Feature: 1. Replacing OE numbers for reference: LSD‑001, perfect match for the original car. 2. Perfectly fit for E30 E36 E46 M3. Fitment greatly reduces unwanted torsion steer, under‑steer. 3. Once installed, drivers will notice an immediate difference, as the limited slip differential (LSD) automatically biases the torques across the axle to the wheel with the most grip. Unwanted wheel rotation and slip are greatly reduced, resulting in less under‑steer on front wheel drive machines.On front wheel drive car the limited slip differential also delivers significant performance benefits during heavy braking. In this situation the LSD’s inherent torques transfer characteristics work in reverse to transfer torques away from the locking wheel. This enhances deceleration, delaying the intrusion of electronic ABS systems and allowing drivers to brake later and deeper with the LSD than is possible with a standard 'open'differential unit. 4. Controlled power is transmitted to all driven wheels, to maximize traction and minimize wheel rotation, particularly in slippery conditions. 5. Improves braking performance on front wheel drive car by reducing lock up and minimizing ABS intrusion due to torques transfer action. Specification: Condition: 100% Brand New Item Type: Differential Conversion Grip Kit Material: Iron OEM: LSD-001 Fitment: Fit for E30 E36 E46 M3 Size: As Shown in the Pictures. Package List: 1 x Differential Cushion Block Note: 1. Please allow slight error due to manual measurement. Thanks for your understanding.2. Monitors are not calibrated same, item color displayed in photos may be showing slightly different from the real object. Please take the real one as standard.