6300-4519009222 | Genuine Wabco® ABS Hydraulic Repair Kit

An ABS Hydraulic Repair Kit 6300-4519009222 is a set of components used to repair or rebuild the hydraulic portion of an Anti-lock Braking System (ABS) module in a vehicle. It allows mechanics to restore proper function without replacing the entire ABS unit.

General Specifications

 - CE 200/300 Conventional Integrated School Bus
- 4300 (Medium Truck)
- 4100 (Medium Truck)
- CACB (Cutaway Commercial Bus)
- 3300 4X2 Bus Chassis
- 4200 (Medium Truck)
- 4400 (Medium Truck)
- 3200 (Commercial Bus Chassis)
- 1300 FBC Truck Chassis

Purpose & Function

1. Repair internal components

• Replaces worn or damaged seals, valves, gaskets, and O-rings inside the ABS hydraulic unit.

2. Restore ABS functionality

• Ensures the ABS can modulate brake pressure during hard braking or slippery conditions.

3. Maintain vehicle safety

• Prevents wheel lock-up and skidding, helping the driver maintain control.

4. Save cost

• Allows repair of the ABS unit rather than replacing the whole module, which can be expensive.

5. Improve braking performance

• Restores smooth and reliable braking, especially in emergency stops.

Signs of Bad ABS Hydraulic Repair

1. ABS warning light on the dashboard

• The ABS light stays on, indicating a problem with the ABS module or hydraulic components.

2. Brake pedal issues

• Pedal feels spongy, unusually hard, or sinks when pressed.

• Pulsating or inconsistent pedal pressure during braking.

3. Reduced ABS function

• ABS doesn’t engage when braking on slippery surfaces.

• Wheels may lock up during hard braking.

4. Unusual noises when braking

• Hissing, grinding, or clicking sounds can indicate faulty valves or internal seals.

5. Fluid leaks

• Brake fluid leaking from the ABS unit or nearby lines may indicate worn seals inside the hydraulic unit.

6. Vehicle instability during braking

• The car may skid, pull to one side, or feel unstable when stopping quickly.

7. Multiple warning lights

• ABS light may be accompanied by traction control (TCS) or stability control (ESC) warnings, since these systems rely on the ABS module.

About Wabco

WABCO (originally the Westinghouse Air Brake Company) is a global leader in vehicle control systems for commercial vehicles such as trucks, buses, and trailers. Founded in 1869 and later becoming a part of ZF Friedrichshafen AG in 2020, WABCO is best known for pioneering advanced braking, stability, and suspension technologies.