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Dorman - First Stop Brake Master Cylinder P/N:M390445
$123.99
The brake master cylinder converts the force from your brake pedal into the hydraulic pressure that operates the braking system, and the Dorman - First Stop Brake Master Cylinder M390445 drops in as a direct-fit replacement for the 1997-2004 Ford Crown Victoria, the 1997-2000 and 2003-2007 Lincoln Town Car, and the 1997-2007 Mercury Grand Marquis (all engines). It is precision-engineered to reproduce the design, function, and performance of the original master cylinder on these listed applications.
- 100% new: made entirely of new materials rather than remanufactured, and built to meet SAE International standards.
- Aluminum housing: the cylinder housing is constructed to match the casting material of the original part for similar performance.
- EPDM rubber components: the rubber parts use a high-quality EPDM compound for resistance to glycol-based brake fluid.
- Specs: 1-inch bore, two outlets (M10 x 1.0 rearward and secondary threads, 1 mm primary outlet thread pitch), with the reservoir and sensor included.
Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused. Country of origin: China.
Interchange: 18M850 · 83-34095 · 8334095 · 83-34098 · 8334098 · M901076 · 100-2166 · 1002166 · M-81095 · M81095 · 13473 · 13-2747 · 132747 · 10-2747 · 102747 · 130.61095 · 131.61095 · MC252120 · 355-56014 · 35556014 · F7AZ2140AA · M3056 · NM3056 · BRMC-71 · BRMC71 · MC390445 · F140128 · MC140128
Manufacturer part number M390445
This part cross-references / interchanges with the following part numbers:
18M850, 83-34095, 83-34098, M901076, 100-2166, M-81095, 13473, 13-2747, 10-2747, 130.61095, 131.61095, MC252120, 355-56014, F7AZ2140AA, M3056, NM3056, BRMC-71, MC390445, F140128, MC140128
Frequently Asked Questions
What vehicles does the M390445 fit?
It's a direct-fit replacement for the 1997-2004 Ford Crown Victoria, the 1997-2000 and 2003-2007 Lincoln Town Car, and the 1997-2007 Mercury Grand Marquis (all engines). Check the Buyer's Guide tab to confirm your vehicle.
Does it include a reservoir and sensor?
Yes. Per the catalog, the reservoir and sensor are included. Mounting hardware is not included—consult your vehicle service information for the correct fasteners and whether they may be reused.
What is the bore size and outlet configuration?
It has a 1-inch bore and two outlets. The rearward and secondary outlet threads are M10 x 1.0, with a 1 mm primary outlet thread pitch.
Is this a remanufactured unit?
No. It's 100% new, made entirely of new materials rather than remanufactured, and made to meet rigorous SAE International standards.
What are signs my master cylinder may need replacing?
A sinking or spongy brake pedal, brake fluid leaks, or a lit brake warning light may indicate a failing master cylinder. Diagnose the cause before replacing, since these signs can have other sources.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M390445
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