OE Quality
60-Day Returns

Dynamite Friction 830-47037L Disc Brake Rotor - Front Left
Overview of Dynamite Friction DFC Geoperformance Rotor
The Dynamite Friction DFC Geoperformance Rotor - Drilled and Slotted (part number 830-47037L) is engineered for Chevrolet Cobalt and HHR models. This vented disc brake rotor features a directional, slotted and drilled surface designed to enhance braking performance and heat dissipation.
- Compatible with Chevrolet Cobalt and HHR vehicles
- Directional, slotted and drilled surface for improved brake pad bite and cooling
- Vented rotor design to reduce heat buildup
- Rust resistant coating for extended durability
- Plain disc finish with Geospec silver grey hat finish
- 5 bolt holes with 14.3 mm diameter and 110 mm bolt circle diameter
- Nominal thickness of 25.7 mm and discard thickness of 24 mm
- Outside diameter of 315.5 mm and overall height of 42.8 mm
Detailed Product Description
The 830-47037L rotor from Dynamite Friction is part of the DFC Geoperformance Rotor - Drilled and Slotted line, which focuses on delivering reliable braking performance with enhanced heat management. The rotor’s vented design allows air to flow between the rotor surfaces, helping to dissipate heat more effectively during braking. The directional surface pattern, combining drilled holes and slots, aids in removing brake dust, gases, and water, which can improve pad contact and reduce brake fade.
Constructed with a plain disc finish and a Geospec silver grey hat finish, this rotor also features a rust resistant coating to protect against corrosion, extending the rotor’s service life. The rotor’s dimensions, including a 315.5 mm outside diameter and 42.8 mm overall height, are designed to meet OEM specifications for Chevrolet Cobalt and HHR models, ensuring proper fitment and performance.
Applications and Problem Solving
- Replaces worn or warped rotors on Chevrolet Cobalt and HHR vehicles
- Addresses brake fade caused by excessive heat during heavy braking
- Improves braking response in wet or dusty conditions with slotted and drilled surface
- Prevents rust and corrosion that can lead to rotor degradation
- Restores proper rotor thickness and surface integrity for safe braking
Installation Notes and Tips
When installing the 830-47037L rotor, ensure the rotor is mounted with the directional surface facing the correct rotation direction as indicated by the manufacturer. Verify that the 5 bolt holes with 14.3 mm diameter align with the vehicle’s hub and that the 110 mm bolt circle diameter matches the wheel hub pattern. It is recommended to inspect brake pads and hardware during installation and replace if necessary to maintain optimal braking performance.
Quality Assurance and Warranty
Dynamite Friction manufactures the DFC Geoperformance Rotor - Drilled and Slotted to meet or exceed OEM standards for fit, form, and function. The rotor includes a rust resistant coating to enhance durability. Warranty information is available from the manufacturer or distributor and should be reviewed prior to installation.
| Brand | Dynamite Friction |
|---|---|
| Part Number | 830-47037L |
| Position | DFC Geoperformance Rotor - Drilled and Slotted, Front Left |
| Discard Thickness | 24 |
| Nominal Thickness | 25.7 |
| Bolt Hole Diameter | 14.3 |
| Disc Finish | Plain |
| Hat Finish | Geospec silver grey |
| Rust Resistant Coating | Yes |
| Bolt Hole Quantity | 5 |
| Overall Height | 42.8 |
| Outside Diameter | 315.5 |
| Height | 42.8 |
| Surface Type | Slotted x drilled |
| Solid Or Vented Type Rotor | Vented |
| Center Hole Diameter | 65.6 |
| Stud/Lug Hole Quantity | 5 |
| Stud/Lug Hole Diameter | 14.3 |
| Directional or Non-Directional Brake Surface | Directional |
| Bolt Circle Diameter | 110 |
| Stud/Lug Hole Circle Diameter | 110 |
This part fits 6 vehicles. Search below:
| Year | Make | Model | Submodel | Position | Notes |
|---|---|---|---|---|---|
| 2010 | Chevrolet | Cobalt | Front Left | Brembo Front Calipers; DFC Geoperformance Rotor - Drilled and Slotted | |
| 2010 | Chevrolet | HHR | Front Left | Performance Package; DFC Geoperformance Rotor - Drilled and Slotted | |
| 2009 | Chevrolet | Cobalt | Front Left | Brembo Front Calipers; DFC Geoperformance Rotor - Drilled and Slotted | |
| 2009 | Chevrolet | HHR | Front Left | Performance Package; DFC Geoperformance Rotor - Drilled and Slotted | |
| 2008 | Chevrolet | Cobalt | SS | Front Left | Brembo Front Calipers; DFC Geoperformance Rotor - Drilled and Slotted |
| 2007 | Chevrolet | Cobalt | Front Left | Brembo Front Calipers; DFC Geoperformance Rotor - Drilled and Slotted |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.