Genuine OEM Volkswagen Left Rear Brake Caliper Housing, part number 5K0615423A. This critical component forms the main body of the brake caliper, housing the piston, seals, and other internal parts necessary for applying pressure to the brake pads and stopping the vehicle. It is designed for installation on the left side of the vehicle's rear axle. Constructed from robust cast metal for high strength and heat dissipation, this housing features a distinctive red finish and weighs approximately 2.541 kg. Choosing a genuine OEM brake caliper housing ensures precise dimensional accuracy, correct material composition, and optimal heat management for reliable and safe braking performance.