Centric 120.66043 Disc Brake Rotor - Rear

Centric Premium Rear Disc Brake Rotor

Centric Premium Disc Brake Rotor 120.66043 is a rear vented rotor built for heavy-duty GM applications that need consistent braking performance and corrosion resistance. It uses an electrocoated finish to help protect the rotor surface during service, storage, and exposure to moisture.

Compatible With select Chevrolet Express 2500 and Express 3500, GMC Savana 2500 and Savana 3500, plus other rear applications listed below, this rotor is sized for vehicles that use an 8-lug, floating/DIH mounting setup.

Key Features

• Centric Premium Disc Brake Rotors product line
• Part number 120.66043
• Rear disc brake rotor with vented construction
• Electrocoated finish for corrosion protection
• Smooth surface type
• Straight vane style
• 8 bolt hole / 8 stud-lug hole design
• Outside diameter: 330 mm (12.992 in.)
• Nominal thickness: 29 mm (1.142 in.)
• Discard thickness: 26.5 mm (1.043 in.)
• Center hole diameter: 117.6 mm (4.630 in.)
• Overall height: 85.7 mm (3.374 in.)

Product Details

Centric Premium Disc Brake Rotors are built around an electrocoating finish rather than a basic phosphate coating. According to Centric, that finish is engineered to resist corrosion far longer after installation, even in wet and salty environments. The rotor’s vented, straight-vane design supports heat management in demanding rear brake service, while the coated hat finish helps maintain a cleaner appearance around the hub area. This part number, 120.66043, is a direct-fit rear rotor for a wide range of GM vans and heavy-duty trucks, including Chevrolet Express, GMC Savana, Chevrolet Silverado HD, GMC Sierra HD, and Hummer H2 applications listed in the fitment data.

This part cross-references Raybestos Brakes 580380 and PowerStop AR8643 for the same application.

What It Helps Address

• Rear brake pulsation caused by worn rotor surfaces
• Corrosion on exposed rotor areas after winter or wet-weather driving
• Brake noise related to uneven rotor wear
• Reduced braking consistency from heat-stressed rear rotors
• Service issues on GM 8-lug rear brake setups

Installation Notes and Fitment

Fits 2021-2023 Chevrolet Express 2500, rear. Fits 2007-2009 Chevrolet Express 2500, rear. Fits 2023 Chevrolet Express 3500, rear, JH6. Fits 2022 Chevrolet Express 3500, rear, SRW; JH6. Fits 2021 Chevrolet Express 3500, rear, Single Rear Wheel. Fits 2011-2020 Chevrolet Express 2500, rear, 86mm Tall. Fits 2018-2020 Chevrolet Express 3500, rear, designed for vehicles with Single Rear Wheel setups. Fits 2009-2017 Chevrolet Express 3500, rear, SRW; 86mm Tall Disc. Fits 2004-2008 Chevrolet Express 3500, rear, 86mm Tall; SRW. Fits 2003-2006 Chevrolet Express 2500, rear, 8 Lug; 86mm Tall. Fits 2018-2023 GMC Savana 2500, rear. Fits 2023 GMC Savana 3500, rear, JH6. Fits 2022 GMC Savana 3500, rear, SRW; JH6. Fits 2021 GMC Savana 3500, rear, Single Rear Wheel. Fits 2007-2008 GMC Savana 2500, rear. Fits 2009-2017 GMC Savana 2500, rear, 86mm Tall. Fits 2009-2017 GMC Savana 3500, rear, SRW; 86mm Tall Disc. Fits 2004-2008 GMC Savana 3500, rear, 86mm Tall; SRW. Fits 2003-2006 GMC Savana 2500, rear, 8 Lug; 86mm Tall. Fits 2003-2009 Hummer H2, rear. Fits 2007 Chevrolet Silverado 1500 HD Classic, rear. Fits 2007 Chevrolet Suburban 2500, rear. Fits 2007 GMC Sierra 1500 HD Classic, rear, Classic GMT 800; Heavy Duty. Fits 2007 GMC Yukon XL 2500, rear. Fits 2002-2006 Chevrolet Avalanche 2500, rear, 86mm Tall. Fits 2006 Chevrolet Silverado 1500 HD, rear. Fits 2001-2002 Chevrolet Silverado 1500 HD, rear. Fits 2006 Chevrolet Suburban 2500, rear, 4.63" Hub Hole. Fits 2000-2002 Chevrolet Suburban 2500, rear, 4.63" Hub Hole. Fits 2006 GMC Savana 2500, rear, 8 Lug; 86mm Tall. Fits 2006 GMC Sierra 1500 HD, rear, 8 Lug; Heavy Duty. Fits 2006 GMC Yukon XL 2500, rear, 4.63" Hub Hole. Fits 2000-2002 GMC Yukon XL 2500, rear, 4.63" Hub Hole. Fits 2005 Chevrolet Silverado 1500, rear, 2 Wheel Steering. Fits 2005 Chevrolet Silverado 1500 HD, rear, 2 Wheel Steering. Fits 2003 Chevrolet Silverado 1500 HD, rear, 2 Wheel Steering. Fits 2005 Chevrolet Silverado 2500 HD, rear, 4.63" Hub Hole. Fits 2003-2005 Chevrolet Suburban 2500, rear, 2 Wheel Steering; 4.63" Hub Hole. Fits 2005 GMC Sierra 1500 HD, rear, 2 Wheel Steering; Heavy Duty. Fits 2005 GMC Sierra 1500 HD, rear, 2 Wheel Steering; 8 Lug; Heavy Duty. Fits 2005 GMC Sierra 2500 HD, rear, 4.63" Hub Hole. Fits 2003-2005 GMC Yukon XL 2500, rear, 2 Wheel Steering; 4.63" Hub Hole. Fits 2004 Chevrolet Silverado 1500, rear, 8 Lug Wheels; Heavy Duty Package; 4.63" Hub Hole. Fits 1999-2004 Chevrolet Silverado 2500, rear. Fits 2004 GMC Sierra 1500, rear, 8 Lug Wheels; Heavy Duty Package; 4.63" Hub Hole. Fits 1999-2004 GMC Sierra 2500, rear. Fits 2003 GMC Sierra 1500 HD, rear, 2 Wheel Steering. Fits 2001-2002 GMC Sierra 1500 HD, rear.

Quality Assurance

Centric designs this Premium Disc Brake Rotor line with an electrocoated finish to improve corrosion protection compared with basic phosphate-coated rotors. The coated hat finish and vented construction support long-term service on rear brake systems used in Chevrolet Express, GMC Savana, and related GM heavy-duty applications.