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DuraGo BR31377 Disc Brake Rotor - Front
| Brand | DuraGo BR31377 |
|---|---|
| Position | Front |
| ABS Tone Ring Included | No |
| Center Hole Diameter | 2.17 |
| Center Hole Diameter | 55.2 |
| Construction | Full Cast |
| Conventional Or Drum-In-Hat Type Rotor | Conventional |
| Cross Drilled | No |
| Directional or Non-Directional Brake Surface | Non-Directional |
| Discard Thickness | 0.79 |
| Discard Thickness | 20 |
| Material | Cast Iron |
| Mounting Bolt Hole Circle Diameter | 3.94 |
| Mounting Bolt Hole Circle Diameter | 100 |
| Mounting Bolt Hole Diameter | 0.58 |
| Mounting Bolt Hole Diameter | 14.8 |
| Mounting Bolt Hole Quantity | 5 |
| Nominal Thickness | 0.87 |
| Nominal Thickness | 22 |
| Outside Diameter | 10.04 |
| Outside Diameter | 255 |
| Overall Height | 1.93 |
| Overall Height | 49.1 |
| Rust Resistant Coating | No |
| Slotted | No |
| Solid Or Vented Type Rotor | Vented |
| Fits | Toyota · 6 vehicles |
OE-style fit. Manufactured to meet fit, form, and function requirements.
Vented design. Helps air flow through the rotor for more consistent braking.
Cast iron construction. Full-cast rotor built for dependable braking performance.
Cross-references Gates 31377, Parts Authority PRT5586 and Raybestos Brakes 980312 for the same application. See all 9.
DuraGo BR31377 Front Brake Rotor
The DuraGo BR31377 is a front disc brake rotor built for 2004-2009 Toyota Prius applications. It uses a full cast, vented cast iron construction with a non-directional brake surface for consistent service replacement on the Prius front axle.
Key Features
- Fits 2004-2009 Toyota Prius, front
- Part number BR31377
- Cast iron, full cast construction
- Vented rotor design for front brake use
- Outside diameter: 255 mm (10.04 in.)
- Nominal thickness: 22 mm (0.87 in.)
- Discard thickness: 20 mm (0.79 in.)
- 5-bolt mounting pattern with 100 mm bolt circle
- Center hole diameter: 55.2 mm
- Non-directional brake surface
- No cross-drilling or slotting
Detailed Description
DuraGo BR31377 is a conventional front brake rotor for the Toyota Prius, covering 2004-2009 model years. The rotor is manufactured from cast iron in a full cast, vented design to match common OE-style brake service requirements. Its 255 mm outside diameter, 22 mm nominal thickness, and 55.2 mm center hole diameter provide the dimensional details needed for accurate brake rotor replacement on the Prius front position. This part cross-references Raybestos Brakes 980312 for the same application.
Common Brake Issues This Rotor Addresses
- Front brake pulsation from rotor wear or thickness variation
- Brake noise caused by worn or uneven rotor surfaces
- Reduced braking consistency from a rotor at or near discard thickness
- Service replacement needs for a vented front rotor on a Toyota Prius
- Fitment matching for 2004-2009 Toyota Prius front brake repair
Installation Notes and Tips
Verify rotor dimensions, bolt pattern, and center bore before installation. Clean the hub mounting surface thoroughly to help prevent runout-related brake pulsation. Because this rotor uses a non-directional surface and is not cross-drilled or slotted, standard brake service procedures apply. Confirm pad condition and inspect caliper hardware, guide pins, and wheel bearings during brake work.
Quality Assurance
DuraGo manufactures brake products through ISO-certified factories and focuses on fit, form, and function for aftermarket brake service. The brand’s brake drum and rotor program is built around catalog accuracy and professional replacement applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2009 | Toyota | Prius | Front | — |
| 2008 | Toyota | Prius | Front | — |
| 2007 | Toyota | Prius | Front | — |
| 2006 | Toyota | Prius | Front | — |
| 2005 | Toyota | Prius | Front | — |
| 2004 | Toyota | Prius | Front | — |
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