Dynamic Friction 355-54243 brake master cylinder for the 2005-2010 Ford F-250 Super Duty and other vehicles turns pedal force into hydraulic pressure for the brakes. A piston in the bore of this Dynamic Friction brake master cylinder pushes brake fluid toward the lines when you press the pedal.
A soft or sinking brake pedal, brake fluid leaking around the master cylinder or a brake warning light can mean the master cylinder is failing. A leaking caliper or brake line, or air in the system, can be behind these signs too, so find the cause before buying.
This brake master cylinder is a direct-fit replacement for the 2005-2010 Ford F-250 Super Duty, the 2007-2010 Ford F-350 Super Duty and the 2006-2010 Ford F-550 Super Duty, among other vehicles.
Fit and size
Build and materials
One brake master cylinder with its reservoir. A truck takes one.
Is this the right 2007-2010 Ford F-350 Super Duty brake master cylinder for my truck?
Yes, Dynamic Friction 355-54243 fits the 2007-2010 Ford F-350 Super Duty, and the 2005-2010 F-250 and 2006-2010 F-550 Super Duty too. If your truck is another year or model, look it up in the "Vehicles it fits" section.
Does the 355-54243 master cylinder come with its reservoir?
Yes. The reservoir is included with this master cylinder, and the listing is for one unit.
What bore size does the 355-54243 brake master cylinder have?
The Dynamic Friction 355-54243 brake master cylinder has a 1 5/16 inch bore.
How can I tell if a brake master cylinder is going bad?
A soft or sinking pedal, fluid leaking around the master cylinder or a brake warning light can be signs. A shop can test the master cylinder to confirm.
Does this listing include a brake booster or brake lines?
No. This listing is one brake master cylinder with its reservoir; a brake booster and brake lines are separate parts.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
