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Dorman - First Stop Brake Master Cylinder P/N:M39406
$157.99
Turn brake-pedal effort into the hydraulic pressure your brakes rely on with the Dorman - First Stop Brake Master Cylinder M39406. It installs as a direct-fit replacement for the 1982-1983 Nissan Sentra and 1983-1984 Nissan Pulsar NX, stepping in for a worn or leaking original.
The master cylinder is the heart of the hydraulic brake system: when you press the pedal it forces fluid through the brake lines to the wheel brakes, and its internal seals hold that pressure so the pedal stays firm.
- Core function: Converts pedal force into hydraulic pressure for the brake circuits.
- Direct-fit replacement: Made to install on the listed Nissan applications.
- Signs it may need replacing: A pedal that slowly sinks, a spongy or low pedal, or fluid seeping at the cylinder — if a failed master cylinder is the cause, this replaces it.
- Installation note: Bench-bleed the unit before fitting and use the brake fluid type specified in your vehicle's service information.
Interchange: 18M212 · 783-04203 · 78304203 · 783-08503 · 78308503 · 83-04203 · 8304203 · M900412 · 100-1388 · 1001388 · M-51203 · M51203 · 072-8236 · 0728236 · 11918 · 13-1618 · 131618 · 11-1618 · 111618 · 130.42203 · MC507120 · 355-67011 · 35567011 · M51618 · NM51618 · 4601001A00 · 4601001A05 · 4601003A00 · MC39406 · F107356 · F900027 · MC107356
Manufacturer part number M39406
This part cross-references / interchanges with the following part numbers:
18M212, 783-04203, 783-08503, 83-04203, M900412, 100-1388, M-51203, 072-8236, 11918, 13-1618, 11-1618, 130.42203, MC507120, 355-67011, M51618, NM51618, 4601001A00, 4601001A05, 4601003A00, MC39406, F107356, F900027, MC107356
Frequently Asked Questions
What does the Brake Master Cylinder M39406 do?
It converts brake-pedal force into hydraulic pressure and sends it through the lines to the wheel brakes; its internal seals hold that pressure so the pedal stays firm.
Which vehicles does it fit?
It's a direct-fit replacement for the 1982-1983 Nissan Sentra and 1983-1984 Nissan Pulsar NX. Check the Buyer's Guide tab to confirm it matches your vehicle.
What are signs my master cylinder may need replacing?
A pedal that slowly sinks under steady pressure, a spongy or low pedal, or brake fluid leaking at the cylinder. Diagnose the cause first, since other parts can produce similar symptoms.
Should I bench-bleed it before installation?
Yes — bench-bleeding the master cylinder before installing helps purge trapped air for a firmer pedal. Follow your vehicle's service procedure.
What brake fluid should I use?
Use the brake fluid type specified in your vehicle's service information.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M39406
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