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Dorman - First Stop Brake Master Cylinder P/N:M39638
$83.99
Turn firm brake-pedal pressure into the hydraulic force that operates your brakes with the Dorman - First Stop Brake Master Cylinder M39638. It drops in as a direct-fit replacement for the 1987-1993 Dodge Dakota [All], reproducing the design, function, and performance of the factory master cylinder so the hydraulic system works as intended.
- Cast-iron housing: built to match the casting material of the original part for similar performance.
- 100% new: made entirely of new materials, not remanufactured.
- EPDM rubber components: resist glycol-based brake fluid.
- Built to spec: 24 mm bore, two outlets (rearward outlet 1/2-20, secondary outlet thread 9/16-20), an included reservoir, and made to SAE International standards.
A master cylinder that loses internal seals can let the pedal sink, feel spongy, or bleed off pressure; if the original master cylinder is the cause, this unit replaces it. Sensor and mounting hardware are not included — consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 18M356 · 783-40010 · 78340010 · 83-40010 · 8340010 · M900562 · 100-2665 · 1002665 · M-87010 · M87010 · 12396 · 12837 · 13-2393 · 132393 · 10-2393 · 102393 · 130.67010 · 131.67010 · 4294311 · 4294312 · 4294721 · 4897208AA · MC114497 · 355-40055 · 35540055 · M2115 · NM2115 · 2539638 · MC39638 · F114496 · F114497 · F128340 · MC114496 · Manufacturer part number M39638
This part cross-references / interchanges with the following part numbers:
18M356, 783-40010, 83-40010, M900562, 100-2665, M-87010, 12396, 12837, 13-2393, 10-2393, 130.67010, 131.67010, 4294311, 4294312, 4294721, 4897208AA, MC114497, 355-40055, M2115, NM2115, 2539638, MC39638, F114496, F114497, F128340, MC114496
Frequently Asked Questions
What does this master cylinder do?
It converts the force from your brake pedal into hydraulic pressure that is sent through the two outlets to operate the brake system.
What vehicles does the M39638 fit?
It is a direct-fit replacement for the 1987-1993 Dodge Dakota [All]. Check the Buyer's Guide tab to confirm it matches your vehicle.
Is a reservoir included?
Yes. This master cylinder includes a reservoir. A sensor and mounting hardware are not included.
What is the master cylinder made of?
The cylinder housing is cast iron, built to match the casting material of the original part, and all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
What are the bore and outlet specifications?
It has a 24 mm bore and two outlets: a rearward outlet sized 1/2-20 and a secondary outlet with a 9/16-20 thread diameter.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M39638
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