Reference OE/OEM Number

REAR RIGHT : 37 12 1 095 580 / 37121095580

37 12 6 750 356 / 37126750356

REAR LEFT : 37 12 1 095 579 / 37121095579

37 12 6 750 355 / 37126750355

Manufacturer part NO.

37126750355 37126750356

37121095579 37121095580

37 12 6 750 355 37 12 6 750 356

37 12 1 095 579 37 12 1 095 580

Fitment

For BMW X52001-2006 E53 Seriesl6 3.0i PetrolSport Utility

For BMW X52001-2006 E53 Seriesl6 3.0i DieselSport Utility

2001-2006 BMW X5 3.0i Sport Utility 4-Door

2003-2006 BMW X5 4.4i Formula 1 Sport Utility 4-Door

2000, 2002-2006 BMW X5 4.4i Lujo Sport Utility 4-Door

2000-2006 BMW X5 4.4i Sport Utility 4-Door

2000, 2002-2006 BMW X5 4.4i Top Line Sport Utility 4-Door

2002-2003 BMW X5 4.6is Sport Utility 4-Door

2004-2006 BMW X5 4.8is Sport Utility 4-Door

Air Suspension Spring

An air spring, load-carrying component of an air suspension system used on machines, automobiles, and buses. A system used on buses consists of an air compressor, an air-supply tank, leveling valves, check valves, bellows, and connecting piping. Basically, an air-spring bellows is a column of air confined within a rubber and fabric container that looks like an automobile tire or two or three tires stacked on top of one another. The check valves admit additional air to the bellows from the air-supply tank to maintain vehicle height when the load is increased, and the leveling valves vent excess air from the bellows when the vehicle rises because of unloading. The vehicle thus remains at a fixed height regardless of load. Although an air spring is flexible under normal loads, it becomes progressively stiffer when compressed under an increased load.

Air Suspension Spring composition

1. Air fitting: A tapped hole allowing for the spring to be fed from the air compressor
2. Nut/bolt/mount: The method for attaching the air spring to the component. Some air springs incorporate a bolt and air fitting combination device.
3..Bead plate: Crimped metal plate enclosing the spring and allowing attachment. This is typically forged steel, cast zinc alloy or cast aluminum.
4. Bellows: The physical, multi-layer material withholding the compressed gas. Usually made of neoprene or rubber.
5. Girdle: Only found in air springs of convoluted design, separating the bellows chambers.

6. Bumper: An optional layer of padding protecting the piston from damage if the air spring fails.

7. Piston: The component attached to the machinery requiring suspension, which is in turn supported by the enclosed air. The piston housing is typically attached with further hardware.

Air Suspension Spring Benefits

1.Comfort

One of the main benefits of air suspension cars is the improved comfort behind the wheel, making it good for daily driving. The adjustable air suspension makes for a more comfortable ride on poor quality roads and can improve control when off-roading. The use of airbags above your wheels, rather than springs, also improves the quality of the journey for passengers.

2. Reduced noise and vibration

Another advantage of air suspension is less wear and tear on the suspension system and vehicle components, due to reduced harshness and vibration, particularly with heavy-duty driving. Air suspension compensates for potholes, uneven surfaces and speed bumps in the road allowing your vehicle to glide easily over the road surface.

3. Versatility on the road

An air spring system allows the driver to adjust the car to suit their personal preferences for ride comfort and handling. When the driver can choose between a harder drive for motorway driving or a softer feel for demanding roads, the driver maintains control no matter the terrain. Higher cornering speeds and greater levels of control when turning corners can be achieved with air suspension, as the vehicle is better suited to the conditions of the road. An adjustable suspension that can lower the vehicle to the ground means the drag can potentially reduce at higher speeds. Additionally, the ability to raise the car for everyday use is extremely handy for off-road driving.

4. Versatility on load

Another advantage of air suspension is its versatility on load. The height of the car can be adjusted according to the load, the ‘kneel’ or ‘raise’ functions making loading easier from the outset. The purpose of air suspension is to give consistency across all wheels, and there is a lower risk of body roll when turning corners, less risk of breakages and less load shifting and damage caused due to reduced vibrations through the suspension. Plus, better control due to increased firmness provides improved towing capabilities for larger vehicles.

5.Fuel economy

As vehicles with air suspension can be adjusted to road type, they benefit from better fuel economy. For example, a lower ride height for motorway driving means better aerodynamics and reduced wind resistance. Conversely, a suspension that is better suited to a particular road surface with better control can achieve higher corner speeds and lead to time-saving on routes with many turns.

Air Suspension Spring Work

Air spring, in technology, elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded. The combination of force and displacement in a deflected spring is energy, which may be stored when moving loads are being arrested or when the spring is wound up for use as a power source.

Air Suspension Spring Features And Function

1. An adjustable configuration allows the user to fine tune desired damping, either continuously or at discrete settings.
2. A reducible gas spring has an adjustment style for gas shocks in which gas is let out to permanently reduce force capacity.
3. In a locking gas spring the position can be locked at ends or in the middle of stroke.

4. Valves can be included for fluid absorbers, a valve or port, which can be used to increase or decrease fluid volume or pressure.

Air spring, in technology, elastic machine component able to deflect under load in a prescribed manner and to recover its initial shape when unloaded. The combination of force and displacement in a deflected spring is energy, which may be stored when moving loads are being arrested or when the spring is wound up for use as a power source.

Air Suspension Spring Real Photo:

About Us

HONGGU Air Springs are highly durable, precisely engineered and cost-effective for use in a wide variety of actuation and vibration isolation applications. With time-tested designs incorporating fabric-reinforced Wingprene or natural rubber flex-member construction and corrosion-protected end retainers, HONGGU Air Springs provide superior quality and performance. As actuators, they can provide either linear or angular motion.

These air bag products offer a favorable stroke-to-compressed-height ratio when compared to air cylinders, and they can accept a wide variety of actuation media such as air, water, nitrogen or anti-freeze. As isolators, they are effective in reducing the harmful effects of vibration. They also can simultaneously isolate vibration and regulate load height as well as allow for consistent vibration isolation under varying loads.

HONGGU supplies air springs for the majority of all light vehicles based on air suspension systems, making us one of the leading global air spring manufacturers.

Our products and technologies can be delivered separately or as a unit with the damper. The HONGGU portfolio ranges from front and rear axle air springs, to switchable multi-chamber air springs Our comprehensive air springs know how makes us a reliable and trusted component and module supplier for air spring applications of all sorts.

The key element in air springs for light vehicles are the rubber bellows. These essentially determine the comfort and service life properties. HONGGU offers three different types of bellows – axial, cross-ply – which differ in terms of the structure of their embedded reinforcing fibers.

In an axial sleeve, the fibers embedded in the elastomer run axially to the deflection direction. The cross-ply bellows has two layers of reinforcing elements, placed at an angle to each other. Unlike in a fabric, these elements are not connected. The cross-axial bellows, combines the great torsion decoupling capability of an axial sleeve with the dimensional stability of a cross-ply bellows.

FAQ

Q1:What's your advantage?
1. Resonable price ,good service
2. Reliable quality , long working life
3. Quick and safe modes of payment
4. Ships items timely and quickly
5. Best Warranty,easy return
6. Our products are exported to most countries in the world.

Q2:To which places have you exported?
North America, Europe, Middle East, Africa, Southeast Asia?and so on.

Q3:How about your delivery time?
5-7 Working days after receiving your payment.

Q4:Product categories
1. Air Suspension Springs and Shock Absorbers
2. Passenger Car Air Spring Rubber
3. Truck Suspension Cabin Air Springs
4. Spare Parts for Air Suspension Shock Absorbers
5. Convoluted Air Springs
6. Air Suspension Compressor

7.Engine Turbocharger
8. Power Steering Pump

Q5.How to guarantee your after sales service?
1.Strict inspection during production
2. Recheck the products before shipment to ensure our packaging in good condition
3. Track and receive feedback from our customers

Q6.What will you do for customer's complaint?
We will respond quickly to our customers within 24 hours.

Advantage

1. we are top 3 of professional air suspension manufacturer in China.
2. our factory has 120 staff, and we only produce 100% newly air suspension products for 10 years.
3. we have cooperated with 80 overseas companies with stable relationships. many are also brands or big sellers at Amazon or EBAY websites.
4. we have our own cars to test our products,except normal test machine and IATF16949:2016 certificate standard.
5. we have complete production line, Mercedes Benz,BMW Audi,Porsche,Land Rover,Volkswagen-these are our products,we has complete products line.
6. Our air suspension/air compressor/air strut/air suspension parts 100% NEWLY manufactured to instead OEM
7. We manufacture air suspension/air strut/air compressor to instead OEM ;
8. Constant temperature workshop for core parts;
9. Japan automatic welding machine to weld