TRW Automotive AfterMarket DF4770 Brake Disc

TRW Automotive AfterMarket DF4770 Brake Disc

The TRW DF4770 is a high‑performance brake disc designed for rear applications on a wide range of commercial and light commercial vehicles. It delivers reliable stopping power, durability, and ease of installation across multiple makes and models.

Key Specifications

• Diameter: 280 mm (11 in)
• Thickness: 16 mm (0.63 in)
• Disc Type: Full, solid construction
• Hole Pattern: Optional drilled hole configuration with a central bore of 118 mm for improved heat dissipation and reduced weight.
• Material: High‑strength cast iron alloy engineered for consistent thermal performance.
• Compatibility: Designed to fit rear brake assemblies on Fiat, Peugeot, Citroën, Vauxhall, Opel, and Ducato models (including the Ducato III Van, Ducato Kastenwagen, and Ducato Bus).

Vehicle Compatibility Overview

The DF4770 is engineered to match the rear brake systems of a broad spectrum of vehicles. Below are representative models that use this disc:

• Fiat Ducato III Van / Kastenwagen (250 kg/290 kg)
• Ducato Bus (250 kg/290 kg)
• Peugeot and Citroën commercial vans
• Vauxhall and Opel equivalents
• Other light‑commercial vehicles with a rear brake diameter of 280 mm.

Design Features & Performance Benefits

• Solid Construction: Eliminates the risk of warping or uneven wear associated with drilled or slotted discs, ensuring consistent braking performance over time.
• Heat Dissipation: The optional central hole (118 mm) allows air to flow through the disc, reducing heat buildup during heavy braking and extending component life.
• Weight Reduction: Compared to traditional solid discs of similar size, the drilled variant offers a modest weight savings that can improve vehicle handling dynamics.
• Durability: Cast iron alloy resists corrosion and maintains structural integrity under high thermal loads typical in commercial driving conditions.

Installation & Maintenance Guidance

Installing the DF4770 is straightforward for technicians familiar with rear brake systems. Key steps include:

1. Remove existing disc and caliper assembly.
2. Clean mounting surface and inspect rotor backing plate for damage.
3. Align the new disc to the hub, ensuring proper fitment of the central bore if using the drilled variant.
4. Secure with manufacturer‑specified torque settings.
5. Reinstall caliper and perform a brake fluid bleed to eliminate air pockets.

Regular inspection for surface wear, scoring, or glazing is recommended. Replace the disc if it shows signs of excessive wear or damage beyond manufacturer guidelines.

Why Choose TRW DF4770?

• Proven Reliability: TRW’s long history in automotive braking technology ensures that each disc meets stringent quality standards.
• Versatility: Compatibility with multiple vehicle brands and models reduces the need for specialized parts across fleets.
• Performance Consistency: Solid construction guarantees uniform braking response, critical for safety in commercial operations.
• Ease of Service: Standard dimensions and mounting interfaces simplify maintenance procedures for service centers.

Conclusion

The TRW DF4770 Brake Disc stands out as a reliable, high‑performance component for rear braking systems on a variety of commercial vehicles. Its solid design, optional heat‑dissipating hole pattern, and broad compatibility make it an excellent choice for fleet operators seeking durability and consistent stopping power without compromising vehicle dynamics.