Dorman M39647 brake master cylinder for the 1988-1991 Chevrolet C1500 and other vehicles turns pedal force into hydraulic pressure for the brakes.
- Aluminum cylinder housing constructed to match the casting material of the original part
- Rubber components made of EPDM compound for resistance to glycol-based brake fluid
- Built to meet rigorous SAE International standards
- Made entirely of new materials
- Part of the Dorman First Stop product line
Quick facts
- Part: Dorman M39647 brake master cylinder
- Fits: 1988-1991 Chevrolet C1500 and other vehicles
- Material: Aluminum
- Condition: New
A brake pedal that feels soft or sinks, or brake fluid showing around the cylinder, can mean the master cylinder is wearing out. Before you replace it, rule out leaking brake lines, calipers or wheel cylinders and worn pads, since the pedal can feel low for those reasons too. If the master cylinder is the cause, this one replaces it.
Fits
This master cylinder fits the 1988-1991 Chevrolet C1500 and the 1988-1991 GMC C1500.
Specifications
Fit and size
- Quantity per vehicle: 1
- Bore diameter: 36 mm and 24 mm
- Number of outlets: 2
- Rearward outlet size: 1/2-20
Build and materials
- Material: Aluminum
- Rubber components: EPDM compound
- Condition: New
- Country of origin: China
In the box
One brake master cylinder with its reservoir. This listing holds one, and the vehicle takes one. Mounting hardware and a sensor are not included, so plan on new mounting hardware.
Interchange: 100-4362 · 10-2350 · 130.66038 · 355-47166
18M362 · M900568 · 12713 · MC507840 · 18013975 · 18030604 · 116625 · M2350 · MC39647 · F114172 · F115625 · F116625 · MC115625 · MC116625
This part cross-references / interchanges with the following part numbers:
18M362, M900568, 100-4362, 12713, 10-2350, 130.66038, MC507840, 355-47166, 18013975, 18030604, 116625, M2350, MC39647, F114172, F115625, F116625, MC115625, MC116625
Frequently Asked Questions
Is the Dorman M39647 brake master cylinder right for a 1988-1991 Chevrolet C1500?
Yes. Dorman M39647 fits the 1988-1991 Chevrolet C1500 and the 1988-1991 GMC C1500.
Does the Dorman M39647 master cylinder come with the reservoir?
Yes, the Dorman M39647 includes the reservoir. Mounting hardware and a sensor are not included, so plan on new hardware.
What are the bore diameters on this master cylinder?
The bore diameters are 36 mm and 24 mm. This master cylinder has 2 outlets, and the rearward outlet size is 1/2-20.
Are the rubber parts in this master cylinder resistant to glycol-based brake fluid?
Yes. All rubber components in this master cylinder are made of EPDM compound for resistance to glycol-based brake fluid.
Can a soft or sinking brake pedal mean the master cylinder needs replacing?
Yes, a soft or sinking pedal, or fluid leaking near the cylinder, can mean the master cylinder is worn. Have any brake problem inspected promptly.
