Dorman - First Stop Brake Master Cylinder M390530

Dorman - First Stop Brake Master Cylinder M390530 - view 2

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Dorman - First Stop Brake Master Cylinder P/N:M390530

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$137.99

MPN: M390530

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Dorman - First Stop Brake Master Cylinder P/N:M390530

$137.99

Description

Convert brake pedal effort into the hydraulic pressure that operates the braking system with the Dorman - First Stop Brake Master Cylinder M390530. Precision-engineered to match the design, function, and performance of the original master cylinder, it drops in as a direct-fit replacement for the 2000-2005 Ford Excursion; the 1999-2004 Ford F-250, F-350, F-450, and F-550 Super Duty; and the Ford F-53 Motorhome Chassis in both the 1999-2000 and 2014 model years (all engines).

Aluminum housing: constructed to match the casting material of the original part for similar performance.
Durable EPDM seals: all rubber components use a high-quality EPDM compound for resistance to glycol-based brake fluid.
100% new: made entirely of new materials, not remanufactured, and built to meet rigorous SAE International standards.
Reservoir and sensor included: mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused.

This unit has a 1.375 in bore diameter and three outlets, with a 7/16-24 rearward outlet size and 9/16-18 & 3/8-24 secondary outlet thread diameters. Country of origin: China.

Manufacturer part number M390530.

Manufacturer's Description

Product Specs

Buyer's Guide

Interchange Part Numbers

Frequently Asked Questions

What does the M390530 master cylinder do?

The brake master cylinder converts the force from your brake pedal into hydraulic pressure, sending brake fluid through its outlets to operate the vehicle's brake circuits.

Which vehicles does this fit?

It's a direct-fit replacement for the 2000-2005 Ford Excursion; 1999-2004 Ford F-250, F-350, F-450, and F-550 Super Duty; and the Ford F-53 Motorhome Chassis (1999-2000 and 2014). See the Buyer's Guide tab.

Does it include a reservoir and mounting hardware?

Yes, the reservoir and sensor are included. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.

What are the bore size and outlets?

It has a 1.375 in bore diameter and three outlets, with a 7/16-24 rearward outlet size and 9/16-18 & 3/8-24 secondary outlet thread diameters.

How do I know if my master cylinder is failing?

Signs may include a brake pedal that slowly sinks under steady pressure, a spongy pedal, or internal fluid loss. Diagnose the cause first; if the master cylinder is at fault, this replaces it.