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Raybestos MC391466 Brake Master Cylinder
| Brand | Raybestos MC391466 |
|---|---|
| Mounting Hole Quantity | 2 |
| Master Cylinder Material | Aluminum |
| Mounting Hole Diameter | 0.354 |
| Bore Size | 1.313 |
| Primary Port Thread A | 1/2"-20 |
| Secondary Port Thread A | 7/16"-24 |
| Product line | Raybestos Element 3 |
| Fits | Ram · 8 vehicles |
Aluminum construction. Helps reduce weight without sacrificing strength.
Brake master cylinder. Converts pedal force into hydraulic pressure for reliable braking.
Element3 line. Part of Raybestos' premium brake product family.
Cross-references Centric Parts 130.67049 and 68144489AA for the same application. See all 2.
Raybestos MC391466 Brake Master Cylinder
The Raybestos MC391466 is a brake master cylinder for select Ram 2500 applications with a vacuum booster. Built with an aluminum master cylinder body and a 1.313 bore size, it is specified for consistent hydraulic response in the brake system. This Raybestos Element3, New part is listed for 2012-2018 Ram 2500 models in the fitment data below.
Key Features
- Brake master cylinder for hydraulic brake system service
- Aluminum construction for a lightweight, corrosion-resistant design
- 1.313 bore size for the listed Ram 2500 applications
- 2 mounting holes with 0.354 mounting hole diameter
- Primary port thread: 1/2"-20
- Secondary port thread: 7/16"-24
- Raybestos Element3, New product line
Raybestos Element3 Line
Raybestos Element3, New identifies the product line for this master cylinder. In this application, the line designation helps separate this part from other Raybestos brake hydraulics offerings and confirms the intended configuration for the listed Ram 2500 fitments.
Detailed Description
The Raybestos MC391466 brake master cylinder is engineered for Ram 2500 trucks that use a vacuum booster, with the exception noted for 2015 Hydro Boost applications. The aluminum master cylinder housing supports a durable, service-ready brake hydraulic assembly, while the 1.313 bore size and specified port threads help match the original brake system layout. If you are replacing a worn or leaking master cylinder on a Ram 2500, MC391466 provides the fitment and port configuration needed for the listed vehicles. This part cross-references Centric Parts 130.67049 for the same application.
What This Part Helps Address
- Brake pedal travel that has become excessive
- Internal master cylinder leakage
- Loss of hydraulic pressure in the brake system
- Brake fluid seepage around the master cylinder
- Replacement needs on Ram 2500 trucks with the listed booster configuration
Installation Notes and Tips
Verify booster type before installation. This part is listed for 2012-2014 Ram 2500, 2016-2018 Ram 2500 with a vacuum booster, and 2015 Ram 2500 except Hydro Boost. Confirm the primary and secondary port thread sizes match the vehicle brake lines before assembly. After installation, bleed the brake system according to the vehicle service procedure to remove air from the hydraulic circuit.
Quality Assurance
Raybestos brake hydraulics are built to meet application-specific fitment requirements for the listed Ram 2500 models. The MC391466 part number is also referenced by OE interchange 68144489AA for this application.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2018 | Ram | 2500 | — | — | — | N/A | W/ Vacuum Booster; Raybestos Element 3 |
| 2017 | Ram | 2500 | — | — | — | N/A | W / Vacuum Booster; Raybestos Element 3 |
| 2016 | Ram | 2500 | — | — | — | N/A | W/ Vacuum Booster; Raybestos Element 3 |
| 2015 | Ram | 2500 | — | — | — | N/A | Except Hydro Boost; Element3; New |
| 2014 | Ram | 2500 | 6.4L | V8 | — | N/A | Element3; New |
| 2014 | Ram | 2500 | 5.7L | V8 | GAS | N/A | Element3; New |
| 2013 | Ram | 2500 | 5.7L | V8 | — | N/A | Element3; New |
| 2012 | Ram | 2500 | 5.7L | V8 | — | N/A | Element3; New |
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