4008518760 Genuine Wabco Hydraulic Power Brake HCU With Module 8 Coil

A Hydraulic Power Brake HCU with Module (8-coil) 4008518760 is a key part of a modern vehicle’s braking system—specifically tied to systems like ABS (anti-lock braking), traction control, and electronic stability control. Hydraulic Power Brake HCU With Module 8 Coil

General Specifications

Fitment

Fitment can vary by engine build and options. Match the part number on the part you are replacing, or contact us with your vehicle details before ordering.

Purpose & Function

• 1. Prevents wheel lock (ABS)
• If you brake hard, the system rapidly pulses brake pressure so the wheels don’t lock up—helping you keep steering control instead of skidding.

• 2. Improves traction
• If a wheel starts slipping (like on rain, snow, or gravel), it adjusts braking to regain grip.

• 3. Stabilizes the vehicle (ESC)
• If the car starts to slide or spin, it can apply braking to specific wheels automatically to help keep you on your intended path.

4. Balances braking force
The “10-coil” setup means multiple valves are controlling pressure across different channels, allowing fine-tuned braking at each wheel, not just all-or-nothing braking.

Signs of a Bad Hydraulic Power Brake

Dashboard warning lights

• ABS light stays on
• Traction control light or stability control light
• Sometimes a general brake warning light

Loss of safety features

• ABS stops working (wheels can lock during hard braking)
• Traction control disabled
• Stability control unavailable

The car will still brake, but you’ve lost the “smart” assistance.

Unusual brake behavior

• Brake pedal may feel:
  • Harder than normal
  • Spongy or inconsistent
• Longer stopping distances in slippery conditions
• In rare cases, uneven braking between wheels

Strange noises

• Clicking, buzzing, or grinding sounds from the HCU area (usually when braking or when the system tries to activate)

Electronic issues / codes

• Diagnostic scan shows ABS or HCU-related trouble codes
• Communication errors between the module and the car’s computer

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.