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Dorman - First Stop Brake Master Cylinder P/N:M390309
$114.99
Restore firm, dependable pedal pressure with the Dorman - First Stop Brake Master Cylinder (MPN M390309). It fits as a direct-fit replacement for the 1996-1998 Ford Mustang, taking the place of a worn or leaking original so your brake system can build hydraulic pressure the way it should.
- Core hydraulic job: converts the force you apply at the brake pedal into hydraulic pressure and sends it through the brake lines to operate the wheel-end components.
- Direct-fit replacement: built to serve as a replacement for the listed Ford Mustang application.
- Signs it may need replacing: a pedal that slowly sinks under steady foot pressure, a spongy or fading pedal, or fluid loss with no visible external leak can be signs the master cylinder is failing. Diagnose the cause before replacing, since these symptoms can have other sources.
If a failed master cylinder is the cause of your soft or sinking pedal, this unit replaces it. Bench-bleed the cylinder before installation and bleed the full system afterward per the vehicle service procedure.
Interchange: 83-34076 · 8334076 · M900987 · 100-3769 · 1003769 · M-81076 · M81076 · 13165 · 13-2761 · 132761 · 10-2761 · 102761 · 130.61076 · 13061076 · MC503800 · 355-54055 · 35554055 · F6ZZ2140BB · F8ZZ2140BA · M2761 · NM2761 · MC390309 · F131890 · MC131890
Manufacturer part number M390309
This part cross-references / interchanges with the following part numbers:
83-34076, M900987, 100-3769, M-81076, 13165, 13-2761, 10-2761, 130.61076, MC503800, 355-54055, F6ZZ2140BB, F8ZZ2140BA, M2761, NM2761, MC390309, F131890, MC131890
Frequently Asked Questions
What vehicle does this master cylinder fit?
It is a direct-fit replacement for the 1996-1998 Ford Mustang. Check the Buyer's Guide tab to confirm it matches your specific vehicle.
What does a brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure and sends that pressure through the brake lines to operate the wheel-end braking components.
How do I know if my master cylinder is failing?
A pedal that slowly sinks under steady pressure, a spongy or fading pedal, or fluid loss without a visible external leak can be signs. Diagnose the cause first, as these symptoms have other possible sources.
Do I need to bleed it before installing?
Yes. Bench-bleed the master cylinder before installation, then bleed the full brake system afterward following the vehicle service procedure for proper pedal feel.
What is the manufacturer part number?
The manufacturer part number is M390309. It also cross-references numbers such as M2761, MC503800, F6ZZ2140BB, and F8ZZ2140BA, listed in full on the product page.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M390309
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