Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88398Air LiftOriginal price was $887.99. Current price is $643.99.In Stock
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2007 - 2021 Toyota Tundra
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MN-826_88299.pdf
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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 front 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. 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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1 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 2007 - 2021 | Toyota Tundra | — |
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88299 (Part #BBCG88299) fits 2007-2021 Toyota Tundra models. The 2021 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 with internal jounce bumper 88299 (Part #BBCG88299) is designed to fit the 2007-2021 Toyota Tundra.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88299 (Part #BBCG88299) fits the following vehicles: 2007-2021 Toyota Tundra. Always verify your specific year, make, and model before ordering.
The Air Lift LoadLifter 5000 ULTIMATE with internal jounce bumper 88299 (Part #BBCG88299) 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 system that provides up to 5,000 pounds (2,268 kg) of load-leveling support for the rear suspension. It uses commercial-grade convolute bellows with an internal jounce bumper and allows air adjustability from 5–100 PSI (0.34–7 BAR). The system helps maintain ride height when towing or hauling heavy loads.
Kit 88299 includes two air springs (part 58740), two roll plates (11967), two upper brackets (07510), two lower brackets (03008), two swivel elbow fittings (21953), fasteners (3/8" flat-head screws, hex-head cap screws, lock washers, flat washers, U-bolts, carriage bolts, nylon lock nuts), clamp bars (01801), air line (20086), six zip ties (10466), two valve caps (21230), and hardware for Schrader valve installation (M8 flat washers, rubber washers, star washers, 5/16" hex nuts). See the Hardware List on page 3 for complete part numbers and quantities.
The manual does not specify vehicle year, make, model, cab style, bed length, or drivetrain compatibility. The kit is designed for vehicles with a rear leaf spring suspension, an existing frame hole forward of the axle, and frame rivets that align with the upper bracket mounting holes. Contact Air Lift customer service at (800) 248-0892 or (517) 322-2144 (outside USA/Canada) to confirm fitment for your specific vehicle.
Yes. The first step is to jack up the rear of the vehicle using a jack or hoist, support the rear axle with safety stands, and remove the rear wheels.
Required tools include: hoist or floor jacks, two safety stands, safety glasses, torque wrench, 5/16" open-end or box wrench, 7/16" open-end or box wrench, 9/16" open-end or box wrench, ratchet with 9/16", metric, and 1/2" deep well sockets, two 5/16" drill bits (very sharp), heavy duty drill, hose cutter or razor blade or sharp knife, air compressor or compressed air source, and spray bottle with dish soap/water solution.
The manual does not mention battery disconnection. No electrical work is required for this air spring installation.
Drilling is required only for the Schrader valve installation. You must drill a 5/16" (8 mm) hole in the chosen location for the inflation valve. Recommended locations are inside the fuel tank filler door, inside rear wheel wells, or in the license plate or rear bumper area. No drilling is required for the air spring assembly itself.
Yes. The stock jounce bumper must be trimmed to gain clearance for the air spring assembly's lower bracket. Measure up from the base of the jounce bumper 3/4" and mark a line. Using a box cutter or equivalent, cut the top of the jounce bumper off at that line. Use extreme caution when cutting with the cutting tool.
Yes. The manual states that the jounce bumper has been intentionally cut to support the lower bracket and will be necessary to draw the lower bracket into the jounce bumper using the U-bolts. This is a permanent modification.
Yes. Before installing the air springs, bend the emergency brake cable bracket forward slightly on both sides of the vehicle to gain clearance for the lower bracket.
Torque the 3/8" flat-head screws that attach the upper bracket to the air spring to 20 lb.-ft. (27 Nm).
Install the 90-degree swivel air fitting to the top of the air spring and tighten finger tight plus 1 1/2 turns.
Torque the 5/16" carriage bolts that attach the clamp bars to 12 lb.-ft. (16 Nm). Tighten them evenly using a cross pattern.
Torque the 3/8" U-bolts evenly to 16 lb.-ft. (22 Nm). After torquing, trim the excessive length of the U-bolts close to the nylon lock nut.
Move the lower bracket on the leaf spring to align the air spring so that it is close to being perpendicular between both brackets. The upper and lower brackets will not be parallel to each other once installed.
The flange on the lower bracket should be on the same side of the air spring as the fitting on the upper bracket. These will both face the inside of the truck once installed.
Cut the air line in half using a razor blade or hose cutter, making clean, square cuts. Do not use scissors or wire cutters, as they will damage the line.
Use zip ties to secure the air line to fixed points along the chassis. Do not pinch or kink the air line. Leave at least 2" (51 mm) of slack in the air line to allow for any movement that might pull on the line. The minimum bend radius for the air line is 1" (25 mm). Keep at least 6" (152 mm) of clearance between all air lines and the exhaust system, and avoid sharp bends and edges.
Choose one of three recommended locations for the Schrader valve: inside the fuel tank filler door, inside a rear wheel well, or in the license plate or rear bumper area. Drill a 5/16" (8 mm) hole if necessary at the chosen location, then install the Schrader valve using the supplied hardware (rubber washer, star washer, flat washer, and hex nut).
The maximum air pressure is 100 PSI (7 BAR). Never inflate beyond this pressure. However, the air pressure actually needed is dependent on load and gross vehicle weight rating.
The minimum recommended pressure is 5 PSI (0.34 BAR).
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. The air springs support the suspension but do not change the vehicle's weight capacity limits.
Compressed air can cause injury and damage to the vehicle and parts if it is not handled properly. Do not try to inflate the air springs until they have been properly secured to the vehicle.
Inflate the air springs to 40–60 PSI (2.8–4.1 BAR) and make sure there is at least 1/2" (13 mm) clearance from anything that might rub against each sleeve. Be sure to check the tire, brakes, frame, shock absorbers, and brake cables. Also verify at least 6" (152 mm) clearance from heat sources such as the exhaust system.
Inflate the air springs to 40–60 PSI (2.8–4.1 BAR) and check all connections for leaks using a spray bottle with dish soap and water solution. All leaks must be eliminated before the vehicle is road tested. If the system develops an air leak during use, check all air line connections and the inflation valve core with soapy water before deflating and removing the air spring.
After clearance, leak, heat, and fastener tests are complete, road test the vehicle. Inflate the springs to recommended driving pressures, drive the vehicle 10 miles (16 km), and recheck for clearance, loose fasteners, and air leaks.
Check air pressure weekly.
Check air pressure weekly. Always maintain normal ride height. Never inflate beyond 100 PSI (7 BAR). If the system develops an air leak, use a soapy water solution to check all air line connections and the inflation valve core before deflating and removing the air spring.
The kit is designed for vehicles with rear leaf spring suspension, an existing frame hole forward of the axle, and frame rivets that align with upper bracket holes. Contact Air Lift at (800) 248-0892 to confirm fitment for your specific year, make, and model.
You need a hoist or floor jacks, safety stands, safety glasses, torque wrench, open-end wrenches (5/16", 7/16", 9/16"), ratchet with deep well sockets, two sharp 5/16" drill bits, heavy duty drill, hose cutter or razor blade, air compressor, and spray bottle with soap/water solution.
Yes. Measure 3/4" up from the base of the jounce bumper and cut off the top using a box cutter. This is a permanent modification required for lower bracket clearance.
Upper bracket 3/8" flat-head screws: 20 lb.-ft. (27 Nm). Clamp bar 5/16" carriage bolts: 12 lb.-ft. (16 Nm). U-bolts: 16 lb.-ft. (22 Nm). Tighten carriage bolts evenly in a cross pattern.
Inflate to 40–60 PSI and verify 1/2" clearance from tires, brakes, frame, shocks, and cables. Check for air leaks with soapy water. Verify 6" clearance from exhaust. Recheck all bolt torque. Then road test 10 miles and recheck everything.
Check air pressure weekly. Maintain normal ride height. Never exceed 100 PSI. If leaks develop, use soapy water to locate them at connections and valve core before deflating.
Use a spray bottle with dish soap and water solution to check all air line connections and the inflation valve core. The soap solution will bubble at the location of any leak. All leaks must be eliminated before the vehicle is road tested. If a leak is found during use, locate it with soapy water, then deflate and remove the air spring to repair or replace the leaking component.
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