TRW BWH400 Wheel Cylinder

TRW BWH400 Wheel Brake Cylinder

The TRW BWH400 Wheel Brake Cylinder is a high‑performance hydraulic component designed to deliver reliable stopping power for a wide range of Hyundai commercial and passenger vehicles. Engineered with precision machining and premium materials, this cylinder ensures consistent brake fluid pressure, smooth operation, and long service life.

Key Features

• Robust Construction: Made from hardened steel with a corrosion‑resistant coating to withstand harsh operating environments.
• High Flow Capacity: Optimized internal geometry provides rapid fluid transfer, reducing brake fade during heavy use.
• Seamless Integration: Standard mounting dimensions and bolt patterns match the original equipment specifications for Hyundai models such as the H‑1 Van, H100/H150/H200 Vans, STAREX Bus, LIBERO Van, and GRACE Van.
• Durable Seal Technology: Dual O‑rings and a precision‑ground piston seal maintain fluid integrity and prevent leaks over extended mileage.
• Temperature Resistance: Designed to operate effectively from –40 °C to +120 °C, ensuring performance in extreme climates.

Compatibility Overview

The BWH400 cylinder is specifically engineered for the following Hyundai platforms:

For each model, the BWH400 is available for both front and rear wheel brake assemblies, with left‑hand and right‑hand variants to match vehicle configuration.

Technical Specifications

Installation Guidelines

1. Preparation: Ensure the brake system is depressurized and all fluid reservoirs are drained to prevent contamination.
2. Removal of Old Cylinder: Carefully disconnect the hydraulic lines, noting the orientation of seals. Remove the mounting bolts and gently lift the old cylinder out of the wheel assembly.
3. Inspection: Check the mounting flange for wear or damage; replace if necessary to maintain a proper seal.
4. Installation of BWH400: Align the new cylinder with the mounting flange, ensuring that the piston rod is correctly positioned. Tighten bolts to the manufacturer’s torque specification (consult OEM service manual).
5. Re‑connect Hydraulic Lines: Attach the brake lines securely, verifying that all fittings are tight and free of leaks.
6. Bleeding Procedure: Follow the recommended bleeding sequence for Hyundai vehicles to eliminate air from the system. Use fresh brake fluid throughout the process.
7. Final Check: Inspect the cylinder for any signs of leakage, ensure that the piston moves smoothly, and confirm that the brake pedal feels firm and responsive.

Maintenance & Longevity Tips

• Regularly inspect the O‑rings for wear or cracking; replace them during routine service intervals.
• Keep the cylinder’s exterior clean to prevent debris from entering the seal area.
• Avoid using contaminated brake fluid; always use the recommended hydraulic fluid type specified by Hyundai.
• If the vehicle operates in extreme temperatures, consider periodic checks of the cylinder’s internal pressure rating.

Why Choose TRW BWH400?

The TRW BWH400 Wheel Brake Cylinder combines proven engineering with meticulous quality control. Its compatibility across a broad spectrum of Hyundai commercial and passenger vehicles makes it an ideal replacement or upgrade component for fleet operators, maintenance shops, and automotive enthusiasts alike. By selecting this cylinder, you ensure:

• Consistent Brake Performance: Reliable fluid transfer maintains stopping power even under heavy load.
• Extended Service Life: Durable materials reduce the need for frequent replacements.
• Ease of Installation: Standardized dimensions and clear mounting instructions streamline service procedures.

Conclusion

The TRW BWH400 Wheel Brake Cylinder stands out as a dependable, high‑quality component tailored for Hyundai’s diverse vehicle lineup. Its robust construction, precise engineering, and straightforward installation make it the preferred choice for maintaining optimal braking safety across commercial vans, buses, and passenger cars.