OEM quality. I just finished installing this kit and within a month they are leaking. The fillings are not to blame. People are having trouble getting it to work the first time they install it. I think even the smallest debris will cause them to fail. I'm mechanical and need to do this again. The CV axis needs to be flawless to get a good seal deal. Haven't installed a new set yet, just an informative review. good pressure Fits perfectly. Just take your time installing it. On a 2006 Chevrolet Colorado 4x4.
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