Centric 121.39048 Disc Brake Rotor - Front

Reliable Disc Brake Rotor for Volvo XC90

The Centric C-TEK Standard Disc Brake Rotor 121.39048 is engineered to meet the braking demands of the Volvo XC90. Designed with precision, this vented rotor ensures consistent performance and durability under various driving conditions.

• Compatible with Volvo XC90 models
• Vented disc brake rotor design for improved heat dissipation
• Nominal thickness of 1.181 inches (30.000 mm) with discard thickness at 1.063 inches (27.000 mm)
• Overall height of 2.028 inches (51.500 mm) for proper fitment
• Outside diameter measures 12.913 inches (328.000 mm)
• Floating disc mounting style with straight vane design
• Five stud/lug holes with 0.657 inch (16.700 mm) diameter
• Center hole diameter of 2.677 inches (68.000 mm) and mounting bolt hole circle diameter of 4.252 inches (108.000 mm)
• Surface type is smooth, suitable for standard braking applications
• Weight approximately 26.45 lbs (12.00 kgs)

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric offers rotors designed to meet or exceed OEM specifications. This product line focuses on providing reliable, vented rotors that maintain consistent braking performance and heat management. The 121.39048 rotor is part of this line, delivering a balance of durability and fitment precision for the Volvo XC90.

Product Details and Specifications

This disc brake rotor features a vented design with straight vanes to enhance airflow and reduce heat buildup during braking. The smooth surface type supports even pad wear and consistent stopping power. With a floating disc mounting style, the rotor allows for slight movement to accommodate thermal expansion and reduce stress. The rotor’s dimensions, including a 12.913-inch outside diameter and 2.028-inch overall height, ensure proper fitment on Volvo XC90 vehicles. The five lug holes and mounting bolt circle diameter are engineered to match factory specifications, facilitating straightforward installation.

Common Applications and Problem Solving

• Replacement for worn or warped rotors on Volvo XC90
• Addresses brake pulsation caused by uneven rotor surfaces
• Improves heat dissipation to reduce brake fade during extended use
• Restores braking performance affected by rotor thickness below discard limits
• Suitable for routine maintenance and brake system overhauls

Installation Notes and Tips

Ensure the rotor thickness is measured before installation to confirm it is above the discard thickness of 1.063 inches (27.000 mm). Clean the rotor surface to remove any protective coatings or debris prior to mounting. Verify that the mounting bolt hole circle diameter and lug hole dimensions match the vehicle specifications. This rotor does not include bearings or an ABS tone ring, so confirm compatibility with your vehicle’s braking system. Proper torque specifications should be followed during installation to avoid rotor warping.

Quality Assurance and Warranty

Centric’s C-TEK Standard Disc Brake Rotors are manufactured to meet strict quality standards, ensuring reliable performance and durability. While specific warranty details for part number 121.39048 are not provided here, Centric typically offers coverage against defects in materials and workmanship. It is recommended to consult the product documentation or Centric directly for warranty terms related to this rotor.