Dorman M630793 brake master cylinder for the 2002-2007 Isuzu NPR and other vehicles turns pedal force into hydraulic pressure for the brakes.
- Cylinder housing is cast iron, constructed to match the casting material of the original part
- Rubber components made of EPDM compound for resistance to glycol-based brake fluid
- Made entirely of new materials
- Made to meet rigorous SAE International standards
Quick facts
- Part: Dorman M630793 brake master cylinder
- Fits: 2002-2007 Isuzu NPR and other vehicles
- Material: Cast iron
- Condition: New
A soft or sinking brake pedal, brake fluid leaking at the cylinder or a brake warning light can mean the master cylinder is wearing out. Wheel cylinders, calipers, brake hoses and air in the lines can be behind those signs too, so find the cause before you buy. If the master cylinder is the cause, this one replaces it.
Fits
The vehicles it fits include the 2002-2007 Isuzu NPR, the 2002-2007 Chevrolet W3500 Tiltmaster and the 2002-2007 Chevrolet W4500 Tiltmaster, and it is a direct-fit replacement for each of them. The 2002-2007 Isuzu NPR takes one. Driving a different model or engine? Open the "Vehicles it fits" section and check yours there.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 1.25 in
- Mounting holes: 4
- Number of outlets: 2
- Rearward outlet size: M10 x 1.0
- Secondary outlet thread diameter: 1/2-20
Build and materials
- Material: Cast iron
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One master cylinder and one bleeder kit. The reservoir, cap, push rod, sensor, brake booster, mounting bracket and mounting hardware are not included, so plan on new bolts.
Interchange: 100-3913 · 11-3971 · 130.76010 · 355-47205
97315166 · 8973151660 · MC391472 · F140752 · MC140752
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
100-3913, 11-3971, 130.76010, 355-47205, 97315166, 8973151660, MC391472, F140752, MC140752
Frequently Asked Questions
Does Dorman M630793 work as a 2002-2007 Isuzu NPR master cylinder?
Yes. Dorman M630793 fits the 2002-2007 Isuzu NPR. For another model or engine, open the "Vehicles it fits" section on this page.
Does this Dorman master cylinder come with a reservoir or a cap?
No. The box holds the master cylinder and a bleeder kit. The reservoir, cap, push rod, sensor, brake booster, bracket and mounting hardware are not included.
What bore size and outlet threads does the M630793 master cylinder have?
This master cylinder has a 1.25 in bore, a rearward outlet of M10 x 1.0 and a secondary outlet thread of 1/2-20. It also has two outlets and four mounting holes.
Is the housing on this brake master cylinder made of cast iron?
Yes. The cylinder housing is cast iron, and the rubber components are EPDM compound made to resist glycol-based brake fluid.
Does Dorman M630793 replace the 8973151660 master cylinder?
Yes. 8973151660 is one of the numbers on the Interchange line for Dorman M630793, along with 97315166, MC391472 and several others.
