Lesjofors 4008499 Suspension Spring

Lesjofors 4008499 Suspension Spring

The Lesjofors 4008499 Suspension Spring is a high‑performance coil spring engineered for the front suspension of premium vehicles, particularly the BMW 5 Series (F10/F11). Designed with precision metallurgy and advanced manufacturing techniques, this component delivers exceptional ride quality, handling stability, and durability.

Key Technical Specifications

• Model Number: 4008499
• Application: Front suspension of BMW 5 Series (F10/F11), including Touring, 530d, 535d variants.
• Spring Type: Helical coil spring (Schraubenfeder).
• Material Composition: High‑strength alloy steel with a proprietary heat treatment process to enhance fatigue resistance.
• Load Capacity: Designed to support the vehicle’s front axle load while maintaining optimal ride height and damping characteristics.
• Dimensions: Tailored to fit the OEM mounting points, ensuring seamless integration without modification.

Performance Characteristics

The spring’s design focuses on balancing stiffness with compliance. This balance allows for:

• Improved Road Holding: Enhanced grip during cornering and braking due to reduced body roll.
• Consistent Ride Height: Maintains factory ride height across varying load conditions, preserving aerodynamic efficiency.
• Reduced Noise, Vibration & Harshness (NVH): The precise spring rate minimizes chassis flex, leading to a quieter cabin experience.
• Long-Term Durability: Heat‑treated steel resists fatigue and corrosion, extending service life even under aggressive driving conditions.

Installation & Compatibility

Installing the Lesjofors 4008499 Suspension Spring is straightforward for technicians familiar with OEM suspension components. The spring matches all original mounting points, including:

• Front Upper Control Arm Mounts
• Lower Control Arm Attachments
• Steering Rack Interface

Because the component is a direct replacement for the factory part, no additional hardware or modifications are required. This ensures that the vehicle’s suspension geometry remains unchanged, preserving handling characteristics.

Manufacturing Excellence

Lesjofors, a renowned name in automotive suspension technology, applies rigorous quality control throughout production:

• Precision Machining: Each spring is machined to exact tolerances, guaranteeing uniformity across batches.
• Heat Treatment: A proprietary process imparts high tensile strength while maintaining flexibility.
• Surface Finishing: Anti‑corrosion coatings protect against environmental factors such as road salt and humidity.

Benefits for Vehicle Owners

• Enhanced Driving Dynamics: The spring’s optimized rate improves steering response and reduces body roll, giving drivers confidence on both straight roads and tight corners.
• Maintained Comfort: Despite its performance focus, the spring preserves a comfortable ride for daily commuting and long‑distance travel.
• Reliability: With robust construction, owners can expect fewer maintenance visits related to suspension wear.

Conclusion

The Lesjofors 4008499 Suspension Spring exemplifies the fusion of engineering precision and practical performance. Tailored for the BMW 5 Series front axle, it delivers superior handling, consistent ride height, and long‑term durability—all while fitting seamlessly into the vehicle’s existing suspension architecture.

Choosing this component means investing in a high‑quality, OEM‑compatible solution that enhances both safety and driving pleasure for years to come.