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Centric 120.66055 Disc Brake Rotor - Rear
| Brand | Centric 120.66055 |
|---|---|
| Position | Rear |
| 165.1 | |
| ABS Tone Ring Included | No |
| Bearings Included | No |
| Bolt Hole Quantity | 8 |
| Center Hole Diameter | 4.614 |
| Center Hole Diameter | 117.200 |
| Disc Mounting [cntrc] | Floating / DIH |
| Discard Thickness | 1.043 |
| Discard Thickness | 26.5 |
| Discard Thickness | 26.500 |
| Hat Finish | Coated |
| Height | 85.8 |
| Hub Hole/Whl Reg mm | 117.2 |
| Misc Holes [cntrc] | 0 |
| Mounting Bolt Hole Circle Diameter | 6.500 |
| Mounting Bolt Hole Circle Diameter | 165.100 |
| Mounting Type | Floating / DIH |
| Nominal Thickness | 1.146 |
| Nominal Thickness | 29.1 |
| Nominal Thickness | 29.100 |
| Outside Diameter | 12.992 |
| Outside Diameter | 330 |
| Outside Diameter | 330.000 |
| Overall Height | 3.378 |
| Overall Height | 85.800 |
| Solid Or Vented Type Rotor | Vented |
| Stud/Lug Hole Diameter | 0.650 |
| Stud/Lug Hole Diameter | 16.500 |
| Stud/Lug Hole Quantity | 8 |
| Surface Type | Smooth |
| Vane Style | Straight |
| Vane Style [cntrc] | Straight |
| Weight [cntrc] kgs | 10.450 |
| Weight [cntrc] lbs | 23.000 |
| Product line | Centric Premium Disc Brake Rotors |
| Fits | Chevrolet and GMC · 12 vehicles |
Electrocoated finish. Provides long-lasting corrosion protection against the elements.
Vented design. Helps air flow through the rotor for more efficient cooling.
Smooth surface. Delivers consistent braking contact and a cleaner feel.
Cross-references Four Seasons 55086, Raybestos Brakes 580173 and 27374 for the same application. See all 12.
Centric Premium Disc Brake Rotor for Rear Applications
Centric Premium Disc Brake Rotor part number 120.66055 is built for rear brake service on select Chevrolet and GMC trucks and SUVs, including Silverado 1500, Silverado 1500 HD, Sierra 1500 HD, Suburban 2500, and Yukon XL 2500 applications. It combines a smooth braking surface with a corrosion-resistant electrocoated finish for dependable service in demanding conditions.
Key Features
- Centric Premium Disc Brake Rotors line with electrocoating for long-lasting corrosion protection
- Rear vented rotor design with straight vane construction for heat management
- 12.992 in. outside diameter and 8-bolt mounting pattern
- Coated hat finish for added resistance to rust at the hub area
- Solid, smooth surface type for consistent pad contact
- Part number 120.66055 for direct reference in brake rotor replacement searches
Product Line Details
The Centric Premium Disc Brake Rotors line focuses on corrosion control and stable braking performance. This rotor uses an electrocoated finish rather than a basic phosphate coating, helping protect the rotor from moisture and road exposure after installation. The finish is engineered to hold up under extended salt-water exposure, making it a practical choice for rear brake maintenance on Chevrolet Silverado 1500 HD and GMC Sierra 1500 HD platforms.
Detailed Description
Centric 120.66055 is a rear disc brake rotor with a vented, straight-vane design, 330 mm outside diameter, 85.8 mm overall height, and 117.2 mm center hole diameter. The rotor is built with a floating/DIH mounting type and an 8-lug bolt pattern, and it is listed for 2003-2005 Chevrolet Silverado 1500 HD, 2005 Chevrolet Silverado 1500, 2003-2005 Chevrolet Suburban 2500, 2003-2005 GMC Yukon XL 2500, and 2003-2005 GMC Sierra 1500 HD rear brake applications. This part cross-references Raybestos Brakes 580173 for the same application.
What It Helps Address
- Rear brake rotor rust and surface corrosion
- Brake pulsation caused by worn or heat-affected rotors
- Uneven pad contact from a scored or worn braking surface
- Brake service needs on 2003-2005 Chevrolet Silverado 1500 HD rear applications
- Brake replacement on 2003-2005 GMC Sierra 1500 HD and Yukon XL 2500 rear applications
Installation Notes and Tips
Verify rotor dimensions, bolt pattern, and hub fitment before installation. Clean the hub mounting surface thoroughly to reduce runout concerns, and inspect pads, calipers, and hardware condition during brake service. For best results, follow the vehicle manufacturer’s brake service procedure and torque specifications.
Quality Assurance
Centric Premium Disc Brake Rotors are manufactured with an electrocoated finish to improve corrosion resistance compared with basic phosphate-coated rotors. The part number 120.66055 is built to support rear brake replacement on the listed Chevrolet and GMC applications with attention to fit, finish, and durability.
| Year | Make | Model | Body Type | Drive Type | Position | Notes |
|---|---|---|---|---|---|---|
| 2005 | Chevrolet | Silverado 1500 | Crew Cab Pickup | 4WD | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2005 | Chevrolet | Silverado 1500 HD | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2005 | Chevrolet | Suburban 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2005 | GMC | Sierra 1500 HD | — | RWD | Rear | Heavy Duty; Quadrasteer; Centric Premium Disc Brake Rotors |
| 2005 | GMC | Sierra 1500 HD | — | 4WD | Rear | 8 Lug; Heavy Duty; Quadrasteer; Centric Premium Disc Brake Rotors |
| 2005 | GMC | Yukon XL 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2004 | Chevrolet | Suburban 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2004 | GMC | Yukon XL 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2003 | Chevrolet | Silverado 1500 HD | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2003 | Chevrolet | Suburban 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2003 | GMC | Sierra 1500 HD | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
| 2003 | GMC | Yukon XL 2500 | — | — | Rear | Drive Axle Shaft Seal for Quadrasteer applications.; Centric Premium Disc Brake Rotors |
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