09.A621.31, 09A62131 Product Overview The Brembo 09.A621.31 is a high-performance, perforated (cross-drilled) front brake disc from Brembo’s Prime Line. Specifically engineered for modern Mercedes-Benz executive sedans and coupes, this disc combines sports-inspired aesthetics with advanced metallurgy. It features a high-carbon cast iron composition for superior thermal stability and a specialized UV paint treatment for lasting corrosion protection. The cross-drilled design ensures a continuous “cleaning” of the brake pads and faster heat dissipation, providing consistent stopping power under heavy braking. Technical Specifications Part Type: Front Brake Disc (Rotor) Manufacturer Part Number: 09.A621.31 Manufacturer: Brembo Brake Disc Type: Internally Vented & Perforated (Cross-Drilled) Diameter (Ø): 322 mm Thickness (TH): 32 mm Minimum Thickness: 30 mm Height (A): 65 mm Centering Diameter (B): 67 mm Number of Holes: 5 (Bolt Hole Circle Ø 112 mm) Material: High-Carbon Cast Iron Surface Finish: UV Coated (Anticorrosion) Tightening Torque: 130 Nm Part Numbers & OE References MERCEDES-BENZ: 0004211112, 0004213012, 000421301207, 00044213012, 2044211012, A0004211112, A0004213012, A000421301207, A00044213012, A2044211012 MERCEDES-BENZ (BBDC): A0004211112, A0004213012 Applications & Compatibility This Brembo disc is the standard performance fitment for the Mercedes-Benz C-Class and E-Class series, particularly models equipped with larger braking systems or sport packages. Known Fitments include: Mercedes-Benz C-Class (W204 / S204 / C204): C250 CDI, C300, C320 CDI, and C350 models (2007–2014). Mercedes-Benz E-Class (W212 / S212): E200, E220 BlueTEC, E250 CDI, E300, and E350 models (2009–2016). Mercedes-Benz E-Class Coupe/Convertible (A207 / C207): E220 CDI, E250, and E350 variants. Mercedes-Benz SLK (R172): Select performance trims. Note: These discs are often part of the “AMG Line” or “Sport Package” braking systems. Always check if your original discs are 322mm, as some models use 295mm or 344mm alternatives. Key Features Cross-Drilled Design: Improves “bite” and gas evacuation, significantly reducing brake fade during spirited driving. High-Carbon Technology: Optimized to reduce vibrations and noise, providing a smoother and quieter braking experience. UV Coating: Protective coating on the hub, outer edges, and ventilation chambers ensures the disc remains rust-free and aesthetically pleasing. PVT Ventilation: Features Brembo’s Pillar Venting Technology, which improves cooling and reduces the risk of thermal cracks. Ready to Fit: Includes fixing screws in the box for a professional and secure installation. Warranty & Product Authenticity Authenticity: 100% genuine Brembo product with the Brembo “Original” security seal. Condition: New, supplied in original Brembo Prime red packaging. Standards: Fully ECE-R90 certified for European road safety compliance. Warranty: 2-year manufacturer warranty against manufacturing defects. Why Choose AAA Trading? Mercedes-Benz Specialists: Extensive stock of genuine braking components for the entire Mercedes-Benz lineup. Global Reach: Trusted wholesale partner for the Middle East, Africa, and CIS regions. Quality Assurance: We only provide genuine parts that meet or exceed OE performance. Complete Braking Solutions: One-stop shop for discs, pads, sensors, and brake fluid.
