Air Lift RIDE CONTROL KIT 59501Air LiftOriginal price was $590.99. Current price is $428.99.In Stock
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1979 - 1982 Dodge D50
Confirmed to Fit
2001 - 2002 Dodge Durango
Confirmed to Fit
1983 - 1993 Dodge Ram 50
Confirmed to Fit
1990 - 1993 Isuzu Amigo
Confirmed to Fit
1991 - 1994 Isuzu Rodeo
Confirmed to Fit
1985 - 1991 Isuzu Trooper
Confirmed to Fit
1972 - 1983 Jeep CJ5
Confirmed to Fit
1972 - 1975 Jeep CJ6
Confirmed to Fit
1976 - 1986 Jeep CJ7
Confirmed to Fit
1986 - 1992 Jeep Comanche
Confirmed to Fit
1981 - 1985 Jeep Scrambler
Confirmed to Fit
1972 - 1976 Mazda B1600
Confirmed to Fit
1977 - 1978 Mazda B1800
Confirmed to Fit
1979 - 1984, 1986 Mazda B2000
Confirmed to Fit
1982 - 1984, 1987 - 1993 Mazda B2200
Confirmed to Fit
1987 - 1993 Mazda B2600
Confirmed to Fit
1997 - 1998 Mitsubishi Montero Sport
Confirmed to Fit
1998 Nissan Frontier
Confirmed to Fit
1991 - 1994 Oldsmobile Bravada
Confirmed to Fit
1993 - 1998 Toyota T100
Confirmed to Fit
1995 - 2004 Toyota Tacoma
Confirmed to Fit
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Air Lift RideControl air helper springs are air-adjustable from 5 to 100 PSI and have up to 2,000 pounds of leveling capacity, right up to the manufacturer's recommended Gross Vehicle Weight Rating.
RideControl provides more safety, stability and ride comfort. The kit fits many popular vehicles with leaf springs, including half-ton and mini pickups, full-size and mini vans, and SUVs. Both front and rear applications are available for these vehicles. Each kit includes everything you need, and is easily installed in two hours or less. End caps are made of an ultra-strong nylon composite that is as strong as steel, but weighs less and is corrosion-proof. Air Lift RideControl adjustable air springs work with your existing leaf spring suspension. Just add air when towing or hauling a heavy load, and reduce air pressure when unloaded, the air bags are fully adjustable for a great ride. Air Lift air springs eliminate sag, sway, and bottoming out. Each kit includes everything you need, and is easily installed in two hours or less. End caps are made of an ultra-strong nylon composite that is as strong as steel, but weighs less than steel and is also corrosion-proof. These rugged, durable components mean that you get reliable service from the springs for the lifetime of the vehicle. Air Lift RideControl air helper springs are air-adjustable from 5 to 100 PSI and have up to 2,000 pounds of leveling capacity, right up to the manufacturer's recommended Gross Vehicle Weight Rating. They also come with a limited lifetime warranty and an exclusive 60-day ride satisfaction guarantee.
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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21 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1979 - 1982 | Dodge D50 | — |
| 2001 - 2002 | Dodge Durango | — |
| 1983 - 1993 | Dodge Ram 50 | — |
| 1990 - 1993 | Isuzu Amigo | — |
| 1991 - 1994 | Isuzu Rodeo | — |
| 1985 - 1991 | Isuzu Trooper | — |
| 1972 - 1983 | Jeep CJ5 | — |
| 1972 - 1975 | Jeep CJ6 | — |
| 1976 - 1986 | Jeep CJ7 | — |
| 1986 - 1992 | Jeep Comanche | — |
| 1981 - 1985 | Jeep Scrambler | — |
| 1972 - 1976 | Mazda B1600 | — |
| 1977 - 1978 | Mazda B1800 | — |
| 1979 - 1984, 1986 | Mazda B2000 | — |
| 1982 - 1984, 1987 - 1993 | Mazda B2200 | — |
| 1987 - 1993 | Mazda B2600 | — |
| 1997 - 1998 | Mitsubishi Montero Sport | — |
| 1998 | Nissan Frontier | — |
| 1991 - 1994 | Oldsmobile Bravada | — |
| 1993 - 1998 | Toyota T100 | — |
| 1995 - 2004 | Toyota Tacoma | — |
Yes, the Air Lift RIDE CONTROL KIT 59503 (Part #BBCG59503) is designed to fit the 1979-1982 Dodge D50.
The Air Lift RIDE CONTROL KIT 59503 (Part #BBCG59503) fits the following vehicles: 1979-1982 Dodge D50; 2001-2002 Dodge Durango; 1983-1993 Dodge Ram 50; 1990-1993 Isuzu Amigo; 1991-1994 Isuzu Rodeo; 1985-1991 Isuzu Trooper; 1972-1983 Jeep CJ5; 1972-1975 Jeep CJ6; 1976-1986 Jeep CJ7; 1986-1992 Jeep Comanche; 1981-1985 Jeep Scrambler; 1972-1976 Mazda B1600; 1977-1978 Mazda B1800; Mazda B2000; 1982-1993 Mazda B2200; 1987-1993 Mazda B2600; 1997-1998 Mitsubishi Montero Sport; 1998 Nissan Frontier; 1991-1994 Oldsmobile Bravada; 1993-1998 Toyota T100; 1995-2004 Toyota Tacoma. Always verify your specific year, make, and model before ordering.
The Air Lift RIDE CONTROL KIT 59503 (Part #BBCG59503) fits 1979-1982 Dodge D50 models. The 2004 model year is the last year covered by this part number. For newer models, check for an updated version.
The Air Lift RIDE CONTROL KIT 59503 (Part #BBCG59503) Refer to the included instructions for installation details. Basic hand tools are typically all you need.
The Air Lift MN-332 (part numbers 59503 and 59529) is a load-assist air spring kit designed to support additional weight on the rear of a vehicle. It consists of two air sleeves that mount to the leaf springs via brackets, connected to inflation valves via air lines. The system allows you to adjust ride height and load-carrying capacity by inflating or deflating the air springs to maintain your vehicle's normal ride height under load.
The MN-332 is designed for vehicles with leaf springs, including Mazda, Toyota, Chevy, GMC, Isuzu, Nissan, Oldsmobile, and Dodge models. For Mazda and Toyota, the kit mounts forward of the axle housing. For Chevy, GMC, Isuzu, Nissan, Oldsmobile, and Dodge, it mounts behind the axle housing. If your vehicle make is not listed, you can test fitment by setting the air spring assembly on the leaf spring and checking for clearance problems or obstructions. Consult the manual or contact Air Lift at 1-800-248-0892 if you are unsure.
Your vehicle may be equipped with a rear brake proportioning valve, which could be affected by a load-assist product. Check with your vehicle's dealer before installing this kit. If your vehicle does not have a rear brake proportioning valve, or is equipped with an anti-lock brake system, installation will have no effect on brake system performance.
Yes. The Dodge Durango is equipped with an inner fenderwell liner. You have two options: (1) position the upper bracket on the outside of the liner behind the axle (Durango Option 1), or (2) trim away the liner as shown in Durango Option 2. The manual includes specific figures (14) showing both options. Refer to Section V, step 2 for details.
Required tools include: standard and metric open-end or box wrenches; ratchet with 3/8", 1/2", and 9/16" deep-well sockets; 5/16" drill bit (very sharp); 7/16" and 9/16" nut drivers; heavy-duty drill; torque wrench; hose cutter, razor blade, or sharp knife; hoist or floor jacks; safety stands; safety glasses; air compressor or compressed air source; and spray bottle with dish soap/water solution.
The kit includes: 2 air sleeves, 2 upper brackets, 2 lower brackets, 2 elbow fittings, 2 × 1/2" × 7/8" hex head bolts, 2 × 3/4" nylon nuts, 2 × 1/2" flat washers, 1 air line assembly, 6 tie straps, 2 valve caps, 2 × 5/16" flat washers, 2 rubber washers, 2 small star washers, 4 × 5/16" hex nuts, 4 hose clips, 4 × 3/4" self-tapping bolts, 2 × 3/8"-16 U-bolts, 2 clamp bars, 4 × 3/8" Nylock nuts, 4 × 3/8" flat washers, and 6 × 3/8" × 1" WHST (washers/screws).
Normal ride height is the distance between the bottom edge of the wheel-well and the center of the hub with the vehicle in the "as delivered" condition. (1) Remove unusual loads and examine your vehicle from the side to ensure it is on a level surface. (2) If necessary (for example, if leaf springs are sagging badly), use a jack to raise the rear end so the vehicle achieves the original "as delivered" ride height. (3) Measure the distance between the center of the hub and the bottom edge of the wheel-well. Record this measurement in inches—you will need it to set air pressure after installation.
The manual does not specify that the battery must be disconnected for this installation.
The manual does not specify whether wheels must be removed for installation.
Follow these steps: (1) Install the 90-degree air swivel fitting (D) to the top of the air spring using an open-end wrench, tightening on the metal hex nut only. Tighten finger-tight plus 1.5 turns—do not over-tighten. The fitting is precoated with sealant. (2) Thread the attached fitting through the upper bracket (B), positioning the elbow toward the front or rear for easier air-line access. (3) Slide the nylon nut (K) over the air fitting onto the thread post with the flat side up. (4) Tighten the nylon nut by hand to secure the bracket—hand-tight is sufficient. Ensure the bracket is tight and flat to the roll plate on both sides. (5) Loosely attach the lower bracket (C) to the bottom of the air spring using a 1/2" flat washer (L) and 1/2" hex head cap screw (J).
With the vehicle at normal ride height, set the bracket-air spring assembly on the leaf spring in your determined location (forward or behind the axle). Position the hook end of the lower bracket (C) over the spring perch or factory U-bolt. The hook end must lock over the U-bolt or perch to prevent moving along the leaf spring. Secure the lower bracket using U-bolt (E), clamp bar (F), flat washers (H), and Nylock nuts (G). Tighten to 16 ft-lbs. Note: For some Chevy/GMC S-Series Pickups and Blazer/Jimmy models, there may be a small tab on the spring perch plate that must be trimmed off using a hacksaw or die grinder for proper bracket placement.
The upper bracket (B) must be parallel and perpendicular to the lower bracket (C). Align the upper bracket so that the short leg touches the bottom of the frame rail—if it does not contact the frame rail, the warranty will be void. Using the upper bracket as a template, center-punch one hole. A welding clamp or C-clamp may help hold the bracket to the frame. Before drilling, check the back side of the frame rail for brake lines, gas lines, or electrical lines and move any interfering lines. Drill one 5/16" hole and install one WHST (I), tightening to 15 ft-lbs. Check again that the upper and lower brackets are parallel and perpendicular. Center-punch and drill the remaining two holes (minimum three of five pre-drilled holes must be used) and install the WHST (I), torquing to 15 ft-lbs. Do not over-tighten.
Yes. You must drill one 5/16" hole in the frame rail for the first WHST (I) fastener, then center-punch and drill two additional 5/16" holes for the remaining WHST fasteners. A minimum of three of the five pre-drilled holes in the upper bracket must be used. You must also drill a 5/16" hole to install the inflation valves. Before drilling the frame rail, check the back side for brake lines, gas lines, or electrical lines and move any interfering lines prior to drilling.
For most vehicles, no permanent modifications are required. However, for some Chevy/GMC S-Series Pickups and Blazer/Jimmy models, there may be a small tab on the spring perch plate that must be trimmed off using a hacksaw or die grinder for proper placement of the lower bracket. For Dodge Durango, you have two options: position the upper bracket on the outside of the inner fenderwell liner, or trim away the liner as shown in the manual.
Cut the air line assembly (AA) in two equal lengths using a hose cutter (Air Lift P/N 10530), a razor blade, or a sharp knife. A clean, square cut prevents leaks. Do not use wire cutters or scissors, as these tools may flatten or crimp the air line, causing it to leak around the O-ring seal inside the elbow fitting. When cutting the air line to length before connecting to the air fitting, cut off the air line leaving approximately 12" of extra air line and ensure a clean, square cut.
Torque specifications are: U-bolt Nylock nuts (G) to 16 ft-lbs; WHST (I) fasteners to 15 ft-lbs (do not over-tighten); lower bolt for air spring (J) to 10 ft-lbs (snug only, to prevent stripping threads). After 30 days or 500 miles, recheck all fasteners for tightness.
Install the 90-degree air swivel fitting (D) to the top of the air spring using an open-end wrench, tightening on the metal hex nut only. Tighten finger-tight plus 1.5 turns. Do not over-tighten. The fitting is precoated with sealant.
Choose a convenient location for the inflation valves. Popular locations include wheel-well flanges, license plate recess in bumper, under the gas cap access door, or through the license plate itself. Ensure there is enough clearance around the inflation valves for an air chuck. Drill a 5/16" hole to install each valve. Place a 5/16" nut (GG) and star washer (FF) on the valve, leaving enough valve exposed to extend through the hole and have room for the rubber washer (EE), flat washer (DD), and 5/16" nut (GG) and cap (CC). Approximately 1/2" of valve should be exposed to easily apply a pressure gauge or air chuck. Push the inflation valve through the hole and use the rubber washer, flat washer, and another 5/16" nut to secure it in place. Tighten the nuts to secure the assembly.
Route the air line along the frame to the air fitting on the air spring. Keep at least 6" of clearance between the air line and heat sources such as exhaust pipes, muffler, or catalytic converter. Avoid sharp bends and edges. Use plastic tie straps (BB) to secure the air line to fixed, non-moving points along the chassis. Tie straps should be tight but not pinch the air line. Where there are no holes to secure straps, use the air line clip (HH) and self-tapper (II) to secure the air line to the frame. Leave at least 2" of slack to allow for any movement that might pull on the air line. Cut the air line leaving approximately 12" of extra air line with a clean, square cut. Insert the air line into the air fitting by pushing it into the 90-degree swivel fitting until it bottoms out (9/16" of air line should be in the fitting).
With the bottom of the air spring still loose, inflate it to approximately 10 p.s.i. Use the slotted adjustment in the lower bracket to correctly align the air spring between the upper and lower bracket by tapping it inboard or outboard for proper alignment. There should be a symmetrical cushion of air around the base of the air spring when correctly positioned. When aligned, tighten the lower end by holding the air spring and turning the bolt with a 3/4" open-end wrench. Snug (10 ft-lbs) will be sufficient and will also prevent stripping the threads. Do not attempt to hold the air spring with any type of tool.
The minimum air pressure is 5 p.s.i. The maximum air pressure is 100 p.s.i. However, the actual air pressure needed depends on your load and vehicle's Gross Vehicle Weight Rating (GVWR), which may be less than 100 p.s.i. Always maintain normal ride height by adjusting air pressure as necessary. Check your vehicle owner's manual and do not exceed the maximum load listed for your vehicle. Failure to maintain correct minimum pressure (or pressure proportional to load), bottoming out, overextension, or rubbing against another component will void the warranty.
Compressed air can cause injury and damage to the vehicle and parts if not handled properly. Do not try to inflate the air springs until they have been properly secured to the vehicle. Never inflate beyond 100 p.s.i. Do not exceed the vehicle's maximum Gross Vehicle Weight Rating (GVWR) as indicated by the vehicle manufacturer. Always add air to springs in small quantities, checking the pressure frequently, as sleeves require less air volume than a tire and inflate quickly. Should it become necessary to raise the vehicle by the frame, make sure the system is at minimum pressure (5 p.s.i.) to reduce tension on the suspension/brake components. Failure to maintain correct minimum pressure, prevent bottoming out, overextension, or rubbing will void the warranty.
Inflate the air spring to 60 p.s.i. Spray all connections and the inflation valves with a solution of 1/5 liquid dish soap and 4/5 water to check for leaks. You should be able to 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 normal ride height, but not less than 5 p.s.i. Check the air pressure again after 24 hours. A 2 to 4 p.s.i. loss after initial installation is normal. Retest for leaks if the loss is more than 5 lbs.
Perform the following checks: (1) Clearance Test—inflate the air springs to 60 p.s.i. and ensure at least 1/2" clearance around each sleeve from anything that might rub (tire, brake drum, frame, shock absorbers, brake cables). (2) Leak Test—inflate to 60 p.s.i., check all connections for leaks with soapy water solution. All leaks must be eliminated before road testing. (3) Heat Test—ensure at least 6" clearance from heat sources (exhaust, muffler, catalytic converter). (4) Fastener Test—recheck all bolts for proper torque (WHST: 15 ft-lbs; U-bolt lock nuts: 16 ft-lbs; lower bolt: 10 ft-lbs). (5) Road Test—inflate springs to 25 p.s.i. (50 p.s.i. if loaded), drive 10 miles, and recheck for clearance, loose fasteners, and air leaks.
Check the air pressure weekly. Always maintain normal ride height. Never inflate beyond 100 p.s.i. If you develop 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. When increasing load, always adjust the air pressure to maintain normal ride height. 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. After 30 days or 500 miles (whichever comes first), recheck the air spring system. If any part shows signs of rubbing or abrasion, identify and move the source if possible. Check all fasteners for tightness.
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" 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) If it still leaks, check the threaded connection by tightening the swivel fitting another 1/2 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, 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 connection by removing the air line from the barbed-type fitting. Do not cut it off, as this will usually nick the barb and render the fitting useless. Cut the air line off a few inches in front of the fitting and use a pair of pliers or vise-grips to pull/twist the air line off the fitting.
If the system is not maintaining air pressure, check the following in order: (1) Leak test the air line connections and threaded connection of the elbow into the air spring using a soapy water solution. (2) Leak test the inflation valve for leaks at the air line connection or dirt/debris in the valve core. (3) Inspect air lines to ensure they are not pinched—tie straps may be too tight; loosen or replace the strap. (4) Inspect the air line for holes and cracks and replace as needed. (5) Check for a kink or fold in the air line and reroute as needed. If these steps do not resolve the problem, the issue is most likely a failed air spring (factory defect or operating problem). Call Air Lift at 1-800-248-0892 for assistance or a replacement air spring.
Torque U-bolt nuts to 16 ft-lbs, WHST fasteners to 15 ft-lbs, and lower air spring bolt to 10 ft-lbs. Tighten the elbow fitting finger-tight plus 1.5 turns. Do not over-tighten.
Inflate to 60 p.s.i. and check for 1/2" clearance around each sleeve. Test all connections for leaks with soapy water. Verify 6" clearance from heat sources. Recheck all bolt torque. Then inflate to 25 p.s.i. (50 p.s.i. if loaded), drive 10 miles, and recheck clearance and fasteners.
Spray all air line connections and the inflation valve with a soapy water solution to check for leaks. Look for bubbles. If found, check the air line connection at the swivel fitting by deflating, removing the line, trimming 1" off the end with a clean square cut, and reinserting. If the threaded connection leaks, tighten the swivel fitting another 1/2 turn. If the inflation valve leaks, tighten the valve core with a valve core tool or remove and reinsert the air line at the barbed fitting (do not cut it off—use pliers to pull/twist it off).
Inspect the air line for pinching caused by tie straps that are too tight. Loosen or replace the strap. Check for kinks or folds in the air line and reroute as needed. Ensure the air line has at least 2" of slack to allow for suspension movement.
Inspect the air line for holes and cracks. If found, the air line assembly must be replaced. Contact Air Lift at 1-800-248-0892 for a replacement air line assembly.
If you have tested for leaks at air line connections, threaded connections, inflation valves, pinched lines, holes, cracks, and kinks, and the problem persists, the issue is most likely a failed air spring (factory defect or operating problem). Call Air Lift Technical Service at 1-800-248-0892 for assistance or a replacement air spring.
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