Brembo 08.5178.3X Disc Brake Rotor - Rear

Brembo UV Coated Rear Rotor for Mercedes-Benz

The Brembo Premium Xtra Cross Drilled UV Coated Rotor is a direct replacement rear disc brake rotor built to meet or exceed OEM specifications. It is engineered for drivers who need consistent braking performance, corrosion protection, and a clean fit on select Mercedes-Benz and Chrysler applications, including Mercedes-Benz C230, C240, SLK230, SLK280, SLK300, SLK320, and Chrysler Crossfire rear brake setups.

Part number 08.5178.3X is part of Brembo’s Premium Xtra Cross Drilled UV Coated Rotor line, which combines a drilled braking surface with a solvent-free UV coating for added protection on the disc and braking plate surfaces. The design also uses grey cast iron construction and includes intelligent wear marking for part identification and minimum thickness reference.

• Direct replacement rear disc brake rotor
• Drilled braking surface for performance-oriented braking response
• UV coated finish for corrosion resistance on exposed surfaces
• Grey cast iron construction for stable braking characteristics
• Minimum thickness and part number markings on the rotor
• Fixing screw kit included with the rotor
• Compatible with select Mercedes-Benz and Chrysler rear brake applications

Product Details and Fitment

This rotor measures 9 mm nominal thickness with a 7.6 mm minimum thickness, 55.4 mm height, 67 mm centering diameter, and 5 mounting holes. It is a solid-type rotor with a drilled braking surface and a torque specification of 110 Nm. Brembo recommends replacing rotors and pads together to restore braking performance, and pairing this rotor with Brembo NAO/Ceramic or Low Met brake pad formulations.

Fits 2009-2011 Mercedes-Benz SLK300, rear; 2006-2008 Mercedes-Benz SLK280, rear; 2006-2007 Mercedes-Benz C230, rear; 2002 Mercedes-Benz C230, rear; 1999-2000 Mercedes-Benz C230, rear; 2003-2005 Mercedes-Benz C230, rear without Sport Package; 2001-2005 Mercedes-Benz C240, rear; 1998-2004 Mercedes-Benz SLK230, rear; 2001-2004 Mercedes-Benz SLK320, rear; 1996-2000 Mercedes-Benz C280, rear; 1999 Mercedes-Benz E300, rear; 1996-1997 Mercedes-Benz E300, rear; 1994-1995 Mercedes-Benz E320, rear; 1990-1993 Mercedes-Benz 300CE, rear; 1993 Mercedes-Benz 300E, rear; 1990-1993 Mercedes-Benz 300TE, rear; 1988-1989 Mercedes-Benz 300TE, rear; 1987 Mercedes-Benz 300TD, rear.

Common Brake Issues This Rotor Addresses

• Brake pulsation caused by worn or uneven rear rotors
• Reduced braking consistency from heat-affected rotor surfaces
• Surface corrosion on exposed brake components
• Noise and vibration from aging rear brake hardware
• Rotor wear that has reached minimum thickness

Installation Notes

Verify rear axle fitment by year, model, and package configuration before installation. Clean the hub mounting surface, confirm rotor thickness and centering dimensions, and follow the specified 110 Nm torque during assembly. For best results on Mercedes-Benz C230, SLK230, and Chrysler Crossfire rear brake service, replace pads at the same time and inspect related hardware for wear.

Quality Assurance

Brembo develops this rotor as an OEM-style replacement with UV-coated surface protection and application-specific engineering for select Mercedes-Benz and Chrysler rear brake systems. Part number 08.5178.3X is marked for identification and minimum thickness reference to support service accuracy.