TRW Automotive AfterMarket DF4356 Brake Disc

TRW Automotive AfterMarket DF4356 Brake Disc

The TRW DF4356 brake disc is a high‑performance, full‑size rear braking component engineered for the Mercedes‑Benz Vito, Viano, and Mixto series (model code W639). Designed to replace the older DF7174 part, this disc delivers reliable stopping power in both passenger and commercial vehicle applications.

Key Specifications

• Diameter: 296 mm – a standard size that matches the original equipment for the W639 platform.
• Thickness: 10 mm – providing robust structural integrity while maintaining optimal heat dissipation.
• Drilling Pattern: Ø112 mm full‑hole – compatible with the factory mounting system and ensuring precise alignment.
• Weight: Approximately 2.5 kg per disc, striking a balance between durability and weight savings for improved vehicle dynamics.

Material & Construction

The DF4356 is manufactured from a premium high‑strength steel alloy, treated with advanced heat‑treatment processes to enhance wear resistance. The disc features a smooth, full‑hole design that allows for efficient airflow and cooling during high‑speed braking scenarios.

Performance Benefits

• Consistent Braking: Maintains uniform friction across the entire surface, reducing the risk of uneven wear or brake fade.
• Heat Management: The full‑hole construction promotes rapid heat dissipation, essential for heavy‑duty vehicles that experience prolonged braking demands.
• Compatibility: Designed to fit seamlessly into the existing brake system of the W639 series without requiring additional modifications.

Installation Overview

Installing the DF4356 involves removing the old disc, cleaning the hub surface, and securing the new disc with the supplied mounting hardware. The drilling pattern matches the factory layout, ensuring a straightforward fit. After installation, it is recommended to perform a brake system check to confirm proper alignment and fluid levels.

Applications & Vehicle Compatibility

The DF4356 is specifically tailored for:

• Mercedes‑Benz Vito (W639) – both diesel and gasoline variants.
• Mercedes‑Benz Viano (W639) – passenger and cargo configurations.
• Mercedes‑Benz Mixto (W639) – commercial and mixed-use models.

Why Choose TRW?

TRW is a globally recognized leader in automotive braking solutions. Their commitment to quality, rigorous testing standards, and continuous innovation ensures that the DF4356 delivers:

• Reliability: Proven performance under diverse driving conditions.
• Safety: Enhanced stopping power contributes to overall vehicle safety.
• Longevity: Durable construction reduces the need for frequent replacements.

Maintenance Tips

To extend the life of your DF4356 brake discs, consider the following practices:

• Regularly inspect brake pads and rotors for wear.
• Keep the braking system clean to prevent contamination.
• Use manufacturer‑recommended brake fluid and perform periodic flushes.

Conclusion

The TRW DF4356 brake disc represents a blend of engineering excellence and practical design, offering vehicle owners a dependable replacement that meets or exceeds original equipment standards. Its precise fitment for the Mercedes‑Benz W639 family ensures that drivers can rely on consistent braking performance, whether navigating city streets or hauling cargo across long distances.