OE Quality
60-Day Returns

DuraGo BR55040-01 Disc Brake Rotor - Front
Overview of DuraGo BR55040-01 Disc Brake Rotor
The DuraGo BR55040-01 is a cast iron vented disc brake rotor designed for reliable braking performance. Engineered for select Chevrolet, Oldsmobile, and Pontiac models, this rotor offers durability and consistent stopping power for vehicles like the Malibu, Alero, Classic, Cutlass, and Grand Am.
- Constructed from full cast iron for strength and heat dissipation
- Vented design to improve cooling and reduce brake fade
- Rust resistant coating to extend rotor life
- Non-directional brake surface for versatile installation
- Compatible with 5 mounting bolt holes and conventional rotor setup
Detailed Product Features and Specifications
The DuraGo BR55040-01 rotor features a nominal thickness of 1.02 inches (26 mm) and a discard thickness of 0.97 inches (24.7 mm), ensuring it meets precise wear limits for safe operation. Its overall height measures 1.93 inches (48.9 mm), with an outside diameter of 10.96 inches (278.3 mm), fitting the specified vehicle applications accurately. The rotor includes five mounting bolt holes arranged on a 4.65 inch (118 mm) bolt circle diameter, with each hole measuring 0.64 inches (16.2 mm) in diameter. The center hole diameter is 2.78 inches (70.7 mm). This conventional, vented rotor does not include an ABS tone ring and features a non-directional braking surface, allowing for flexible installation without concern for rotor orientation. The rust resistant coating helps protect the rotor surface from corrosion, maintaining performance over time.
Compatible Vehicles and Applications
- Chevrolet Malibu
- Oldsmobile Alero and Cutlass
- Pontiac Grand Am and Classic
This rotor is designed specifically for these models, ensuring proper fitment and brake system compatibility.
Common Issues Addressed by DuraGo BR55040-01
- Brake rotor wear and thinning beyond discard thickness
- Overheating and brake fade due to insufficient cooling
- Corrosion and rust buildup on rotor surfaces
- Uneven braking caused by warped or damaged rotors
- Noise and vibration from worn or incompatible rotors
Installation Notes and Tips
When installing the DuraGo BR55040-01 rotor, ensure the rotor surface is clean and free of debris before mounting. Verify the rotor thickness is above the discard limit to maintain safety standards. Since this rotor is non-directional, it can be installed on either side without affecting performance. Use proper torque specifications for the 5 mounting bolts to avoid rotor warping. This rotor is designed for vehicles with conventional brake systems and does not include an ABS tone ring, so confirm compatibility with your vehicle's braking components.
Quality Assurance and Warranty
DuraGo manufactures this rotor with full cast iron construction and a rust resistant coating to meet industry standards for durability and performance. While specific warranty details are not provided, DuraGo products typically adhere to quality control processes to ensure reliable operation in compatible Chevrolet, Oldsmobile, and Pontiac vehicles.
| Brand | DuraGo |
|---|---|
| Part Number | BR55040-01 |
| Material | Cast iron |
| Discard Thickness | 0.97 |
| Discard Thickness | 24.7 |
| Nominal Thickness | 1.02 |
| Nominal Thickness | 26 |
| Construction | Full cast |
| Rust Resistant Coating | Yes |
| Overall Height | 1.93 |
| Overall Height | 48.9 |
| Outside Diameter | 10.96 |
| Outside Diameter | 278.3 |
| Mounting Bolt Hole Quantity | 5 |
| ABS Tone Ring Included | No |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 2.78 |
| Center Hole Diameter | 70.7 |
| Mounting Bolt Hole Circle Diameter | 118 |
| Mounting Bolt Hole Circle Diameter | 4.65 |
| Mounting Bolt Hole Diameter | 0.64 |
| Mounting Bolt Hole Diameter | 16.2 |
| Directional or Non-Directional Brake Surface | Non-directional |
| Conventional Or Drum-In-Hat Type Rotor | Conventional |
| Cross Drilled | No |
| Slotted | No |
This part fits 25 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2005 | Chevrolet | Classic | Front | Coated Hat and Edge for Rust Resistance |
| 2005 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 2004 | Chevrolet | Classic | Front | Coated Hat and Edge for Rust Resistance |
| 2004 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 2004 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 2003 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 2003 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 2003 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 2002 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 2002 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 2002 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 2001 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 2001 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 2001 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 2000 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 2000 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 2000 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 1999 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 1999 | Oldsmobile | Alero | Front | Coated Hat and Edge for Rust Resistance |
| 1999 | Oldsmobile | Cutlass | Front | 10.94 Inch Rotor Diameter; Coated Hat and Edge for Rust Resistance |
| 1999 | Pontiac | Grand Am | Front | Coated Hat and Edge for Rust Resistance |
| 1998 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 1998 | Oldsmobile | Cutlass | Front | 10.94 Inch Rotor Diameter; Coated Hat and Edge for Rust Resistance |
| 1997 | Chevrolet | Malibu | Front | Coated Hat and Edge for Rust Resistance |
| 1997 | Oldsmobile | Cutlass | Front | 10.94 Inch Rotor Diameter; Coated Hat and Edge for Rust Resistance |
* 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.