TRW Automotive AfterMarket PHB361 Brake Hose

TRW Automotive AfterMarket PHB361 Brake Hose

The TRW PHB361 brake hose is a high‑performance, OEM‑grade replacement for the front axle brake lines on a wide range of Alfa Romeo and Audi models. Designed with precision engineering and rigorous testing, this component delivers reliable hydraulic pressure transmission while resisting heat, vibration, and chemical exposure.

Key Features

• Exact Fitment: Manufactured to match the original specifications for Alfa Romeo 147, 156, GT, and Audi A4 front axle systems. The hose length (approximately 422 mm) and outer diameter are calibrated for seamless integration.
• Dual‑Layer Construction: Combines a reinforced inner liner with an outer protective sheath. The inner layer is made from high‑grade nitrile rubber, offering excellent resistance to brake fluid degradation and temperature extremes up to 200 °C.
• High‑Pressure Seal: Features a robust O‑ring seal system that maintains integrity under pressures exceeding 300 bar, ensuring consistent braking performance even during aggressive driving conditions.
• Corrosion‑Resistant Fittings: Stainless steel or brass fittings are used to prevent corrosion and maintain a secure connection with the brake caliper and master cylinder.
• Flexible Yet Durable: The hose’s flexible design accommodates suspension movement while maintaining structural integrity, reducing the risk of kinks or leaks over time.

Compatibility Overview

The PHB361 is engineered for the following models and variants:

Each hose is supplied as a single unit; for complete front axle replacement, two hoses are required—one for the left side and one for the right side.

Installation Guidelines

1. Preparation: Drain the brake system to prevent air lock. Remove the old hose by loosening the fittings on both the caliper and master cylinder.
2. Fitment: Align the new PHB361 with the existing mounting points. Ensure that the O‑ring faces are correctly oriented to avoid leaks.
3. Tightening: Use a torque wrench to tighten fittings to the manufacturer’s specified torque (typically 12–15 Nm). Over‑tightening can damage the hose, while under‑tightening may cause fluid loss.
4. Bleeding: After installation, bleed the brake system according to the vehicle’s service manual. This removes trapped air and restores optimal braking pressure.

Performance Benefits

• Consistent Hydraulic Pressure: The reinforced construction ensures that pressure is transmitted without fluctuation, providing a firm brake pedal feel.
• Heat Resistance: Maintains structural integrity even when the brakes reach high temperatures during prolonged use or spirited driving.
• Longevity: Designed to withstand years of service with minimal maintenance, reducing the likelihood of hose failure and associated safety risks.
• Improved Safety: By replacing worn hoses, drivers eliminate potential brake fluid leaks that could compromise braking performance or lead to catastrophic failures.

Material Composition

The PHB361’s composite structure includes:

• Inner Liner: Nitrile rubber (NBR) with a silicone additive for enhanced temperature tolerance.
• Outer Sheath: Polyurethane‑coated fabric reinforcement that resists abrasion and chemical attack.
• Fittings: Stainless steel or brass, depending on the specific model, to provide corrosion resistance and secure attachment points.

Maintenance Tips

• Inspect hoses periodically for signs of cracking, bulging, or discoloration. Replace immediately if any damage is observed.
• Avoid exposing the hose to extreme temperatures (e.g., prolonged idling in hot climates) that could accelerate material degradation.
• Use only manufacturer‑approved brake fluid to prevent chemical incompatibility and ensure optimal performance.

Why Choose TRW PHB361?

The TRW Automotive AfterMarket PHB361 Brake Hose combines OEM precision with aftermarket reliability. Its meticulous design, proven material selection, and comprehensive compatibility make it the preferred choice for technicians and enthusiasts seeking to maintain or restore the braking integrity of Alfa Romeo and Audi vehicles.