TRW DF4503 Brake Disc

TRW DF4503 Brake Disc

The TRW DF4503 Brake Disc is a high‑performance, ventilated disc designed for front applications in a wide range of Chrysler, Dodge, and Plymouth models. Its engineering focuses on delivering consistent braking power, durability under extreme conditions, and ease of installation.

Key Technical Specifications

• Diameter: 257 mm (10.12 inches)
• Thickness: 20 mm (0.79 inches)
• Material: Cast iron with a reinforced core for heat dissipation
• Ventilation: Dual‑channel design to reduce brake fade and improve cooling efficiency
• Surface Finish: Polished outer surface for optimal pad contact and reduced noise
• Weight: Approximately 1.8 kg (3.97 lbs) per disc, contributing to a low unsprung mass
• Compatibility: Front brake discs for Chrysler Neon II, Dodge Neon 2.0 (1996‑1999), Plymouth PLYMOUTH, and other related models

Design Features & Performance Benefits

The DF4503 incorporates a dual‑channel ventilation system, which allows hot air to escape from the disc’s interior while drawing cooler air in through the outer channels. This design reduces thermal buildup, preventing brake fade during prolonged or aggressive driving sessions.

Its cast iron construction offers excellent wear resistance and a high coefficient of friction when paired with standard brake pads. The reinforced core further enhances structural integrity, ensuring that the disc can withstand repeated braking cycles without warping.

The polished outer surface not only improves pad contact but also reduces noise and vibration during operation. This results in a smoother ride and quieter braking experience compared to standard cast iron discs with matte finishes.

Installation & Compatibility

Installing the DF4503 is straightforward for technicians familiar with front brake systems. The disc’s standard mounting flange aligns with most factory hubs, and its rim diameter matches the original equipment specifications for the supported models.

• Chrysler Neon II: Front discs (1996‑2000)
• Dodge Neon 2.0: Front discs (1996‑1999)
• Plymouth PLYMOUTH: Front discs (various years)

Because the disc is a direct replacement for OEM units, no modifications to calipers or suspension components are required. This ensures that performance remains consistent with factory expectations.

Durability & Longevity

The DF4503’s robust construction translates into a long service life. Even under high‑temperature conditions—such as spirited driving, towing, or mountainous terrain—the disc maintains its structural integrity and friction characteristics for thousands of miles.

Regular maintenance, such as checking pad wear and ensuring proper rotor alignment, will further extend the lifespan of both the disc and associated brake components.

Applications Beyond Original Models

While the DF4503 is engineered for specific Chrysler, Dodge, and Plymouth vehicles, its size and mounting specifications make it a viable upgrade or replacement for other front‑wheel vehicles that share similar hub dimensions. Enthusiasts often use the disc in custom builds where high braking performance is desired.

Conclusion

The TRW DF4503 Brake Disc exemplifies a blend of engineering precision, thermal management, and durability. Its ventilated design ensures reliable stopping power across a range of driving conditions, while its compatibility with popular front‑wheel models makes it an attractive choice for both OEM replacements and performance upgrades.

By selecting the DF4503, vehicle owners can trust that their braking system will deliver consistent, high‑quality performance throughout the life of the disc.