Dorman M630454 brake master cylinder for the 2008 Chevrolet Express 2500 and other vehicles turns pedal force into hydraulic pressure for the brakes.
- First Stop line master cylinder with an aluminum housing
- Rubber components made of EPDM compound for resistance to glycol-based brake fluid
- Made entirely of new materials
- Made to meet SAE International standards
- Two outlets with M12 X 1.0 threads
Quick facts
- Part: Dorman M630454 brake master cylinder
- Fits: 2008 Chevrolet Express 2500 and other vehicles
- Material: Aluminum
- Condition: New
A soft or sinking brake pedal, brake fluid around the master cylinder body or a brake warning light can mean the master cylinder is wearing out. Before you replace it, rule out a leaking brake line, caliper or wheel cylinder and a low fluid level in the reservoir, since those can give a similar pedal feel.
Fits
The 2008 Chevrolet Express 2500, the 2008 Chevrolet Express 3500 and the 2007-2008 Chevrolet Silverado 2500 HD are among the vehicles this master cylinder fits. Open the "Vehicles it fits" section and look up your exact model and engine. A 2008 Chevrolet Express 2500 takes one master cylinder, and this listing is one.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 36.9 mm
- Rearward outlet size: M12 X 1.0
- Secondary outlet thread diameter: M12 X 1.0
- Primary outlet thread pitch: 1 mm
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One master cylinder with its reservoir and sensor. Mounting hardware is not included.
Interchange: 100-2647 · 13-3331 · 10-3331 · 10-4305 · 130.66057 · 355-47183
15106442 · 15146189 · 19209189 · NM4183 · MC391082 · F143037 · MC143037
This part cross-references / interchanges with the following part numbers:
100-2647, 13-3331, 10-3331, 10-4305, 130.66057, 355-47183, 15106442, 15146189, 19209189, NM4183, MC391082, F143037, MC143037
Frequently Asked Questions
Does the Dorman M630454 master cylinder fit the 2008 Chevrolet Express 3500?
Yes. Dorman M630454 fits the 2008 Chevrolet Express 3500, which takes one master cylinder. Open the "Vehicles it fits" section to find other models and engines.
What comes with the Dorman M630454 brake master cylinder?
Dorman M630454 includes its reservoir and sensor. Mounting hardware is not included.
What brake fluid are the rubber parts in this master cylinder made for?
The rubber components in Dorman M630454 are made of EPDM compound, which resists glycol-based brake fluid.
Which signs can point to a worn brake master cylinder?
A pedal that sinks slowly, fluid showing on the cylinder body or a lit brake warning light can be signs. A shop can test the brake system to see where the problem is.
Does the M630454 master cylinder interchange with part number 13-3331?
Yes. The number 13-3331 is on this master cylinder's Interchange line, along with 100-2647, 10-4305 and several others.
