OE Quality
60-Day Returns

Raybestos 56946R Disc Brake Rotor - Front or Rear
Overview of Raybestos R-Line Disc Brake Rotor 56946R
The Raybestos R-Line Disc Brake Rotor 56946R is engineered for reliable braking performance on the Hummer H1. This vented, conventional rotor is designed to meet the specific requirements of your vehicle, ensuring consistent stopping power and durability.
- Compatible with Hummer H1 models
- Vented disc brake rotor for improved heat dissipation
- Overall diameter of 11.990 inches (304.55 mm)
- Nominal thickness of 1.020 inches (25.9 mm) with discard thickness at 0.972 inches (24.7 mm)
- Six mounting bolt holes with a 110 mm (4.331 inch) bolt circle diameter
- Center hole diameter of 3.548 inches (90.1 mm)
- Conventional rotor design with 6 stud/lug holes
Raybestos R-Line Product Line Details
The R-Line by Raybestos focuses on delivering dependable brake components that meet or exceed OEM specifications. This product line emphasizes quality materials and precise manufacturing tolerances, making the 56946R rotor a suitable replacement part for maintaining the braking integrity of your Hummer H1.
Technical Specifications and Features
This disc brake rotor features a vented design that enhances cooling during braking, reducing the risk of brake fade under heavy use. The rotor’s nominal thickness is 1.020 inches (25.9 mm), with a discard thickness of 0.972 inches (24.7 mm), indicating when replacement is necessary to maintain safe braking performance. The overall height measures 1.415 inches (35.95 mm), and the rotor includes six mounting bolt holes arranged on a 110 mm (4.331 inch) bolt circle diameter, compatible with the Hummer H1’s hub assembly. The center hole diameter of 3.548 inches (90.1 mm) ensures proper fitment and alignment.
Common Applications and Problem Solving
- Replacement for worn or warped rotors on Hummer H1 vehicles
- Addresses brake pulsation and vibration issues
- Improves heat dissipation to reduce brake fade
- Restores braking performance after rotor surface damage
- Compatible upgrade for maintaining OEM braking standards
Installation Notes and Tips
When installing the Raybestos R-Line 56946R rotor on your Hummer H1, ensure the mounting surface is clean and free of rust or debris. Verify the rotor thickness before installation to confirm it meets the nominal specification. Use proper torque settings on the six mounting bolts to secure the rotor evenly. It is recommended to replace brake pads simultaneously to optimize braking performance and rotor longevity.
Quality Assurance and Warranty
Raybestos manufactures the R-Line 56946R rotor to meet strict quality control standards, ensuring consistent performance and durability. While specific warranty details are not provided here, Raybestos products typically come with a limited warranty against defects in materials and workmanship. Always consult product documentation or the manufacturer for exact warranty terms.
| Brand | Raybestos |
|---|---|
| Part Number | 56946R |
| Position | R-Line, Front |
| Center Hole Diameter | 3.548 |
| Center Hole Diameter | 90.100 |
| Conventional Or Drum-In-Hat Type Rotor | Conventional |
| Discard Thickness | 0.972 |
| Discard Thickness | 24.700 |
| Mounting Bolt Hole Circle Diameter | 4.331 |
| Mounting Bolt Hole Circle Diameter | 110.000 |
| Mounting Bolt Hole Diameter | 4.331 |
| Mounting Bolt Hole Diameter | 110.000 |
| Mounting Bolt Hole Quantity | 6 |
| Nominal Thickness | 1.020 |
| Nominal Thickness | 25.900 |
| Outside Diameter | 11.990 |
| Outside Diameter | 304.550 |
| Overall Height | 1.415 |
| Overall Height | 35.950 |
| Solid Or Vented Type Rotor | Vented |
| Stud/Lug Hole Quantity | 6 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2006 | Hummer | H1 | Front | R-Line |
| 2006 | Hummer | H1 | Rear | R-Line |
| 2004 | Hummer | H1 | Front | 12,100 Pound Gross Vehicle Weight; R-Line |
| 2004 | Hummer | H1 | Rear | 12,100 Pound Gross Vehicle Weight; R-Line |
| 2003 | Hummer | H1 | Front | 12,100 Pound Gross Vehicle Weight; R-Line |
| 2003 | Hummer | H1 | Rear | 12,100 Pound Gross Vehicle Weight; R-Line |
| 2002 | Hummer | H1 | Front | 12,100 Pound Gross Vehicle Weight; R-Line |
| 2002 | Hummer | H1 | Rear | 12,100 Pound Gross Vehicle Weight; R-Line |
* 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.