Centric 121.34037 Disc Brake Rotor - Rear Right

Overview of Centric C-TEK Standard Disc Brake Rotor 121.34037

The Centric C-TEK Standard Disc Brake Rotor 121.34037 is engineered for reliable braking performance on BMW M3 and Z3 models. Designed to meet OEM specifications, this vented rotor ensures consistent heat dissipation and smooth braking response.

• Compatible with BMW M3 and Z3 vehicles
• Vented disc brake rotor with curved vane design for enhanced cooling
• Nominal thickness of 0.787 inches (19.990 mm) and discard thickness of 0.724 inches (18.400 mm)
• Overall height of 2.409 inches (61.200 mm) and outside diameter of 12.283 inches (312.000 mm)
• Five lug holes with a 4.724 inch (120.000 mm) bolt circle diameter
• Center hole diameter of 2.953 inches (75.000 mm)
• Solid smooth surface type without ABS tone ring
• Weight approximately 15.48 lbs (7.04 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors manufactured to meet or exceed OEM standards, providing dependable braking performance for daily driving conditions. This product line focuses on delivering rotors with precise dimensions and quality materials, ensuring proper fitment and durability for vehicles like the BMW M3 and Z3. The 121.34037 rotor features a vented design with curved vanes to optimize heat dissipation and maintain braking efficiency under normal operating conditions.

Technical Details and Specifications

This disc brake rotor features a vented construction with curved vanes that promote airflow and reduce heat buildup during braking. The nominal thickness of 0.787 inches (19.990 mm) ensures structural integrity, while the discard thickness of 0.724 inches (18.400 mm) indicates the minimum safe thickness before replacement is necessary. The rotor’s overall height measures 2.409 inches (61.200 mm), and the outside diameter is 12.283 inches (312.000 mm), matching OEM dimensions for proper fitment. It includes five lug holes with a bolt circle diameter of 4.724 inches (120.000 mm) and a center hole diameter of 2.953 inches (75.000 mm). The smooth surface type is designed for consistent pad contact and braking performance. This rotor does not include an ABS tone ring or bearings.

Applications and Problem Solving

• Replacement for worn or warped rotors on BMW M3 and Z3 models
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves heat dissipation to reduce brake fade during extended use
• Restores proper rotor thickness for safe braking performance
• Compatible with OEM mounting specifications for straightforward installation

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it meets or exceeds the discard thickness of 0.724 inches (18.400 mm). Clean the rotor surface to remove any protective coatings or contaminants prior to mounting. Verify that the five lug holes align with the vehicle’s bolt pattern of 4.724 inches (120.000 mm). Use proper torque specifications when tightening lug nuts to avoid rotor warping. This rotor is designed for floating/dih disc mounting and does not include bearings or ABS tone rings, so reuse existing components as applicable.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet OEM quality standards, ensuring reliable performance and durability. While specific warranty details for part number 121.34037 are not provided here, Centric typically offers limited warranties covering defects in materials and workmanship. It is recommended to consult the product documentation or Centric directly for warranty terms related to this rotor.