cutters. Do not cut at an angle. Inspect the hose for lengthwise scratches before installation.
No. The installation does not alter the gross vehicle weight rating (GVWR) or payload. You must not exceed the maximum load listed in your vehicle's owner's manual. Exceeding the GVWR is dangerous and voids the Air Lift warranty.
Cause: Improperly installed air line, or air line has holes or cracks. Solution: Leak test the air line connections, the threaded connection into the air spring, and all fittings in the control system. Check that air lines are seated in connectors. Inspect fittings with soapy water. Trim 1 inch off the end of the hose and reinsert into the push-to-connect fitting, or re-seal the fitting. Ensure lines are cut straight.
Cause: A kink or fold in the air line. Solution: Replace any air line that has been kinked.
Cause: Fitting seal or air line is compromised. Solution: Check to make sure air lines are seated in connectors. Inspect fittings with soapy water. Trim hose or re-seal fitting. Ensure lines are cut straight.
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