TRW Brake LineBrake Pipe 46042804354604285335460428543546142003484614200748

TRW Brake Line (Brake Pipe) – PHA247

The TRW Brake Line, identified by the part number series 4604280435, 4604285335, 4604285435, 4614200348, 4614200748, and others, is a high‑performance hydraulic brake hose designed for modern automotive applications. This component is engineered to provide reliable, consistent braking performance under demanding conditions, ensuring safety and durability across a wide range of vehicles.

Key Features

• High‑Pressure Capacity: Rated for pressures up to 3000 psi (20.7 MPa), suitable for both passenger cars and light commercial vehicles.
• Durable Construction: Made from reinforced rubber with a multi‑layered steel braid, providing excellent resistance against abrasion, heat, and chemical exposure.
• Flexible Design: The hose’s flexible construction allows it to navigate tight engine bay spaces without compromising performance.
• Corrosion Resistance: Internal coating protects against brake fluid corrosion, extending the service life of the hose.
• Temperature Range: Operates effectively from -40°C to +120°C, accommodating extreme driving conditions.

Material Composition

The TRW Brake Line is composed of several layers that work together to deliver superior performance:

1. Inner Rubber Layer: A high‑grade nitrile rubber (NBR) that resists brake fluid degradation and maintains elasticity.
2. Steel Braiding: Multiple layers of stainless steel wire provide tensile strength, preventing kinking or bursting under pressure.
3. Outer Rubber Layer: A protective outer layer that shields the hose from environmental factors such as oil, fuel, and road grime.
4. Coating & Sealant: Specialized coatings reduce friction between layers, enhancing durability and reducing wear during flexing cycles.

Compatibility and Applications

The PHA247 brake hose is engineered to fit a broad spectrum of vehicles. Common applications include:

• MERCEDES‑BENZ: Models such as the Classe G SUV, various sedan and coupe lines.
• BMW, AUDI, VOLKSWAGEN, FORD, CHEVROLET, TOYOTA, HONDA, NISSAN, MAHINDRA, and many others.
• Light Commercial Vehicles: Vans, pickups, and small trucks that require robust braking systems.

For precise fitment, consult the vehicle’s service manual or TRW’s online part finder using the specific model year and trim level. The hose is available in multiple lengths (commonly 495 mm) to accommodate different chassis designs.

Installation Guidelines

1. Preparation: Ensure the brake system is depressurized before handling the hose. Use a brake fluid reservoir and a clean, dry work area.
2. Connection: Attach the hose to the master cylinder or caliper using the appropriate fittings. Tighten bolts securely but avoid overtightening, which can damage the hose.
3. Sealing: Apply brake fluid sealant to all threads and fittings to prevent leaks.
4. Testing: After installation, re‑pressurize the system slowly while checking for any signs of leakage or abnormal pressure drops.
5. Safety Check: Verify that the hose is free from kinks, twists, and that it has sufficient slack to accommodate suspension movement.

Maintenance Tips

• Inspect the brake hose regularly for signs of wear such as cracks, bulges, or discoloration. Replace immediately if any damage is observed.
• Avoid exposing the hose to extreme temperatures or direct sunlight for prolonged periods; store vehicles in shaded areas when possible.
• When changing brake fluid, flush the entire system and replace the hose if it has been in service for more than five years or after a significant number of miles (typically 30,000–50,000 km).
• Use only manufacturer‑approved brake fluids to maintain chemical compatibility with the hose’s rubber components.

Performance Benefits

The TRW PHA247 brake line delivers several performance advantages:

• Consistent Brake Response: The reinforced construction ensures minimal pressure loss, providing a firm and predictable braking feel.
• Extended Service Life: High‑quality materials reduce the frequency of replacements, saving maintenance costs over time.
• Enhanced Safety: Reliable sealing and robust design minimize the risk of brake fluid leaks that could compromise braking efficiency.

Technical Data Sheet Summary

Conclusion

The TRW Brake Line (PHA247) is a meticulously engineered component that combines durability, flexibility, and high‑pressure performance. Its robust construction and wide compatibility make it an ideal choice for automotive technicians and vehicle owners seeking reliable braking solutions. By adhering to proper installation and maintenance practices, users can enjoy the safety benefits and long service life that TRW’s engineering excellence delivers.