The F-150's Single-Seal Master Cylinder Design is Doomed to Fail
Anyone out there having trouble slowing their truck down? There’s a lawsuit that says a change to the F-150’s master cylinder design is creating a dangerous braking situation.
All 2013-2018 Ford F-150s use master cylinders supplied by Hitachi, with the pistons fitted with just a single cup seal responsible for containing pressurized brake fluid. The lawsuit alleges this is unusual because pistons within master cylinders are usually fitted with two cup seals to ensure that fluid does not leak out of the master cylinders.
These single-seal master cylinders have already been recalled for the 2013 and 2014 model years. But instead of changing the design, Ford replaced the defective part with – I bet you can see where this is going – new defective parts.
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F-150's Single Cup Seal Master Cylinder is Leaking
Ford switched to a single-seal-cup master cylinder design for the 2013 F-150 and it didn’t take long for owners to start complaining about spongy brake pedals and a sudden inability to stop their trucks.
Related Ford Generations
At least one model year in these 2 generations have a relationship to this story.
We track this because a generation is just a group of model years where very little changes from year-to-year. Chances are owners throughout these generation will want to know about this news. Click on a generation for more information.
13th Generation F-150
- Years
- 2015–2020
- Reliability
- 79th out of 94
- PainRank™
- 32.39
- Complaints
- 715