TRW Automotive AfterMarket PHC235 Brake Hose

TRW Automotive AfterMarket PHC235 Brake Hose

The TRW Automotive AfterMarket PHC235 Brake Hose is a premium component engineered to deliver reliable hydraulic pressure transmission in automotive braking systems. Designed for high‑performance vehicles and commercial fleets alike, this hose offers exceptional durability, precise fluid flow, and superior safety characteristics that meet the rigorous demands of modern brake applications.

Design & Construction

The PHC235 is built around a multi‑layered architecture that combines flexibility with structural integrity. The core consists of a reinforced polymer tube capable of withstanding high pressure and temperature variations. Surrounding this core are concentric layers of braided steel wire and elastomeric material, which provide:

• High tensile strength to resist elongation under load.
• Corrosion resistance against brake fluid chemicals and environmental exposure.
• Heat shielding that protects the inner core from thermal degradation during braking events.

The outermost layer is a protective coating that resists abrasion, UV radiation, and mechanical wear. This layered design ensures consistent performance over extended service intervals.

Materials & Quality Standards

• Core Material: High‑density polyethylene (HDPE) with a reinforced polymer blend for enhanced strength.
• Braiding: Stainless steel wire, 0.5 mm diameter, 360° coverage to provide uniform pressure distribution.
• Elastomeric Layer: Fluoroelastomer (FKM) that offers excellent chemical resistance against DOT 4/5 brake fluids.
• Coating: Polyurethane finish with UV stabilizers for long‑term durability.

All materials are sourced from suppliers who comply with ISO 9001 and automotive industry specifications, ensuring consistent quality across every batch.

Performance Characteristics

Parameter	Specification
Maximum Operating Pressure	250 bar (3600 psi)
Temperature Range	-40 °C to +120 °C (-40 °F to 248 °F)
Fluid Compatibility	DOT 4, DOT 5, DOT 5.1 brake fluids
Length Options	0.6 m – 2.4 m (various lengths available)
Thread Size	M10x1 external thread for standard fittings
Weight	Approximately 0.15 kg per meter

The hose’s high pressure tolerance and temperature resilience make it suitable for both passenger cars (e.g., Alfa Romeo models) and heavy commercial vehicles such as Iveco Daily buses.

Compatibility & Applications

• Passenger Vehicles: Alfa Romeo, Fiat, and other European brands that require a robust brake hose for front or rear braking systems.
• Commercial Fleet: Iveco Daily series (Daily II, Daily I), including bus and truck variants that demand reliable hydraulic performance under heavy loads.
• Aftermarket Replacement: Designed to fit seamlessly into existing brake assemblies without the need for additional adapters or modifications.

The PHC235’s universal M10x1 thread size ensures compatibility with a wide range of brake hose fittings and brackets used across automotive platforms.

Installation Guide

1. Preparation: Verify that the existing hose is free from cracks, kinks, or contamination. Clean the mating surfaces with an alcohol wipe to remove oil or debris.
2. Threading: Apply a thin layer of brake fluid compatible thread sealant to the external M10x1 threads on the new hose.
3. Connection: Screw the hose onto the fitting clockwise until snug. Avoid over‑tightening, which can damage the elastomeric layers.
4. Fluid Refill: After installation, purge the brake system of air by pumping the brake pedal several times or using a vacuum pump. Ensure that the fluid level is correct and that no leaks are present.
5. Testing: Perform a functional test by applying the brakes at low speed to confirm proper hydraulic response before normal operation.

Maintenance & Inspection

• Regular Checks: Inspect hoses every 12,000 km or annually for signs of wear, swelling, or discoloration.
• Leak Detection: Use a brake fluid dye or visual inspection to identify micro‑leaks that may develop over time.
• Replacement Interval: While the PHC235 is engineered for longevity, it is recommended to replace hoses after 80,000 km or if any damage is observed.

Safety Considerations

The integrity of a brake hose directly influences vehicle safety. The TRW PHC235 incorporates fail‑safe design features:

• Pressure Relief Valve Compatibility: Works with standard pressure relief valves to prevent over‑pressure scenarios.
• Temperature Thresholds: Maintains structural integrity up to +120 °C, reducing the risk of hose failure during high‑temperature braking events.
• Chemical Resistance: Withstands aggressive brake fluids without degradation, ensuring consistent hydraulic performance.

Engineering Specifications

Dimension	Value
Inner Diameter	12 mm (typical)
Outer Diameter	18 mm (including coating)
Wall Thickness	3.5 mm (core + reinforcement)
Flexibility Rating	Standard for automotive brake hoses; allows bending radius of 50 mm without stress.

Benefits Summary

• Unmatched Durability: Multi‑layer construction resists wear, corrosion, and thermal fatigue.
• Consistent Performance: Maintains hydraulic pressure across a wide temperature range.
• Ease of Installation: Standard M10x1 threads eliminate the need for custom fittings.
• Versatility: Suitable for both passenger cars and commercial vehicles, including Alfa Romeo and Iveco Daily models.
• Safety Assurance: Designed to meet or exceed OEM specifications, ensuring reliable braking under all operating conditions.

Frequently Asked Questions

What brake fluids are compatible with the PHC235?

The hose is fully compatible with DOT 4, DOT 5, and DOT 5.1 brake fluids due to its fluoroelastomer lining.

Can I use this hose in a high‑performance racing setup?

Yes; the PHC235’s pressure rating of 250 bar makes it suitable for racing applications that demand rapid, high‑pressure fluid transfer.

Is there a specific thread sealant required?

A standard brake fluid compatible thread sealant is recommended to prevent leaks at the M10x1 threads.

What is the expected service life under normal driving conditions?

Typically 80,000 km or more, provided the hose remains free from damage and is inspected regularly.

Conclusion

The TRW Automotive AfterMarket PHC235 Brake Hose exemplifies engineering excellence in hydraulic brake components. Its robust construction, material quality, and proven performance across a spectrum of vehicle types make it the preferred choice for technicians and fleet managers seeking reliability without compromise.

This product in Comparor
Category This product is cataloged in our store in these categories
International Find this product in one of our international stores	11.92 EUR 15.38 EUR
Colors Predominant colors of the product
Identifiers
Brand	TRW is a brand that produces automotive parts and safety systems. Some of their notable products include airbags, seatbelts, and braking systems. The company has a long history of producing quality products and is known for their innovation in the automotive industry.
Model	TRW PHC235
MPN	TRW PHC235
ID	8734918
Dimensions / Weight
Key Features