BMW 520d Front Shock Absorbers

Product Description

BMWïs air suspension system, commonly referred to as "Airmatic," is available on various models and provides an adaptive ride experience by automatically adjusting the suspension based on driving conditions. If you need to replace the air suspension components on a BMW, itïs essential to understand the different parts involved and your options.

Key Components of the BMW Air Suspension

1. Air Suspension Spring (Air Spring or Air Bag):

   • These components replace traditional coil springs. They use pressurized air to provide a smoother, more adaptable ride.
   • Air springs can leak or fail over time, especially under harsh driving conditions, which can lead to sagging, uneven ride height, or suspension warning lights.

2. Air Struts/Shocks:

   • These are shock absorbers integrated with air springs. They adjust the firmness based on vehicle load, speed, and road conditions to improve ride comfort and handling.
   • BMW uses both front and rear air struts on models equipped with full air suspension.

3. Air Suspension Compressor:

   • The compressor supplies the air needed for the suspension system to maintain proper height and firmness.
   • A failing compressor can cause the air suspension to deflate or not adjust as intended.

4. Height Sensors:

   • These sensors detect the ride height and provide feedback to the control module, which adjusts the air springs accordingly.
   • Faulty sensors can lead to incorrect ride height adjustments or a system failure.

Symptoms of Air Suspension Problems

• Vehicle Sagging: If one side or corner of the vehicle is sagging, it could indicate a leak in the air spring or a faulty air strut.
• Bouncing Ride: A rough or bouncy ride suggests issues with the air struts or shocks.
• Air Suspension Warning Light: BMWs equipped with air suspension will display a warning light on the dashboard if thereïs a problem with the system.
• Compressor Running Continuously: A constantly running compressor could indicate a leak or failure in the air spring, causing the system to work harder to maintain pressure.

Replacement Options

1. OEM Replacement:

   • Genuine BMW air suspension components are designed specifically for your model and offer the best fit and performance.
   • These can be found at BMW dealerships or trusted parts suppliers, though they are often more expensive.

2. Aftermarket Air Suspension Components:

   • Reputable brands such as Arnott, Air Lift, and Bilstein offer high-quality replacement air suspension parts for BMW models at a lower cost.
   • Some aftermarket parts can even offer upgraded performance or durability compared to OEM parts.

3. Conversion Kits:

   • If you prefer a more permanent and cost-effective solution, some companies offer coil spring conversion kits. These kits replace the air suspension with traditional coil springs and shocks, eliminating the need for air components.
   • Strutmasters and Unity Automotive are two brands that offer conversion kits for BMW models with air suspension.

Replacement Process and Costs

• Installation: If youïre mechanically inclined, you can replace air suspension components yourself, but itïs typically recommended to have a professional do the work due to the complexity of the system.