TRW Automotive AfterMarket PHD991 Brake Hose

TRW Automotive AfterMarket PHD991 Brake Hose

The TRW PHD991 is a high‑performance brake hose engineered for modern automotive braking systems. Designed with precision and durability in mind, it delivers reliable hydraulic pressure transfer while resisting heat, vibration, and chemical exposure.

Key Features & Technical Specifications

• Material Composition: Reinforced rubber core surrounded by a multi‑layer steel braid for structural integrity. The inner lining is made of high‑grade silicone to withstand temperatures up to 200 °C.
• Diameter & Length Options: Available in standard sizes ranging from 4 mm to 8 mm internal diameter, with lengths tailored to fit front and rear axle configurations on a wide range of vehicles.
• Threading: Equipped with an M10x1 internal thread profile, ensuring secure attachment to brake lines and calipers. The threading is engineered for smooth mating and resistance to loosening under vibration.
• Pressure Rating: Rated for continuous operation at pressures up to 300 bar (4,350 psi), providing confidence in high‑performance braking demands.
• Temperature Resistance: Maintains structural integrity and hydraulic performance from –40 °C to +200 °C, accommodating extreme driving conditions.
• Chemical & Oil Resistance: Resistant to brake fluid degradation, oil contamination, and common automotive chemicals, extending service life.

Design Philosophy

The TRW PHD991 embodies a blend of engineering excellence and practical application. Its reinforced construction mitigates the risk of burst or leakage under high pressure, while the flexible design allows for smooth routing around suspension components. The multi‑layer steel braid not only provides strength but also protects against abrasion from moving parts.

Installation & Compatibility

Engineers and technicians appreciate the PHD991’s straightforward installation process. Its standardized M10x1 threading aligns with most OEM brake line fittings, enabling quick swaps or upgrades. The hose is compatible with a broad spectrum of vehicles, including:

• Chevrolet models such as the Lacetti and Nubira Kombi.
• Buick series, especially those equipped with SGM components.
• DaeWoo vehicles that require robust rear axle braking solutions.
• Other manufacturers that utilize standard brake line interfaces and demand high‑temperature resilience.

Performance Benefits

• Consistent Hydraulic Flow: The smooth inner surface reduces turbulence, ensuring reliable brake response even under rapid pressure changes.
• Extended Service Life: High‑grade materials and protective braiding reduce wear, allowing the hose to maintain performance over thousands of miles.
• Safety Assurance: By preventing leaks or ruptures, the PHD991 contributes directly to vehicle safety during braking operations.

Maintenance & Inspection Guidelines

Regular inspection is recommended to detect early signs of wear. Key indicators include:

• Visible Cracks or Bulges: Any deformation may compromise pressure integrity.
• Excessive Wear on Braiding: Loss of braid strands can reduce structural support.
• Fluid Leakage: Even minor leaks indicate potential failure points that should be addressed promptly.

When signs of degradation appear, replace the hose with a new TRW PHD991 to maintain optimal braking performance.

Why Choose TRW PHD991?

• Reliability: Built to meet stringent automotive standards, ensuring dependable operation in demanding environments.
• Versatility: Fits a wide array of vehicle models and configurations, making it a go‑to choice for both OEM and aftermarket applications.
• Durability: Combines advanced materials with robust construction to resist heat, vibration, and chemical exposure.

Conclusion

The TRW Automotive AfterMarket PHD991 Brake Hose stands out as a premium solution for anyone seeking uncompromised braking performance. Its thoughtful design, rigorous material selection, and proven compatibility make it an essential component in modern automotive brake systems.