TRW PHA119 Brake Hose

TRW PHA119 Brake Hose

The TRW PHA119 Brake Hose is a high‑performance hydraulic hose designed for the rear brake system of a wide range of Volkswagen, Audi, Seat, Skoda and related models. It is engineered to replace the original equipment hose (OE) or to upgrade an existing brake system with a more durable and reliable component.

Key Features

• Material Composition: The hose is constructed from a reinforced rubber core surrounded by a multi‑layered steel braid. This combination provides excellent resistance to pressure, temperature fluctuations and chemical exposure from brake fluid.
• Pressure Rating: Rated for a maximum operating pressure of up to 300 bar (4350 psi), ensuring safe performance under the high demands of modern braking systems.
• Temperature Range: Operates effectively between –40 °C and +120 °C, accommodating both cold climates and high‑temperature driving conditions.
• Internal Threading: Features a standard M10x1 internal thread, compatible with the majority of rear brake caliper and master cylinder fittings found on VW, Audi, Seat, Skoda and related vehicles.
• Length Options: Available in multiple lengths (typically 185 mm, 210 mm and 240 mm) to match the specific geometry of each model.
• Flexibility: The hose’s flexible construction allows it to navigate tight routing spaces without compromising fluid flow.
• Durability: Designed to resist abrasion, UV exposure and ozone degradation, extending the service life beyond that of many aftermarket alternatives.

Vehicle Compatibility

The TRW PHA119 is specifically engineered for the following vehicle families:

• Volkswagen: Transporter IV, Passat, Golf I/II/III (1H1), and other rear‑wheel drive models.
• Audi: A3, A4, A6, and the 80 series (including the 80 B2).
• Seat: Toledo, León, and other rear‑wheel drive variants.
• Skoda: Octavia, Superb, and related models.
• Other OEMs: Vehicles built on the VW Group platform, including certain bus and van configurations.

Each model’s specific hose length is indicated by the part number suffix (e.g., 171611775, 321611775A). The internal thread size remains consistent across all variants.

Installation Guidelines

1. Preparation: Ensure the brake system is depressurized. Remove the old hose by unscrewing it from both ends, taking care not to damage the fittings.
2. Inspection: Check the master cylinder and caliper ports for corrosion or debris. Clean with a brake fluid solvent if necessary.
3. Threading: Apply a thin layer of brake fluid to the internal threads of the new hose to aid in smooth installation and to prevent leaks.
4. Connection: Screw the hose onto the master cylinder and caliper ports, tightening to the manufacturer’s torque specification (typically 12–15 Nm).
5. Bleeding: Bleed the brake system according to the vehicle’s service manual, ensuring all air is purged from the new hose.
6. Inspection: After bleeding, inspect for any signs of fluid leakage at the hose fittings.

Performance Benefits

• Consistent Hydraulic Pressure: The reinforced construction maintains pressure integrity, reducing the risk of brake fade during heavy use.
• Improved Safety: By replacing worn or cracked hoses, the risk of sudden brake failure is significantly lowered.
• Long‑Term Reliability: The hose’s resistance to chemical and environmental degradation means fewer replacements over the vehicle’s lifespan.
• Compatibility with OEM Systems: Designed to match the exact specifications of the original equipment, ensuring seamless integration without the need for additional adapters.

Maintenance Tips

While the TRW PHA119 is built for durability, regular checks can further extend its life:

• Inspect the hose for visible cracks, bulges or leaks during routine brake service.
• Replace the hose if it shows any signs of wear, even if the vehicle has not yet reached its recommended replacement interval.
• Store spare hoses in a cool, dry place to prevent premature aging of the rubber core.

Conclusion

The TRW PHA119 Brake Hose delivers a reliable, high‑quality solution for rear brake systems across a broad spectrum of Volkswagen Group vehicles. Its robust construction, precise threading, and proven performance make it an ideal choice for both OEM replacements and aftermarket upgrades. By investing in this hose, vehicle owners can enjoy enhanced braking confidence, reduced maintenance costs, and peace of mind knowing that a critical component meets the stringent standards set by TRW and the automotive industry.