Zimmermann 000-421-23-12 Formula Z Compound Brake Disc Front Left

The Zimmermann 000-421-23-12 is a Formula Z compound brake disc designed as a direct-fit replacement for Mercedes-Benz vehicles. As part of Zimmermann's FusionZ line, this is a high-performance, two-piece composite disc engineered to deliver superior stopping power and long-term durability.

Unlike conventional one-piece cast iron discs, this compound brake disc combines a cast iron friction ring with a lightweight aluminum hub, joined together via metal pins in the Formula Z design. This construction significantly reduces unsprung mass, contributing to improved handling, fuel efficiency, and reduced CO2 emissions.

Key Features:

• Compound two-piece construction — cast iron friction ring paired with a lightweight aluminum hub
• Internally vented design — 360 x 36 mm disc with optimized ventilation channels for efficient heat dissipation
• Floating mounting system — allows the friction ring to expand freely under heat, preventing deformation, warping, and thermal cracking
• Cross-drilled / perforated — aids in gas and heat evacuation for consistent braking feel
• 5 x 112 bolt hole circle — compatible with Mercedes-Benz bolt patterns
• Prepared for wear indicator — compatible with OEM wear warning sensor wiring
• Left front axle position — must be replaced in pairs
• Manufactured in Sinsheim, Germany on state-of-the-art production lines

OEM Reference Numbers: 000 421 23 12 | 000-421-23-12 | 0004212312 | 000.421.23.12

Zimmermann has been producing premium brake components for over six decades, with a catalog of more than 2,000 brake and engine components sold in over 60 countries worldwide. The Formula Z line is engineered to meet or exceed OEM specifications while reducing weight and improving thermal performance compared to standard one-piece discs.