These ZIMMERMANN brake discs, part number 400.3687.20, are engineered to meet stringent quality standards. They provide excellent heat dissipation and durability, crucial for maintaining braking performance under various driving conditions. The precision manufacturing ensures a perfect fit and optimal contact with brake pads, contributing to a smooth and responsive braking experience. Regular replacement of brake discs is essential for vehicle safety and longevity. Choose ZIMMERMANN for dependable braking solutions. These discs are a direct replacement for your original equipment, offering a balance of performance and value.