Homeโ€บ Brake > Drums and Rotorsโ€บ Centric 121.66043 Disc Brake Rotor - Rear
Part #: 121.66043

Centric 121.66043 Disc Brake Rotor - Rear

C-TEK Standard Disc Brake Rotors, Rear
135 vehicles fit this part
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C-TEK Standard Disc Brake Rotors, Rear
Fitment: Chevrolet, GMC, and Hummer, Express 2500, Express 3500, Savana 3500, Savana 2500, H2, Silverado 1500 HD Classic, Suburban 2500, Sierra 1500 HD Classic, Yukon XL 2500, Avalanche 2500, Silverado 1500 HD, Sierra 1500 HD, Silverado 1500, Silverado 2500, Sierra 1500, and Sierra 2500
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Reliable Disc Brake Rotor for Chevrolet, GMC, and Hummer

The Centric C-TEK Standard Disc Brake Rotor 121.66043 is engineered to provide consistent braking performance for heavy-duty vehicles. Designed specifically for select Chevrolet, GMC, and Hummer models, this vented rotor ensures effective heat dissipation and durability under demanding conditions.

  • Vented disc brake rotor with straight vane design for improved cooling
  • Nominal thickness of 1.142 inches (29.000 mm) and discard thickness of 1.043 inches (26.500 mm)
  • Outside diameter measures 12.992 inches (330.000 mm) for precise fitment
  • Overall height of 3.374 inches (85.700 mm) with 8 lug holes sized at 0.650 inches (16.500 mm)
  • Center hole diameter of 4.630 inches (117.600 mm) for accurate mounting
  • Solid smooth surface type without ABS tone ring included
  • Weight approximately 24 lbs (10.910 kgs) for balanced performance

About the C-TEK Standard Disc Brake Rotors Line

The C-TEK Standard Disc Brake Rotors line by Centric is designed to meet OEM specifications for a wide range of vehicles. This product line focuses on delivering reliable braking components with precise dimensions and quality materials. The 121.66043 rotor exemplifies this approach by offering a vented design that enhances heat dissipation and maintains structural integrity, making it suitable for heavy-duty Chevrolet, GMC, and Hummer trucks and SUVs.

Technical Details and Compatibility

This disc brake rotor is compatible with Chevrolet Avalanche 2500, Express 2500 and 3500, GMC Sierra 1500, 1500 HD, 1500 HD Classic, 2500, Savana 2500 and 3500, Hummer H2, Suburban 2500, Silverado 1500, 1500 HD, 1500 HD Classic, 2500, and Yukon XL 2500 models. The rotor features a floating disc mounting style and a smooth surface finish, optimized for use without an ABS tone ring. The vented rotor design with straight vanes helps maintain optimal braking performance by reducing heat buildup during operation.

Common Issues Addressed by This Rotor

  • Brake pulsation caused by warped or uneven rotors
  • Reduced braking efficiency due to worn or thin rotors
  • Excessive heat buildup leading to brake fade
  • Noise and vibration from damaged or uneven rotor surfaces
  • Compatibility issues with OEM brake components on specified models

Installation Notes and Tips

  • Ensure rotor thickness is above discard thickness (1.043 inches) before installation
  • Clean rotor surface and hub mounting area to prevent uneven contact
  • Use proper torque specifications for the 8 lug bolts (0.650 inch diameter)
  • Check for proper alignment with caliper and brake pads
  • Inspect related brake components such as pads and calipers during installation

Quality Assurance and Warranty

Centric's C-TEK Standard Disc Brake Rotors are manufactured to meet or exceed OEM standards, ensuring reliable performance and durability. While specific warranty details for part number 121.66043 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 exact warranty terms.

BrandCentric
Part Number121.66043
PositionC-TEK Standard Disc Brake Rotors, Rear
ABS Tone Ring IncludedNo
Bearings IncludedNo
Center Hole Diameter4.630
Center Hole Diameter117.600
Disc Mounting [cntrc]Floating / DIH
Discard Thickness1.043
Discard Thickness26.500
Misc Holes [cntrc]0
Mounting Bolt Hole Circle Diameter6.500
Mounting Bolt Hole Circle Diameter165.100
Nominal Drum Diameter8.110
Nominal Drum Diameter206.000
Nominal Thickness1.142
Nominal Thickness29.000
Outside Diameter12.992
Outside Diameter330.000
Overall Height3.374
Overall Height85.700
Solid Or Vented Type RotorVented
Stud/Lug Hole Diameter0.650
Stud/Lug Hole Diameter16.500
Stud/Lug Hole Quantity8
Surface TypeSmooth
Vane Style [cntrc]Straight
Weight [cntrc] kgs10.910
Weight [cntrc] lbs24.000

This part fits 135 vehicles. Search below:

YearMakeModelBody TypeDrive TypeTransmissionLitersCylindersFuel TypePositionNotes
2022ChevroletExpress 2500RearC-TEK Standard Disc Brake Rotors
2022ChevroletExpress 3500RearSRW; JH6; C-TEK Standard Disc Brake Rotors
2022GMCSavana 3500RearSRW; JH6; C-TEK Standard Disc Brake Rotors
2021ChevroletExpress 2500RearC-TEK Standard Disc Brake Rotors
2021ChevroletExpress 3500RearSingle Rear Wheel; C-TEK Standard Disc Brake Rotors
2021GMCSavana 2500RearC-TEK Standard Disc Brake Rotors
2021GMCSavana 3500RearSingle Rear Wheel; C-TEK Standard Disc Brake Rotors
2020ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2020ChevroletExpress 3500RearFitment: Designed for vehicles with Single Rear Wheel setups; C-TEK Standard Disc Brake Rotors
2020GMCSavana 2500RearC-TEK Standard Disc Brake Rotors
2019ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2019ChevroletExpress 3500RearFitment: Designed for vehicles with Single Rear Wheel setups; C-TEK Standard Disc Brake Rotors
2019GMCSavana 2500RearC-TEK Standard Disc Brake Rotors
2019GMCSavana 3500RearFitment: Designed for vehicles with Single Rear Wheel setups; C-TEK Standard Disc Brake Rotors
2018ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2018ChevroletExpress 3500RearFitment: Designed for vehicles with Single Rear Wheel setups; C-TEK Standard Disc Brake Rotors
2018GMCSavana 2500RearC-TEK Standard Disc Brake Rotors
2018GMCSavana 3500RearFitment: Designed for vehicles with Single Rear Wheel setups; C-TEK Standard Disc Brake Rotors
2017ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2017ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2017GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2017GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2016ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2016ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2016GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2016GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2015ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2015ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2015GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2015GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2014ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2014ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2014GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2014GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2013ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2013ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2013GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2013GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2012ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2012ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2012GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2012GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2011ChevroletExpress 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2011ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2011GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2011GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2010ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2010GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2010GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2009ChevroletExpress 2500GASRearC-TEK Standard Disc Brake Rotors
2009ChevroletExpress 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2009GMCSavana 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2009GMCSavana 3500RearSRW; 86mm Tall Disc; C-TEK Standard Disc Brake Rotors
2009HummerH2RearC-TEK Standard Disc Brake Rotors
2008ChevroletExpress 2500GASRearC-TEK Standard Disc Brake Rotors
2008ChevroletExpress 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2008GMCSavana 2500GASRearC-TEK Standard Disc Brake Rotors
2008GMCSavana 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2008HummerH2RearC-TEK Standard Disc Brake Rotors
2007ChevroletExpress 2500GASRearC-TEK Standard Disc Brake Rotors
2007ChevroletExpress 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2007ChevroletSilverado 1500 HD ClassicRearC-TEK Standard Disc Brake Rotors
2007ChevroletSuburban 2500RearC-TEK Standard Disc Brake Rotors
2007GMCSavana 2500GASRearC-TEK Standard Disc Brake Rotors
2007GMCSavana 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2007GMCSierra 1500 HD ClassicRearClassic GMT 800; Heavy Duty; C-TEK Standard Disc Brake Rotors
2007GMCYukon XL 2500RearC-TEK Standard Disc Brake Rotors
2007HummerH2RearC-TEK Standard Disc Brake Rotors
2006ChevroletAvalanche 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2006ChevroletExpress 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2006ChevroletExpress 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2006ChevroletSilverado 1500 HDRearC-TEK Standard Disc Brake Rotors
2006ChevroletSuburban 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2006GMCSavana 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2006GMCSavana 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2006GMCSierra 1500 HDRear8 Lug; Heavy Duty; C-TEK Standard Disc Brake Rotors
2006GMCYukon XL 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2006HummerH2RearC-TEK Standard Disc Brake Rotors
2005ChevroletAvalanche 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2005ChevroletExpress 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2005ChevroletExpress 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2005ChevroletSilverado 1500Crew Cab Pickup4WDRear2 Wheel Steering; C-TEK Standard Disc Brake Rotors
2005ChevroletSilverado 1500 HDRear2 Wheel Steering; C-TEK Standard Disc Brake Rotors
2005ChevroletSuburban 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2005GMCSavana 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2005GMCSavana 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2005GMCSierra 1500 HDRWDRear2 Wheel Steering; Heavy Duty; C-TEK Standard Disc Brake Rotors
2005GMCSierra 1500 HD4WDRear2 Wheel Steering; 8 Lug; Heavy Duty; C-TEK Standard Disc Brake Rotors
2005GMCYukon XL 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2005HummerH2RearC-TEK Standard Disc Brake Rotors
2004ChevroletAvalanche 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2004ChevroletExpress 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2004ChevroletExpress 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2004ChevroletSilverado 1500Rear8 Lug Wheels; Heavy Duty Package; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2004ChevroletSilverado 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2004ChevroletSuburban 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2004GMCSavana 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2004GMCSavana 3500Rear86mm Tall; SRW; C-TEK Standard Disc Brake Rotors
2004GMCSierra 1500Rear8 Lug Wheels; Heavy Duty Package; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2004GMCSierra 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2004GMCYukon XL 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2004HummerH2RearC-TEK Standard Disc Brake Rotors
2003ChevroletAvalanche 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2003ChevroletExpress 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2003ChevroletSilverado 1500 HDRear2 Wheel Steering; C-TEK Standard Disc Brake Rotors
2003ChevroletSilverado 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2003ChevroletSuburban 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2003GMCSavana 2500Rear8 Lug; 86mm Tall; C-TEK Standard Disc Brake Rotors
2003GMCSierra 1500 HDRear2 Wheel Steering; C-TEK Standard Disc Brake Rotors
2003GMCSierra 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2003GMCYukon XL 2500Rear2 Wheel Steering; 4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2003HummerH2RearC-TEK Standard Disc Brake Rotors
2002ChevroletAvalanche 2500Rear86mm Tall; C-TEK Standard Disc Brake Rotors
2002ChevroletSilverado 1500 HDRearC-TEK Standard Disc Brake Rotors
2002ChevroletSilverado 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2002ChevroletSuburban 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2002GMCSierra 1500 HDRearC-TEK Standard Disc Brake Rotors
2002GMCSierra 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2002GMCYukon XL 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2001ChevroletSilverado 1500 HD4WDRearC-TEK Standard Disc Brake Rotors
2001ChevroletSilverado 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2001ChevroletSuburban 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2001GMCSierra 1500 HD4WDRearC-TEK Standard Disc Brake Rotors
2001GMCSierra 2500AutomaticRearC-TEK Standard Disc Brake Rotors
2001GMCYukon XL 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2000ChevroletSilverado 2500Automatic6.0LV8RearC-TEK Standard Disc Brake Rotors
2000ChevroletSilverado 25005.3LV8RearC-TEK Standard Disc Brake Rotors
2000ChevroletSuburban 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
2000GMCSierra 2500Automatic6.0LV8RearC-TEK Standard Disc Brake Rotors
2000GMCSierra 25005.3LV8RearC-TEK Standard Disc Brake Rotors
2000GMCYukon XL 2500Rear4.63" Hub Hole; C-TEK Standard Disc Brake Rotors
1999ChevroletSilverado 2500Automatic6.0LV8RearC-TEK Standard Disc Brake Rotors
1999ChevroletSilverado 25005.3LV8RearC-TEK Standard Disc Brake Rotors
1999GMCSierra 2500Automatic6.0LV8RearC-TEK Standard Disc Brake Rotors
1999GMCSierra 25005.3LV8RearC-TEK Standard Disc Brake Rotors

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.