Dynamic Friction 355-21051 brake master cylinder for the 2011-2015 Kia Optima turns pedal force into hydraulic pressure for the brakes.
A brake pedal that feels soft or sinks toward the floor, or a reservoir that keeps losing fluid, can mean the master cylinder is wearing out. Before you replace it, rule out leaking brake lines, hoses or calipers and air in the system, which can also give a soft pedal.
This master cylinder fits the 2011-2015 Kia Optima. One goes in each 2011-2015 Kia Optima.
Fit and size
Build and materials
One brake master cylinder with its reservoir.
Is this a 2011-2015 Kia Optima brake master cylinder?
Yes. Dynamic Friction 355-21051 is listed for the 2011-2015 Kia Optima.
Does this Dynamic Friction brake master cylinder come with the reservoir?
Yes. The reservoir is included with the master cylinder, so the listing is the cylinder and its reservoir together.
What is the bore size of the 355-21051 master cylinder?
Dynamic Friction 355-21051 has a 7/8 inch bore. That is the size to compare against the cylinder you are replacing.
What brake pedal symptoms can mean a master cylinder is failing?
A soft pedal, a pedal that slowly sinks, or fluid that keeps dropping in the reservoir can mean the cylinder is worn. Have the brakes checked promptly, because a shop can test the system.
Is this master cylinder sold singly for the 2011-2015 Kia Optima?
Yes. Dynamic Friction 355-21051 is one master cylinder, and the 2011-2015 Kia Optima takes one.
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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.
