Genuine TRW Solid Brake Discs - Part Number DF4050

TRW Genuine Solid Brake Discs – Part Number DF4050

The TRW DF4050 solid brake disc is a high‑performance braking component designed for rear applications in a wide range of compact and mid‑size vehicles, including models from Opel, Chevrolet, Vauxhall, Astra, Meriva, Zafira, and GTC. Manufactured by TRW Automotive, this disc delivers reliable stopping power, durability, and consistent performance under demanding driving conditions.

Key Technical Specifications

• Diameter: 240 mm (Ø240 mm)
• Thickness: 9.9 mm
• Inner bore: 100 mm (Ø100 mm)
• Weight: Approximately 1.2 kg per disc
• Material: High‑strength cast iron with a reinforced steel backing plate for enhanced heat dissipation.
• Heat Capacity: Designed to withstand temperatures up to 650 °C, ensuring consistent braking performance during prolonged use.
• Surface Finish: Smooth, factory‑finished surface that promotes optimal brake pad contact and reduces noise.

Design Features & Engineering Highlights

The DF4050 incorporates several engineering refinements that set it apart from standard aftermarket discs:

• Full Disc Construction: Unlike split or vented designs, the solid construction provides uniform heat distribution and eliminates potential flex under high loads.
• Reinforced Steel Backing Plate: Adds structural integrity, reducing warping and extending service life.
• Optimized Rim Geometry: The rim is engineered to maximize pad contact area while maintaining a low rotational mass for improved acceleration response.
• Corrosion‑Resistant Coating: A proprietary coating protects against rust and corrosion, ensuring longevity even in harsh climates.

Vehicle Compatibility

The DF4050 is engineered to fit a broad spectrum of rear wheel assemblies. Commonly supported models include:

• Opel Astra (H and GTC variants)
• Opel Meriva A (X03)
• Vauxhall Astra H (Schrägheck, Caravan, GTC)
• Chevrolet Zafira
• Astra H (Mk5) and related derivatives

For exact fitment, consult the vehicle’s service manual or a TRW-certified technician.

Installation & Maintenance Guidelines

1. Removal: Use a torque wrench to loosen and remove the rear wheel bolts. Carefully lift the wheel assembly and detach the brake caliper, ensuring no damage to the rotor surface.
2. Inspection: Check for any signs of wear or scoring on the disc’s surface. Replace if irregularities exceed manufacturer tolerances.
3. Installation: Position the new DF4050 onto the hub, aligning it with the caliper mounting points. Reinstall the caliper and secure all bolts to the specified torque values.
4. Break‑In Procedure: After installation, perform a controlled break‑in by applying moderate braking forces at low speeds for several minutes to allow the pads to conform to the disc surface.
5. Regular Checks: Inspect brake fluid levels and pad wear regularly. Replace pads when they reach the minimum thickness threshold recommended by TRW.

Performance Benefits

• Consistent Stopping Power: The solid construction ensures uniform braking force across the entire disc surface, reducing the risk of uneven wear.
• Heat Management: Enhanced heat capacity prevents brake fade during extended driving or heavy traffic conditions.
• Reduced Noise & Vibration: Smooth surface finish and reinforced backing reduce squeal and vibration commonly associated with aftermarket discs.
• Longevity: High‑quality materials and protective coatings extend the service life, offering reliable performance over thousands of miles.

Why Choose TRW DF4050?

TRW is a globally recognized leader in automotive braking technology. The DF4050 solid brake disc reflects decades of research, rigorous testing, and commitment to safety:

• Proven Reliability: Used extensively across multiple vehicle lines, the disc has earned a reputation for dependable performance.
• Compliance with Safety Standards: Meets or exceeds all relevant automotive safety regulations, ensuring peace of mind for drivers.
• Ease of Integration: Designed to fit standard mounting interfaces, making it straightforward for technicians and DIY enthusiasts alike.

Conclusion

The TRW Genuine Solid Brake Disc – Part Number DF4050 is a premium choice for anyone seeking durable, high‑performance braking solutions for rear wheels. Its robust construction, precise engineering, and compatibility with a wide range of vehicles make it an ideal component for both everyday driving and more demanding conditions.

By selecting the DF4050, you invest in safety, reliability, and long‑term performance—key attributes that define TRW’s legacy in automotive braking technology.