Centric 121.42031 Disc Brake Rotor - Front

Overview of Centric C-TEK Standard Disc Brake Rotor 121.42031

The Centric C-TEK Standard Disc Brake Rotor 121.42031 is designed specifically for Nissan Pulsar NX and Sentra models. This solid, smooth-surfaced rotor offers reliable braking performance with precise fitment and consistent thickness specifications.

• Compatible with Nissan Pulsar NX and Sentra
• Part number 121.42031 for exact replacement
• Solid disc brake rotor with smooth surface finish
• Outside diameter: 240.3 mm (9.461 inches)
• Nominal thickness: 12.0 mm (0.472 inches)
• Discard thickness: 11.0 mm (0.433 inches)
• Overall height: 45.1 mm (1.776 inches)
• Floating disc mounting design
• 4 stud/lug holes with 12.6 mm diameter
• Mounting bolt hole circle diameter: 100 mm (3.937 inches)
• Weight approximately 4.32 kg (9.5 lbs)

Product Line Details: C-TEK Standard Disc Brake Rotors

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors engineered to meet OEM specifications for fit, form, and function. This product line focuses on providing solid rotors with smooth surfaces designed for consistent braking performance and durability. The 121.42031 rotor maintains these standards, ensuring compatibility and reliable operation for Nissan Pulsar NX and Sentra vehicles.

Technical Description and Specifications

This Centric disc brake rotor features a solid design with a smooth surface type, optimized for standard braking applications. The rotor’s outside diameter measures 240.3 mm (9.461 inches), with a nominal thickness of 12.0 mm (0.472 inches) and a discard thickness of 11.0 mm (0.433 inches), indicating when replacement is necessary. The overall height is 45.1 mm (1.776 inches), and it includes a floating disc mounting system to accommodate thermal expansion and reduce stress. The rotor has four stud/lug holes, each 12.6 mm in diameter, arranged on a 100 mm (3.937 inches) bolt circle diameter. The center hole diameter is 61.0 mm (2.402 inches), and the rotor weighs approximately 4.32 kg (9.5 lbs). This rotor does not include an ABS tone ring or bearings.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Nissan Pulsar NX and Sentra
• Addresses brake pulsation and vibration issues
• Restores proper rotor thickness for safe braking performance
• Eliminates uneven brake pad wear caused by rotor surface imperfections
• Improves braking consistency and pedal feel

Installation Notes and Tips

• Ensure rotor thickness is above discard thickness before installation
• Clean rotor surface and hub mounting area to prevent runout
• Use proper torque specifications on mounting bolts
• Check compatibility with vehicle ABS system; this rotor does not include an ABS tone ring
• Inspect brake pads and replace if necessary during rotor installation

Quality Assurance and Warranty

Centric C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM standards for quality and durability. The 121.42031 rotor undergoes strict quality control to ensure dimensional accuracy and material integrity. While specific warranty details are not provided here, Centric typically offers coverage against defects in materials and workmanship. Consult product documentation or Centric directly for warranty terms.