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Centric 123.99034 Brake Drum - Rear
| Brand | Centric 123.99034 |
|---|---|
| Position | Rear |
| Maximum Brake Diameter (Discard) | 11.670 |
| Maximum Brake Diameter (Discard) | 296.500 |
| Bolt Hole Quantity | 6 |
| Outside Diameter | 13.268 |
| Outside Diameter | 337.000 |
| Outer Cooling Fins | No |
| Mounting Hole Diameter | 0.500 |
| Mounting Hole Diameter | 12.700 |
| Nominal Drum Diameter | 11.614 |
| Nominal Drum Diameter | 295.000 |
| Bolt Circle Diameter [cntrc] in | 5.500 |
| Bolt Circle Diameter [cntrc] mm | 139.700 |
| Friction Surface Width [cntrc] in | 2.591 |
| Friction Surface Width [cntrc] mm | 65.800 |
| Height [cntrc] in | 3.169 |
| Height [cntrc] mm | 80.500 |
| Hub Hole / Register [cntrc] in | 3.980 |
| Hub Hole / Register [cntrc] mm | 101.100 |
| Misc Holes [cntrc] | 1 |
| Mounting Type [cntrc] | Floating |
| Weight [cntrc] kgs | 9.727 |
| Weight [cntrc] lbs | 21.400 |
| Product line | C-TEK Standard Brake Drums |
| Fits | Chevrolet · 8 vehicles |
Standard brake drum. A straightforward replacement for drum brake service.
Floating mounting type. Helps simplify installation and alignment.
Brake drum design. Built with a 6-bolt pattern and 2.591-inch friction surface width.
Cross-references Centric Parts 123.99034, 27034 and 94726742 for the same application. See all 3.
Rear Brake Drum for Chevrolet Colorado and S10
Centric C-TEK Standard Brake Drums 123.99034 is a rear brake drum built for select Chevrolet Colorado and Chevrolet S10 applications. It follows the dimensions and mounting details needed for direct replacement service, with a 295.000 mm nominal drum diameter and 337.000 mm outside diameter.
C-TEK Standard Brake Drum Features
- Centric C-TEK Standard Brake Drums line for OE-style replacement service
- Rear brake drum application for Chevrolet Colorado and Chevrolet S10
- Nominal drum diameter: 11.614 in / 295.000 mm
- Maximum brake diameter (discard): 11.670 in / 296.500 mm
- Outside diameter: 13.268 in / 337.000 mm
- Friction surface width: 2.591 in / 65.800 mm
- Height: 3.169 in / 80.500 mm
- 6-bolt pattern with 5.500 in / 139.700 mm bolt circle diameter
- Floating mounting type with 3.980 in / 101.100 mm hub hole/register
- No outer cooling fins
Product Details
Centric Part Number 123.99034 is part of the C-TEK Standard Brake Drums line, which is positioned as a practical replacement option with features and benefits associated with premium replacement parts. This rear brake drum is specified for 2013-2015 Chevrolet Colorado rear applications with 300mm disc or 280mm disc notes, and for 2016-2017 Chevrolet S10 rear applications. The drum uses a 6-hole mounting layout, 0.500 in mounting hole diameter, and 1 miscellaneous hole, supporting the fitment requirements listed for these vehicles. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.
Common Replacement Reasons
- Rear brake drum wear from normal braking use
- Out-of-spec drum diameter during brake service
- Brake pulsation or uneven rear braking performance
- Noise or scoring on the drum friction surface
- Need for a direct replacement on Chevrolet Colorado or Chevrolet S10 rear brake service
Installation Notes and Tips
Verify rear axle and brake configuration before installation, especially on 2013-2015 Chevrolet Colorado models noted with 300mm disc or 280mm disc. Confirm drum diameter, bolt circle, hub register, and mounting-hole dimensions against the existing part before assembly. Clean the hub and friction contact surfaces, inspect related rear brake components, and measure the drum against the discard specification before use. Centric 123.99034 should be matched to the listed rear fitment only.
Quality Assurance
Centric’s C-TEK Standard Brake Drums are presented as replacement parts with features and benefits aligned to premium service parts. Part Number 123.99034 is built to published dimensional specifications for the listed Chevrolet Colorado and Chevrolet S10 rear applications.
| Year | Make | Model | Position | Notes |
|---|---|---|---|---|
| 2017 | Chevrolet | S10 | Rear | C-TEK Standard Brake Drums |
| 2016 | Chevrolet | S10 | Rear | C-TEK Standard Brake Drums |
| 2015 | Chevrolet | Colorado | Rear | 300mm Disc; C-TEK Standard Brake Drums |
| 2015 | Chevrolet | Colorado | Rear | 280mm Disc; C-TEK Standard Brake Drums |
| 2014 | Chevrolet | Colorado | Rear | 280mm Disc; C-TEK Standard Brake Drums |
| 2014 | Chevrolet | Colorado | Rear | 300mm Disc; C-TEK Standard Brake Drums |
| 2013 | Chevrolet | Colorado | Rear | 280mm Disc; C-TEK Standard Brake Drums |
| 2013 | Chevrolet | Colorado | Rear | 300mm Disc; C-TEK Standard Brake Drums |
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