TwinTurbo.NET: Nissan 300ZX forum - OEM Valve stem seals or Aftermarket?
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Subject OEM Valve stem seals or Aftermarket?
     
Posted by nonstopna on November 08, 2017 at 2:41 PM
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Message Anybody have any experience with the Supertech Viton Valve Stem Seals compared to OEM. There is a big difference in price but my biggest concern is... are they really better than OEM? I noticed IPP uses OEM on their engine package deals or they say they do but when you go and look at their aftermarket valve stem seals they sell, they also say they use the aftermarket ones. I'm all for the "They are made of better material" but will they really last and perform like they are suppose to? I also came across this video and if you skip to 9:10 . https://www.youtube.com/watch?v=zFmC66YU6zI They tell you not to use aftermarket (blue bullshit)seals. I know its not a Z but suppliers likely use the same stuff to make all seals.

     
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