Dorman - First Stop Brake Master Cylinder M39317
Dorman - First Stop Brake Master Cylinder M39317 - view 2
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Dorman - First Stop Brake Master Cylinder M39317
Dorman - First Stop Brake Master Cylinder M39317 - view 2
Dorman - First Stop Brake Master Cylinder M39317 - view 3
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Dorman - First Stop Brake Master Cylinder P/N:M39317

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$149.99
MPN: M39317
Item Package Quantity: 1
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Dorman - First Stop Brake Master Cylinder P/N:M39317
Dorman - First Stop Brake Master Cylinder P/N:M39317
$149.99

Turn brake-pedal effort into the hydraulic pressure that pushes fluid to each brake circuit with the Dorman – First Stop Brake Master Cylinder M39317. It drops in as a direct-fit replacement for the 1980-1982 Nissan 720 (All), and because it's precision-built to the design, function, and performance of the original master cylinder, it slots into the listed applications without modification.

  • 100% new: made entirely of new materials, not remanufactured.
  • Aluminum housing: constructed to match the casting material of the original part for similar performance.
  • Durable seals: rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
  • Specs: two outlets, 0.875 in bore diameter, and M10 x 1.0 outlet threads; made to meet SAE International standards.

Includes the reservoir. A sensor is not included, and mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused. If a worn or leaking master cylinder is the cause of a sinking or spongy brake pedal, this unit replaces it. Country of origin: Taiwan.

Interchange: 18M165 · 83-04304 · 8304304 · 83-04306 · 8304306 · M900365 · 100-1408 · 1001408 · M-51306 · M51306 · 11937 · 13-1937 · 131937 · 11-1937 · 111937 · 130.42306 · 13042306 · MC506860 · 355-67035 · 35567035 · M51869 · M51937 · 4601013W10 · 4601048W00 · MC39317 · F105252 · MC105252 · Manufacturer part number M39317.

This part cross-references / interchanges with the following part numbers:

18M165, 83-04304, 83-04306, M900365, 100-1408, M-51306, 11937, 13-1937, 11-1937, 130.42306, MC506860, 355-67035, M51869, M51937, 4601013W10, 4601048W00, MC39317, F105252, MC105252

Frequently Asked Questions

What does this brake master cylinder do?

It converts the force from your brake pedal into hydraulic pressure that pushes brake fluid to the brake circuits, applying the brakes.

What vehicle does the M39317 fit?

It is a direct-fit replacement for the 1980-1982 Nissan 720 (All). Check the Buyer's Guide tab to confirm the fit for your vehicle.

Does it include a reservoir, sensor, or mounting hardware?

The reservoir is included. A sensor is not included, and mounting hardware is not included.

What are signs the master cylinder may need replacing?

Signs may include a brake pedal that slowly sinks or feels spongy, or fluid leaking at the cylinder. Diagnose the cause before replacing, as other parts can produce these symptoms.

What are the bore and outlet specs?

It has a 0.875 in bore diameter, two outlets, and M10 x 1.0 outlet threads, and is made to meet SAE International standards.

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