Centric 121.34047 Disc Brake Rotor - Rear

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34047

The Centric C-TEK Standard Disc Brake Rotor 121.34047 is engineered for reliable braking performance on BMW Z3 models. Designed as a solid rotor with a smooth surface, it offers consistent stopping power and durability for everyday driving conditions.

• Compatible with BMW Z3 vehicles
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 10.709 inches (272.000 mm)
• Nominal thickness: 0.394 inches (10.000 mm)
• Discard thickness: 0.331 inches (8.400 mm)
• Overall height: 3.276 inches (83.200 mm)
• 5 stud/lug holes with 0.575 inch (14.600 mm) diameter
• Center hole diameter: 2.953 inches (75.000 mm)
• Mounting bolt hole circle diameter: 120.000 mm (4.724 inches)
• Weight approximately 10.87 lbs (4.94 kgs)
• ABS tone ring not included

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers a balance of quality and value for standard braking applications. These rotors are designed to meet or exceed OEM specifications, providing dependable performance for vehicles like the BMW Z3. The line focuses on solid rotors with smooth surfaces, suitable for drivers seeking consistent braking without the need for vented or drilled designs.

Detailed Product Description

This Centric disc brake rotor features a solid construction with a smooth surface type, ensuring even pad contact and reduced noise during braking. The rotor’s nominal thickness of 0.394 inches (10.000 mm) and discard thickness of 0.331 inches (8.400 mm) define its service life and replacement threshold. With an outside diameter of 10.709 inches (272.000 mm) and an overall height of 3.276 inches (83.200 mm), it fits precisely on BMW Z3 models requiring this specification. The rotor includes five stud/lug holes with a diameter of 0.575 inches (14.600 mm) and a mounting bolt hole circle diameter of 120.000 mm (4.724 inches), ensuring secure installation. Note that this rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on BMW Z3
• Addresses brake pulsation and vibration issues
• Restores proper rotor thickness for safe braking
• Eliminates noise caused by uneven rotor surfaces
• Improves braking consistency and pedal feel

Installation Notes and Tips

Ensure the rotor surface is clean and free of rust before installation. Verify the rotor thickness with a micrometer to confirm it meets the nominal thickness and is above discard thickness limits. Use proper torque specifications for mounting bolts to avoid rotor warping. Since this rotor does not include bearings or an ABS tone ring, reuse existing components or replace separately if needed. It is recommended to replace brake pads simultaneously for optimal performance.

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet OEM standards for fit, form, and function. While specific warranty details for part number 121.34047 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. Always consult product documentation or Centric directly for warranty terms related to this rotor.