If your Jetta or Golf was produced in the last decade or so, chances are you've got a Volkswagen brake caliper at each wheel to haul you down to a stop. Acting as the 'clamp' for your brake system, the Volkswagen brake caliper serves to squeeze the brake rotor when you step on the pedal. Rather than using electricity or gasoline like most everything else on your vehicle, the Volkswagen brake caliper utilizes hydraulic pressure. That means there's a fluid under pressure-the brake fluid in this case-that presses on a piston inside the Volkswagen brake caliper housing. The Volkswagen brake caliper, in turn, presses on the brake pads stopping the vehicle. If you know anything about hydraulics, you know that an airtight fluid path is essential to proper operation. With that knowledge in hand, it should come as no surprise that fluid leakage (and air entry) is the downfall of most Volkswagen brake caliper units. As time passes, the heat of braking coupled with contaminated fluid eats away at your Volkswagen brake caliper seals. The result is fluid leakage and improper braking action. If the fluid leaks from the Volkswagen brake caliper onto the friction surfaces, grabbing, chattering, or pulling brakes can all result. If you notice strange braking action, check your Volkswagen brake caliper for leakage. If you find it, replace it with one of our remanufactured or new Volkswagen brake caliper assemblies. You'll get as-new braking action at a great discount price, so skip the rebuild kit. Get a Volkswagen brake caliper professionally remanufactured and ready to install.