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This Febi Bilstein Air Suspension Spring (part number 38509) is designed for the rear of compatible vehicles, offering a direct replacement for a bellows-type air spring. It provides restored ride height and comfort by effectively managing air pressure. A key benefit is its durable construction featuring a steel rolling piston. However, installation requires professional expertise, and it is sold individually, meaning two may be needed for a full axle replacement.
| Model Part Number | 38509 |
|---|---|
| Brand | febi bilstein |
This air suspension spring is sold individually. For most vehicles, you will need two units to replace both rear springs for consistent performance and ride height across the axle. Always verify your vehicle's requirements.
An air suspension spring uses a bellows filled with compressed air to support the vehicle's weight, allowing for a more adjustable and comfortable ride compared to traditional coil springs. It helps maintain a consistent ride height regardless of load.
Installation of air suspension components requires specialized tools, knowledge of pneumatic systems, and safety precautions. It is strongly recommended to have this part installed by a qualified mechanic.
'Bellows type' refers to the flexible, accordion-like rubber or synthetic sleeve that expands and contracts to adjust the spring's height and stiffness based on air pressure.
Common signs include a sagging rear end, a consistently low ride height, air leaks audible from the suspension area, or a bumpy and harsh ride. The vehicle's air suspension warning light may also illuminate.
Warranty information is typically provided by the retailer or manufacturer at the time of purchase. Please refer to your sales receipt or contact the seller for specific warranty details.
Check for air leaks in the suspension lines, fittings, or the spring itself. Inspect the compressor and leveling sensors for proper operation. Replace any faulty components.
Ensure the air spring is correctly installed and inflated to the proper pressure. Inspect other suspension components (shocks, bushings) for wear.
Verify power supply to the compressor. Check air lines for blockages or leaks. Test the compressor and leveling valve for functionality.
Inspect the air lines supplying each spring for leaks or restrictions. Check the leveling system for calibration issues or sensor faults.
Setup: Installation of this air suspension spring should only be performed by a qualified mechanic experienced with air suspension systems. The process typically involves safely lifting the vehicle, disconnecting the old spring, and connecting the new unit, ensuring all air lines and mounting points are secure. Proper torque specifications must be followed.
Compatibility: It is critical to verify that part number 38509 is the correct replacement for your specific vehicle model and year *before* purchase. Consult your vehicle's service manual or a parts specialist. This spring is designed for rear axle applications.
Care: Air suspension springs require minimal direct care but benefit from regular inspection of associated components like air lines, sensors, and compressors. Keep the area around the spring clean to prevent debris buildup. Periodically check for leaks in the air lines, which can impact the spring's performance.
