The Zimmermann Brake Kit - Front/Rear - 138687 is a comprehensive kit of products designed to service the brakes of a car. It includes six different components, each serving a specific function in maintaining and improving the performance of a vehicle's braking system. The kit is suitable for both the front and rear brakes, making it a versatile and convenient option for car owners.

The contents of the kit include brake pads, which are responsible for creating friction against the rotors to slow down or stop the vehicle. The kit also contains brake rotors, which are the discs that the brake pads clamp onto to create friction. Additionally, the kit includes brake calipers, which house the brake pads and help to control their movement.

To ensure smooth and efficient operation of the brakes, the kit also includes brake sensors. These sensors monitor the condition of the brake pads and alert the driver when they need to be replaced. The kit also contains brake fluid, which is essential for creating hydraulic pressure to engage the brakes.

Lastly, the Zimmermann Brake Kit includes brake hardware, such as clips and pins, which help to secure the brake components in place and ensure they function properly. Overall, this kit provides all the necessary components to service the brakes of a car, ensuring safety and optimal performance on the road.