Air Lift Air Lift 1000 Air Spring Kit 60855Air LiftOriginal price was $206.99. Current price is $156.86.Out of Stock
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1997 - 2005 Chevrolet Venture
Confirmed to Fit
1997 - 2004 Oldsmobile Silhouette
Confirmed to Fit
1999 - 2005 Pontiac Montana
Confirmed to Fit
1997 - 1998 Pontiac Trans Sport
Confirmed to Fit
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AD-938 LS user guide.pdf
MN-330_60748.pdf
AD-985-ALC-Warranty- Flyer.pdf
Providing up to 1,000 lbs. of load-leveling capacity, Air Lift's air bag kits provide greater safety and comfort when you're carrying a heavy load.
Air Lift adjustable air helper springs level your load, and give your truck, van, or SUV a safer, more comfortable ride. Air springs are easy to install inside the existing coil spring with common mechanic's tools. Just add air when towing or hauling a heavy load, and reduce air pressure when unloaded, they are fully adjustable for a great ride. Air Lift air springs eliminate sag, sway, and bottoming out. They are made with rugged, durable components for long, reliable service. Air Lift 1000 kits fit many popular customer vehicles with coil springs. They're designed to: add support to rear springs on many popular SUVs, replace OEM front air springs on P-30 motor homes, provide front end support for snowplows, winches, etc., improve muscle car traction for drag racing, and improve ride and handling for full-size vans and trucks with front coil springs. Air adjustable with quick connecting, easy-to-use air fittings, Air Lift 1000 air helper springs have a typical max pressure of 35 PSI on cars and SUVs, and 90 PSI on motorhomes. They also have up to 1000 pounds of leveling capacity, right up to the manufacturer's recommended Gross Vehicle Weight Rating. Air Lift 1000 kits also come standard 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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4 compatible vehicles
| Year | Make & Model | Notes |
|---|---|---|
| 1997 - 2005 | Chevrolet Venture | — |
| 1997 - 2004 | Oldsmobile Silhouette | — |
| 1999 - 2005 | Pontiac Montana | — |
| 1997 - 1998 | Pontiac Trans Sport | — |
The Air Lift MN-330 (part number 60748) is an air spring suspension system for the rear of vehicles. It works by inserting air cylinders into the coil springs to provide adjustable suspension support. Air pressure can be adjusted to level the vehicle, improve ride comfort, and enhance stability. The system allows you to maintain a level vehicle even when carrying variable loads.
The Air Lift MN-330 is designed for catalog-listed applications on cars, vans, light trucks and motorhomes with coil spring rear suspension. The manual does not provide a specific list of compatible vehicle models or years. Contact Air Lift Company at (800) 248-0892 or (517) 322-2144 to confirm compatibility with your specific vehicle before purchasing.
Yes. The air cylinders are designed to be inserted into existing coil springs. The installation process involves removing the coil springs, cutting the rubber bump stop, drilling a hole in the lower spring seat, and reinstalling the springs with the air cylinders inside them. This system works with the factory coil spring setup.
You will need: a drill with 3/4" and 5/16" drill bits, pliers, a jack and safety stands, a socket set or wrench for shock absorber bolts, and an air compressor or pump to inflate the cylinders. The manual recommends a liquid soap and water solution for leak testing. An air hose is needed to access the inflation valve after installation.
The kit includes air cylinders, a template for drilling, air line clamps, and a rubber washer for the inflation valve. The manual references a tee fitting and inflation valve but does not explicitly state whether these are included or must be purchased separately. Contact Air Lift at (800) 248-0892 to confirm what is included in kit 60748.
The installation instructions require removing the lower shock absorber attaching bolts in step 1 to access the coil springs. The manual states 'Attach shock absorbers if removed earlier in the installation' in steps M and J of the air line routing sections, suggesting they may be removed but are reattached before final inflation. Confirm with your vehicle's service manual whether full shock removal is necessary or only the lower bolts.
The manual does not mention disconnecting the battery. No electrical work is required for this air spring installation. However, if your vehicle has electronic suspension components or sensors, consult your vehicle's service manual or contact Air Lift at (800) 248-0892 before proceeding.
The manual does not specify an installation time. Installation complexity depends on your vehicle's design, access to the lower spring seat, and whether you choose tee or dual air line routing. Professional installation is recommended if you are not experienced with suspension work. Contact Air Lift at (800) 248-0892 for installer referrals.
Yes. Two holes must be drilled: a 3/4" hole in the lower spring seat (using the provided template) and a 5/16" hole for the inflation valve. The 3/4" hole is drilled after the rubber bump stop is cut. All burrs and sharp edges must be removed after drilling. These are permanent modifications to your vehicle.
The bottom two sections of the rubber bump stop must be cut off from the upper spring seat and discarded. This is shown in Figure 1 of the manual. The bump stop is cut before drilling the 3/4" hole in the lower spring seat.
Cut out circle 'B' on the provided template and place it onto the lower spring seat with a dab of grease to hold it in position. Center punch the location, then drill a 3/4" hole. Remove all burrs and sharp edges after drilling. The template ensures the hole is positioned correctly for the air cylinder stem.
Insert the air cylinder into the coil spring with the stem at the bottom. After insertion, raise the axle or lower the body to install the coil spring into the spring seats and rotate it to the proper location. The stem must point downward toward the lower spring seat where the 3/4" hole was drilled.
A tee air line installation is recommended for most vehicles. Use dual air lines only if weight in the vehicle varies from one side to the other and unequal pressures are needed to level the load, or to compensate for axle torque transfer in racing applications. The tee configuration allows a single inflation valve to supply both cylinders equally.
1. Slide an air line clamp onto the air line. 2. Push the air line over the barbed stem, covering all the barbs. 3. With pliers, compress the ears on the air line clamp and slide it forward until it fully covers the barbed section. Repeat this procedure for each connection. Leave sufficient slack in the air line to prevent strain during axle motion.
Route air lines along the cross member, lower control arm, or upper spring seat to the air cylinder. Keep air lines at least 8 inches away from the exhaust system to prevent melting. Leave sufficient slack to prevent strain during axle motion. Secure the lines with plastic straps or wire. Ensure tailpipe clearance of at least 2-3 inches from the air cylinders.
The inflation valve can be mounted in the gas cap well, trunk, rear bumper, fender flange, or behind the license plate. Choose a location that is protected from weather and accessible with an air hose. A 5/16" hole must be drilled for the valve. The rubber washer provides an outside weather seal.
Torque the lower shock absorber attaching bolts to 25 ft. lbs. This is done after the coil springs and air cylinders are installed and the axle is raised or body is lowered to position the springs properly.
Raise the axle or lower the body until the air cylinders lightly touch both the upper and lower spring seats. Check that the tailpipe has at least 2-3 inches of clearance from the air cylinders. If necessary, loosen clamps and rotate or move the cylinders to obtain additional clearance. Install any heat shields if provided. Reattach shock absorbers if they were removed. Only then proceed to inflate the cylinders.
Inflate the cylinders to 25 lbs. air pressure initially. This is the maximum operating pressure. The minimum pressure that must be maintained at all times is 5 PSI. After the vehicle is loaded, adjust the pressure downward to level the vehicle and achieve desired ride comfort.
Minimum air pressure: 5 PSI. Maximum air pressure: 25 PSI. The minimum pressure must be maintained at all times to prevent chafing or coil pinch. Failure to maintain minimum pressure will void the warranty. Always inflate to 25 PSI before adding payload to allow the air cylinder to properly mesh with the coil spring.
Two holes are required: a 3/4" hole in the lower spring seat (for the air cylinder stem) and a 5/16" hole for the inflation valve. Use the provided template to locate the 3/4" hole. Remove all burrs and sharp edges after drilling.
The maximum air pressure is 25 PSI. Do not exceed this pressure. Always start with the vehicle level or slightly above, and when in doubt, add air gradually. For motorhomes, start with 50-100 PSI in the rear because they are typically heavily loaded. Adjust pressure up and down to find the best ride while maintaining stability.
No. Adding air springs will not change the weight ratings (GAWR, GCWR, or GVWR) of your vehicle. You must not exceed the vehicle manufacturer's maximum gross vehicle weight rating. Exceeding the GVWR is dangerous and voids the Air Lift warranty.
Yes, 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, support the axle with jack stands to take the tension off the air springs. This prevents unnecessary stress on the cylinders during extended service.
If you suspect the air cylinders have bottomed out, increase the air pressure. Bottoming out occurs when the cylinder compresses fully and loses its ability to support the load. Increasing pressure prevents this condition and ensures proper suspension function.
If the front of the vehicle dives while braking, increase the pressure in the front air bags if equipped. This improves braking stability by reducing the amount of weight transfer to the front axle during deceleration.
After installation: 1. Test for air leaks by applying a liquid soap and water solution to all valve cores, fittings, and connections. 2. Lower the vehicle to the ground. 3. Recheck air pressure after 24 hours. A 2-4 PSI loss after initial installation is normal. If pressure has dropped more than 5 PSI, re-test for leaks with soapy water solution. 4. Read the Maintenance & Operation Tips before operating the vehicle.
A 2-4 PSI loss after initial installation is normal. Recheck the pressure 24 hours after installation. If the pressure has dropped more than 5 PSI, test all air line connections and valve cores with a soapy water solution to locate and repair the leak.
Check the air pressure weekly. Maintaining proper pressure is critical for suspension performance and to prevent warranty voidance. Always maintain at least 5 PSI to prevent chafing or coil pinch. Failure to maintain minimum pressure will void the warranty.
1. Check pressure weekly. 2. Always maintain at least 5 PSI to prevent chafing or coil pinch. 3. If an air leak develops, use a soapy water solution to check all air line connections and the valve core before removing the cylinder. 4. Adjust tire inflation pressure in proportion to any overload condition—increase 2 PSI above normal (not to exceed tire manufacturer's maximum) for each 100 lbs. additional load on the axle.
If properly installed and maintained, air springs can last indefinitely. Proper maintenance includes checking pressure weekly, maintaining at least 5 PSI at all times, and promptly repairing any air leaks. Failure to maintain minimum pressure will void the warranty.
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, though it requires more effort. A dedicated air compressor system is not required.
If the vehicle's headlights are shining into the trees or the vehicle is leaning to one side, raise the air pressure to correct the problem and level the vehicle. Start with the vehicle level or slightly above. When in doubt, add air. Adjust pressure up and down to find the best combination of level, ride comfort, and stability.
Yes. It may be necessary to maintain different pressures on each side of the vehicle. Loads such as water, fuel, and appliances will cause the vehicle to be heavier on one side. As much as a 50 PSI difference is not uncommon when loads are unevenly distributed.
When carrying a payload, increase the tire inflation pressure in proportion to the overload condition. Air Lift recommends a 2 PSI increase above normal (not to exceed the tire manufacturer's maximum) for each 100 lbs. of additional load on the axle.
Apply a liquid soap and water solution to all valve cores, fittings, and connections. Bubbles will form at the location of any leak. If a leak is found, check all air line connections and the valve core before removing the cylinder. Ensure all air line clamps fully cover the barbed sections.
A rough and harsh ride may be due to either too much or too little air pressure. Try different pressures to determine the best ride comfort. If the vehicle rocks and rolls, adjust the air pressure to reduce movement. Stability issues such as bounce, dive during braking, and sponginess usually require an increase in pressure.
If the vehicle's headlights are shining into the trees or the vehicle is leaning to one side, it is not level. Raise the air pressure to correct either of these problems and level the vehicle. Start with the vehicle level or slightly above, and adjust pressure gradually until the desired level is achieved.
The MN-330 is designed for catalog-listed applications on cars, vans, light trucks, and motorhomes with coil spring rear suspension. Contact Air Lift at (800) 248-0892 to confirm compatibility with your specific vehicle before purchasing.
Torque the lower shock absorber attaching bolts to 25 ft. lbs. after installing the coil springs and air cylinders.
Minimum: 5 PSI (must be maintained at all times). Maximum: 25 PSI. Start at 25 PSI before loading, then adjust downward to level the vehicle and achieve desired ride comfort.
Check pressure weekly. Always maintain at least 5 PSI to prevent chafing or coil pinch. Failure to maintain minimum pressure voids the warranty.
Apply a liquid soap and water solution to all valve cores, fittings, and air line connections. Bubbles will form at the leak location. Check that all air line clamps fully cover the barbed sections of the fittings. If the clamp is not fully covering the barbs, compress the clamp ears with pliers and slide it forward until it fully covers the barbed section. If the leak persists after checking all connections, the valve core may be defective.
A 2-4 PSI loss after initial installation is normal. If the pressure has dropped more than 5 PSI, there is a leak in the system. Test all air line connections and valve cores with a soapy water solution to locate the leak. Ensure all air line clamps fully cover the barbed sections. If no leak is found at the connections, the valve core or cylinder may be defective.
Raise the axle or lower the body until the air cylinders lightly touch both the upper and lower spring seats. This ensures proper positioning and load support. If the cylinders still do not touch after adjustment, verify that the 3/4" hole in the lower spring seat is correctly positioned using the provided template.
The tailpipe must have at least 2-3 inches of clearance from the air cylinders to prevent heat damage. If clearance is insufficient, loosen the air line clamps and rotate or move the cylinders to obtain additional clearance. If heat shields are provided with the kit, install them to protect the cylinders from exhaust heat.
Air lines must be kept at least 8 inches away from the exhaust system to prevent melting. If the air line is too close, reroute it along the cross member, lower control arm, or upper spring seat, maintaining the 8-inch clearance. Secure the line with plastic straps or wire to keep it in position.
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