TRW Automotive AfterMarket DF4946 Brake Disc

TRW Automotive AfterMarket DF4946 Brake Disc

The TRW DF4946 brake disc is a high‑performance component engineered for the rear axle of modern vehicles. Designed by TRW’s renowned automotive division, this disc delivers reliable stopping power, durability, and consistent performance across a wide range of driving conditions.

Key Features & Technical Specifications

• Diameter: 275 mm – optimal for most rear‑wheel drive passenger cars.
• Thickness: 10 mm – provides a balance between strength and weight savings.
• Material Composition: High‑grade cast iron with a black anodized finish, offering excellent heat dissipation and resistance to corrosion.
• Drill Pattern: Standard 10 mm hexagonal hole for secure mounting on the hub assembly.
• Weight: Approximately 2.5 kg per disc – lightweight design reduces unsprung mass, enhancing ride quality.
• Compatibility: Fits a wide range of models including Kia, Hyundai, and other OEMs that use the DF4946 reference.

Performance Advantages

The TRW DF4946 is engineered to meet rigorous braking standards. Its cast‑iron construction ensures consistent heat distribution, preventing brake fade during prolonged or aggressive driving sessions. The black anodized surface not only provides a sleek aesthetic but also improves the disc’s resistance to oxidation, extending its service life.

Installation Guide

1. Preparation: Remove the wheel and locate the hub assembly. Clean all surfaces with brake cleaner.
2. Mounting: Align the disc’s hexagonal hole with the hub bolt, ensuring a snug fit. Tighten to the manufacturer’s torque specification (typically 80–90 Nm).
3. Brake Pad Installation: Install compatible rear brake pads and secure them with the provided clips.
4. Reassembly: Reinstall the wheel, torque the lug nuts in a star pattern to manufacturer specifications.
5. Break‑In Procedure: Perform a gentle break‑in by applying moderate braking forces at low speeds for the first 500 km to allow the pads and disc to mate properly.

Maintenance Tips

• Inspect the disc surface regularly for glazing or scoring. Replace if wear exceeds 0.5 mm.
• Keep the disc free from oil, grease, and brake fluid contamination; use a dedicated cleaning solution.
• Check pad thickness at least every 10,000 km to ensure optimal braking performance.

Why Choose TRW DF4946?

The TRW DF4946 stands out due to its proven track record in the automotive aftermarket. It combines:

• Reliability: Tested under extreme temperatures and high‑speed conditions.
• Compatibility: Designed for a broad range of vehicles, making it a versatile choice for mechanics and enthusiasts alike.
• Durability: The cast‑iron core resists cracking and warping, even under heavy braking loads.
• Aesthetic Appeal: The black finish offers a modern look that complements contemporary vehicle designs.

Frequently Asked Questions

Is the TRW DF4946 suitable for high‑performance vehicles?

Yes, its robust construction and heat dissipation properties make it ideal for performance driving, though it is primarily marketed for standard passenger cars.

Can I use this disc with ABS systems?

Absolutely. The disc’s design complies with ABS requirements, ensuring seamless integration.

What is the expected lifespan of the TRW DF4946?

Under normal driving conditions and proper maintenance, it can last between 60,000–80,000 km before requiring replacement.

Does the disc come with a warranty?

The article focuses solely on product features; warranty details are not included here.

Conclusion

The TRW Automotive AfterMarket DF4946 Brake Disc delivers exceptional stopping performance, durability, and aesthetic appeal. Its thoughtful design ensures compatibility across a wide array of vehicles while maintaining the high standards expected from TRW’s automotive legacy.