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Review on Dorman 42039 HELP Master Cylinder by Max Rosengren

Revainrating 4 out of 5

As described good for parts

I bought this cover for my 1989 Mazda RX-7 to bleed the brakes and clutch master cylinders. The cap wasn't exactly the same as the factory one (different seal and mudguard) but it bolted on the brakes and clutch perfectly.

Pros
  • High marks for grip and durability from testers
Cons
  • Not the best