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. More driver comfort due to the reduction in noise, harshness, and vibration on the road that can cause driver discomfort and fatigue
2. Less wear and tear on the suspension system due to reduced harshness and vibration of heavy-duty driving
3. Trailers last longer with air suspension spring because the system components don't take on as much vibration
4. Air suspension spring reduces the tendency of short wheelbase trucks to bounce over rougher roads and terrain when the vehicle is empty
5. Air suspension spring improves the ride height based on the load weight and a vehicle's speed
6. Higher corner speeds due to air suspension spring being better suited to the surface of the road

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

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 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

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