Reference OE/OEM Number:

Mercedes 251 320 00 25
Mercedes 251 320 03 25
Mercedes 251 320 04 25
Mercedes 2513200025
Mercedes 2513200325
Mercedes 2513200425

Fitment:

2010 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC 213Cu. In. V6 GAS DOHC Naturally Aspirated

2010 Mercedes-Benz R350B luetec 4Matic Wagon 4-Door3.0L 2987CC V6 DIESEL DOHC Turbocharged

2009 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2009 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC 213Cu. In. V6 GAS DOHC Naturally Aspirated

2009 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2008 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2008 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC 213Cu. In. V6 GAS DOHC Naturally Aspirated

2008 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2007 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2006 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2013 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2013 Mercedes-Benz R350 Base Wagon 4-Door3.5L 3498CC 213Cu. In. V6 GAS DOHC Naturally Aspirated

2013 Mercedes-Benz R350 Bluetec 4Matic Wagon 4-Door3.0L 2987CC V6 DIESEL DOHC Turbocharged

2012Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2012 Mercedes-Benz R350 Bluetec 4Matic Wagon 4-Door3.0L 2987CC V6 DIESEL DOHC Turbocharged

2011 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

2011 Mercedes-Benz R350 Bluetec 4Matic Wagon 4-Door3.0L 2987CC V6 DIESEL DOHC Turbocharged

2010 Mercedes-Benz R350 4Matic Wagon 4-Door3.5L 3498CC V6 GAS DOHC Naturally Aspirated

Air Suspension Spring

Spring suspensions use semi-elliptic leaf springs to cushion a load from road shock. As one of the most commonly used suspensions, spring ride consists of several layers of flexible steel strips referred to as a “leaf pack.”

The strips are joined together to act as a single unit. The long and narrow arch-shaped plates are attached to the frame of a trailer, resting above the trailer’s axle.

An air spring system replaces the traditional spring suspension, replacing steel coil springs (or leaf suspension) above the vehicle wheels with airbags made of rubber and polyurethane. These airbags are inflated by an onboard air compressor or electric pump, to a certain pressure to behave in a similar way to traditional springs. The air direction is controlled by air valves that let the air go into different parts of the system to inflate.

Air Suspension Spring Benefits

1.Reduce Poor Braking and Steering
Front tires account for the majority of braking and steering. Air springs ensure that weight is properly distributed to all four tires for optimal braking and steering.
2.Eliminate Poor Headlight Aim
Your headlights should be on the road and not in the trees. Only level and stable vehicles provide safe and proper headlight aiming—critical for safe night driving.
3.Reduce Trailer Sway
There is nothing worse than feeling your whole vehicle or trailer sway with one strong burst of wind. When towing a trailer, air springs permit precise tow-vehicle-to-trailer-height adjustment for exact alignment, virtually eliminating trailer sway no matter the weather.
4.Eliminate Rough Ride
Progressive rate air springs significantly improving ride quality by better absorbing road inputs, while keeping your tires on the road for better handling.
5.Reduce Body Roll
The increased spring rate from air springs vastly improves vehicle stability especially in cross winds and emergency maneuvers. Less body roll can increase driver confidence of high center of gravity vehicles in less than ideal conditions.
6.Eliminate Bottoming Out
Worried about bottoming out on road bumps and driveways? Air springs restore normal ride height when heavily loaded or towing, reducing suspension wear and eliminating crashing on bumps.

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

OEM/ODM Service:

- If you want to show your own brand LOGO on the goods such as cable, package bag, label or any where. Our OEM and ODM service is always ready to do it. Please contact with our sales team to get best support.

We develop and source great consumer products that consumers love to buy. We outperform our competition by bringing products to market faster and at higher value for our customers.Our unique production and sourcing process enables us to work very differently than buyingoffices and traditional trading companies, giving more responsibility and freedom to ouremployees.