Lemforder 2278301 Suspension Control Arm

Lemforder 2278301 Suspension Control Arm

The Suspension Control Arm from Lemforder, model number 2278301, is a critical component in the front axle assembly of many Audi models, particularly those produced between 1991 and 1995. This arm serves as the primary link that connects the wheel hub to the vehicle’s chassis, allowing for controlled vertical movement while maintaining precise steering geometry.

Key Functionalities

• Load Distribution: The control arm bears the weight of the front suspension and transfers forces from the wheel assembly to the frame. Its robust construction ensures that dynamic loads during acceleration, braking, and cornering are managed efficiently.
• Steering Geometry Maintenance: By preserving the correct camber, caster, and toe angles, the arm guarantees optimal tire contact with the road surface, enhancing handling stability and reducing uneven tire wear.
• Vibration Dampening: The design incorporates strategically placed bushings that absorb road shocks, contributing to a smoother ride quality.

Material Composition

The arm is fabricated from high‑strength alloy steel, treated with a protective coating to resist corrosion and fatigue. This material choice balances durability with weight savings, which is essential for maintaining vehicle performance metrics.

Compatibility Overview

This component is engineered specifically for the Audi 80 B4 (8C2), Audi 80 Avant (8C5), and Audi Cabriolet (8G7) models. It fits both left‑hand drive (LHD) and right‑hand drive (RHD) variants, with the designation “Sx” indicating the left side for LHD vehicles.

Installation Highlights

1. Removal: Detach the existing control arm by loosening the mounting bolts and carefully disengaging the wheel hub assembly. Ensure that all safety precautions are observed to prevent injury or damage.
2. Alignment Check: Before installation, verify that the new arm’s bushings match the original specifications in terms of size and orientation.
3. Mounting: Secure the control arm to the chassis using the supplied bolts. Tighten them to the manufacturer’s torque settings to guarantee a secure fit.
4. Reassembly: Reattach the wheel hub, wheel bearings, and any associated suspension components. Perform a final inspection for proper alignment.

Maintenance Tips

• Inspect bushings annually for signs of wear or leakage.
• Check bolt torque values after every 10,000 miles to ensure continued structural integrity.
• Avoid over‑tightening, which can damage the alloy steel and compromise safety.

Performance Impact

By restoring or upgrading to a new control arm, drivers experience:

• Improved steering precision due to restored geometry.
• Reduced tire wear thanks to consistent camber angles.
• Enhanced ride comfort from better shock absorption.

Technical Specifications

Translations of Key Terms

The following table provides English equivalents for common foreign descriptors found in product listings:

Conclusion

The Lemforder 2278301 Suspension Control Arm is an essential replacement or upgrade part for Audi enthusiasts seeking to maintain or enhance the original handling characteristics of their vehicles. Its precise engineering, durable construction, and compatibility with a range of classic Audi models make it a reliable choice for both routine maintenance and performance improvement.