TRW Automotive AfterMarket DF4986S Brake Disc

TRW Automotive AfterMarket DF4986S Brake Disc

The TRW DF4986S brake disc is a high‑performance, aftermarket component engineered for the rear axle of Hyundai H‑1 and JAC H‑1 vehicles, including the Starex, Satellite MPV, and various commercial van configurations. Designed to replace the original equipment (OE) part, this disc delivers superior stopping power, durability, and heat dissipation in demanding driving conditions.

Key Technical Specifications

• Diameter: 303 mm (12 in)
• Thickness: 20 mm (0.79 in)
• Inner bore: 120 mm (4.72 in) – compatible with standard hub assemblies
• Ventilation: Fully ventilated design for optimal heat management
• Material: Premium cast iron alloy with a high‑temperature coating to resist wear and corrosion
• Weight: Approximately 4.5 kg (9.92 lb) per disc, balancing performance and vehicle dynamics
• Compatibility: Hyundai H‑1, JAC H‑1, Starex A1, Satellite MPV, and related commercial vans (2000‑present)

Design Features & Performance Benefits

The DF4986S incorporates a dual‑channel venting system that channels hot air away from the brake pads, reducing fade during prolonged braking. The disc’s smooth surface finish ensures even pad contact and minimizes noise. Its high‑temperature coating protects against oxidation and extends service life, especially in heavy‑load or off‑road scenarios.

Because the disc is engineered to match the exact dimensions of the OEM part, it fits seamlessly into existing brake assemblies without requiring additional modifications. This guarantees that the vehicle’s braking geometry remains unchanged, preserving handling characteristics and safety performance.

Installation & Maintenance

• Installation: Remove the old rear disc, clean the hub surface, align the new DF4986S with the mounting flange, and torque to manufacturer specifications. No special tools are required beyond standard automotive service equipment.
• Maintenance: Inspect for cracks or excessive wear after every 10,000 km (6,200 mi) of operation. Replace pads in conjunction with disc replacement if pad thickness falls below the minimum threshold to maintain optimal braking performance.

Applications & Vehicle Models

The DF4986S is specifically tailored for:

• Hyundai H‑1 (2000‑present) – both passenger and commercial variants
• JAC H‑1 / Starex A1 – including the 14.3 bus configuration
• Satellite MPV – rear disc replacement for improved safety
• Commercial vans and light trucks that utilize the same hub and brake system architecture as the H‑1 platform

Quality Assurance & Compliance

TRW Automotive adheres to stringent quality control protocols. Each DF4986S disc undergoes:

• Dimensional inspection to ensure precise fitment
• Heat‑treatment verification for consistent thermal performance
• Surface integrity testing to detect micro‑cracks or defects
• Compliance with ISO/TS 16949 automotive quality management standards

Why Choose the TRW DF4986S?

Opting for the TRW DF4986S brake disc guarantees:

• Reliable stopping power in both urban and high‑speed environments
• Enhanced durability under heavy load or frequent stop‑and‑go traffic
• Consistent performance across a wide range of temperatures
• Seamless integration with existing brake systems, eliminating the need for costly upgrades
• A proven track record in commercial and passenger vehicle applications worldwide

Conclusion

The TRW Automotive AfterMarket DF4986S Brake Disc stands out as a premium, reliable choice for drivers seeking to maintain or improve the braking performance of their Hyundai H‑1 or JAC H‑1 vehicles. Its precise engineering, robust construction, and comprehensive compatibility make it an ideal replacement for OEM discs in both everyday use and demanding commercial operations.