Lemforder 1308501 Suspension Control Arm

Overview of the Lemforder 1308501 Suspension Control Arm

The Lemforder 1308501 is a high‑performance suspension control arm engineered for the BMW 5 Series (E39), BMW Z8, and Alpina variants. Designed to replace original OEM parts, it delivers superior strength, durability, and precise geometry, ensuring optimal handling and ride comfort.

Key Features

• Material: Heavy‑section steel alloy with a high‑strength coating that resists corrosion and fatigue.
• Design: Forged and machined to exact tolerances, featuring a smooth surface finish for reduced wear on bushings.
• Compatibility: Fits the BMW 5 Series (E39), Z8 Roadster (E52), and Alpina models such as the B10, D10, and Z8. Available in both right‑hand and left‑hand versions.
• Installation: Designed for a direct swap with OEM control arms; all mounting points match the original layout.
• Performance: Maintains exact steering geometry, preserving wheel alignment and reducing tire wear. The robust construction improves suspension stiffness, enhancing cornering stability.

Technical Specifications

Installation Guide

1. Preparation: Raise the vehicle using a jack and secure it on jack stands. Remove the wheel and disconnect the brake caliper.
2. Remove Old Arm: Loosen the mounting bolts, then detach the control arm from the steering knuckle and subframe.
3. Install New Arm: Position the Lemforder 1308501 in place. Tighten the mounting bolts to the manufacturer’s torque specifications (typically 120–140 Nm).
4. Bushing Replacement: Replace any worn bushings with OEM or high‑performance equivalents.
5. Alignment Check: After installation, perform a wheel alignment to ensure proper camber, caster, and toe settings.

Benefits Over OEM Parts

• Enhanced Strength: The alloy construction resists bending under high lateral loads, reducing the risk of failure during aggressive driving.
• Improved Durability: Coated surfaces resist rust and wear, extending service life even in harsh climates.
• Consistent Geometry: Precise machining preserves steering angles, maintaining handling characteristics identical to the original design.
• Easy Replacement: Direct fit eliminates the need for custom fabrication or additional components.

Applications and Compatibility

The Lemforder 1308501 is specifically tailored for:

• BMW 5 Series (E39) – Limousine, Touring, and Z8 Roadster
• Alpina B10, D10, and Z8 models
• Other BMW platforms with identical subframe geometry (subject to verification)

Maintenance Tips

• Inspect Bushings: Check for wear or cracking every 20,000–30,000 km.
• Torque Checks: Re‑torque mounting bolts after the first 5,000 km to counter any loosening due to vibration.
• Clean Regularly: Remove road salt and debris from the arm’s surface to prevent corrosion.

Conclusion

The Lemforder 1308501 Suspension Control Arm offers a reliable, high‑quality replacement for critical suspension components in BMW and Alpina vehicles. Its robust construction, precise engineering, and straightforward installation make it an excellent choice for enthusiasts seeking to maintain or improve vehicle performance without compromising safety.