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Dorman - First Stop Brake Master Cylinder P/N:M12578
$110.99
Turn brake-pedal effort into reliable stopping hydraulics with the Dorman - First Stop Brake Master Cylinder M12578 — a direct-fit replacement for the 1993-1998 Mercury Villager and 1993-1998 Nissan Quest. The master cylinder is the hydraulic heart of the brake system: it converts the force from your brake pedal into hydraulic pressure that pushes brake fluid through the lines to the wheel brakes.
- Core job: converts brake-pedal force into hydraulic pressure, sending brake fluid through the lines to operate the brakes at each wheel.
- Signs this part may need replacing: a pedal that slowly sinks to the floor, a spongy or fading pedal, or brake fluid seeping at the cylinder — have the cause diagnosed, since these symptoms can also come from other brake components.
- Application: engineered to install on the 1993-1998 Mercury Villager and 1993-1998 Nissan Quest.
If a failed master cylinder is the cause of your low or spongy pedal, this M12578 replaces it. Bleed the brake system and use the brake fluid specified for your vehicle after installation.
Interchange: 18M630 · 83-34055 · 8334055 · M900840 · 100-2126 · 1002126 · M-81055 · M81055 · 072-8919 · 0728919 · 12578 · 13-2659 · 132659 · 10-2659 · 102659 · 130.61055 · MC251980 · 355-67119 · 35567119 · F3XY2140A · M2659 · NM2659 · 460100B000 · 460100B002 · MC390116 · F128256 · MC128256 · Manufacturer part number M12578
This part cross-references / interchanges with the following part numbers:
18M630, 83-34055, M900840, 100-2126, M-81055, 072-8919, 12578, 13-2659, 10-2659, 130.61055, MC251980, 355-67119, F3XY2140A, M2659, NM2659, 460100B000, 460100B002, MC390116, F128256, MC128256
Frequently Asked Questions
What does this brake master cylinder do?
It converts the force from your brake pedal into hydraulic pressure, pushing brake fluid through the lines to operate the brakes at each wheel.
Which vehicles does the M12578 fit?
It's a direct-fit replacement for the 1993-1998 Mercury Villager and 1993-1998 Nissan Quest. Check the Buyer's Guide tab to confirm it matches your vehicle.
What are the signs of a failing master cylinder?
Common signs include a pedal that slowly sinks to the floor, a soft or spongy pedal, or brake fluid leaking at the cylinder. Have the cause diagnosed, as these symptoms can have other causes.
Do I need to bleed the brakes after installing it?
Yes — bleed the brake system after installation and use the brake fluid specified in your vehicle's service information.
What other part numbers does this replace?
Interchanges include 18M630, 83-34055, M900840, 100-2126, M-81055, 072-8919, 13-2659, 10-2659, MC251980, F3XY2140A and more; see the full Interchange list above.
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Dorman
Dorman - First Stop Brake Master Cylinder P/N:M12578
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