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Wagner Brake DSX125778E Disc Brake Rotor - Rear
| Brand | Wagner Brake DSX125778E |
|---|---|
| Position | Rear |
| Material | Cast iron |
| Nominal Thickness | 1.181 |
| Nominal Thickness | 30.0 |
| Construction | Full cast |
| Rust Resistant Coating | Yes |
| Overall Height | 132.4 |
| Overall Height | 5.212 |
| Outside Diameter | 12.800 |
| Outside Diameter | 325.2 |
| Surface Type | Smooth |
| Solid Or Vented Type Rotor | Vented |
| Bearings Included | No |
| Stud/Lug Hole Quantity | 8 |
| Directional or Non-Directional Brake Surface | Directional |
| Part Description | Disc brake rotor |
| Fits | Chevrolet and GMC · 34 vehicles |
Vented design. Helps manage heat during repeated braking and heavy-duty service.
Rust-resistant coating. Adds surface protection before and after installation.
Cast iron construction. Full-cast rotor build for strength and consistent braking.
Cross-references Centric Parts 120.66050, Centric Parts 121.66050 and Centric Parts 320.66050F for the same application. See all 25.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Brake Rotor for Heavy-Duty Rear Applications
The Wagner Brake DSX125778E is a vented disc brake rotor built for demanding stopping conditions. Its cast iron, full-cast construction and rust-resistant coating support consistent braking performance in heavy-duty service.
Fits 2001-2010 Chevrolet Silverado 3500, rear. Fits 2003-2008 Chevrolet Express 3500, rear. Fits 2001-2010 GMC Sierra 3500, rear. Fits 2003-2008 GMC Savana 3500, rear.
Key Features
- Cast iron construction with a full-cast design for strength and heat handling.
- Vented rotor design helps move heat away during repeated stops.
- Rust-resistant coating helps protect the rotor surface before and after installation.
- Smooth, directional braking surface supports even pad contact.
- 8-lug rotor configuration for listed heavy-duty rear fitments.
Detailed Description
Wagner Brake DSX125778E is engineered for vehicles that see frequent braking and higher load demands. The vented design, 12.800-inch outside diameter, 1.181-inch nominal thickness, and 132.4 mm overall height align with the listed rear applications on Chevrolet Silverado 3500, Chevrolet Express 3500, GMC Sierra 3500, and GMC Savana 3500. Part number DSX125778E is also cross-referenced to Monroe Shocks & Struts 172286 and 182286 for the same application.
Wagner SD rotors are positioned for severe-duty use, with metallurgy and heat management focused on durability under repeated stops. For buyers searching for a rear brake rotor for Chevrolet Silverado 3500 HD, GMC Sierra 3500 HD, or related heavy-duty van and truck applications, DSX125778E provides a direct replacement format for the listed fitments.
What It Helps Solve
- Brake fade during repeated stop-and-go driving.
- Heat buildup from towing, delivery, or municipal service.
- Surface wear from heavy-load braking cycles.
- Corrosion on exposed rotor surfaces.
- Uneven braking feel from worn rear rotors.
Installation Notes and Tips
Verify rear fitment by year, make, model, and position before installation. Confirm the 8-lug configuration and rotor dimensions match the existing part. Inspect pads, calipers, and hub surfaces during replacement to help maintain even braking performance.
Quality Assurance
Wagner Brake designs SD rotors for severe-duty braking environments, with emphasis on metallurgy, heat control, and durability for fleet and commercial use.
| Year | Make | Model | Body Type | Wheel Base | Position | Notes |
|---|---|---|---|---|---|---|
| 2010 | Chevrolet | Silverado 3500 HD | — | — | Rear | — |
| 2010 | GMC | Sierra 3500 HD | — | — | Rear | — |
| 2009 | Chevrolet | Silverado 3500 HD | — | — | Rear | — |
| 2009 | GMC | Sierra 3500 HD | — | — | Rear | — |
| 2008 | Chevrolet | Express 3500 | Cutaway Van | 139.0" | Rear | — |
| 2008 | Chevrolet | Silverado 3500 HD | — | — | Rear | — |
| 2008 | GMC | Savana 3500 | — | — | Rear | — |
| 2008 | GMC | Sierra 3500 HD | — | — | Rear | — |
| 2007 | Chevrolet | Express 3500 | Cutaway Van | 177.0" | Rear | — |
| 2007 | Chevrolet | Silverado 3500 Classic | — | — | Rear | — |
| 2007 | Chevrolet | Silverado 3500 HD | — | — | Rear | — |
| 2007 | GMC | Savana 3500 | — | — | Rear | — |
| 2007 | GMC | Sierra 3500 Classic | — | — | Rear | — |
| 2007 | GMC | Sierra 3500 HD | — | — | Rear | — |
| 2006 | Chevrolet | Express 3500 | — | — | Rear | — |
| 2006 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2006 | GMC | Savana 3500 | — | — | Rear | — |
| 2006 | GMC | Sierra 3500 | — | — | Rear | — |
| 2005 | Chevrolet | Express 3500 | — | — | Rear | — |
| 2005 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2005 | GMC | Savana 3500 | — | — | Rear | — |
| 2005 | GMC | Sierra 3500 | — | — | Rear | — |
| 2004 | Chevrolet | Express 3500 | — | — | Rear | — |
| 2004 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2004 | GMC | Savana 3500 | — | — | Rear | — |
| 2004 | GMC | Sierra 3500 | — | — | Rear | — |
| 2003 | Chevrolet | Express 3500 | — | — | Rear | — |
| 2003 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2003 | GMC | Savana 3500 | — | — | Rear | — |
| 2003 | GMC | Sierra 3500 | — | — | Rear | — |
| 2002 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2002 | GMC | Sierra 3500 | — | — | Rear | — |
| 2001 | Chevrolet | Silverado 3500 | — | — | Rear | — |
| 2001 | GMC | Sierra 3500 | — | — | Rear | — |
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