Valve Stem Seals: Fel-Pro Vs. OEM

[hazards280]

Im doing my VSS's soon and am wondering what seal has held to the test of time better? What is your opinion.

If you can just vote that is good too!

[Tackhammer]

The oem's are Viton on the exhaust side and Nitrile on the intake.
I believe felpro's are viton all around
Viton is better, verify what you buy are viton and you will be goo to go

[SilverJester]

Never changed my VSS, but in general I don't have any problems with felpro gaskets.

[Austin@STM]

I know my OEM ones have 76,000+ miles on them and dont smoke one bit. Knowing a lot of the history of my car its seen a lot of racing, and abuse. For the most part OEM is the way to go, they were designed to last. Not saying the fel-pro ones wont work, but i dont know if anyone has had a set in there car for 18+ years yet...

-Austin@STM

[KeithMac]

My Genuine ones have been in for 20 years, still going strong!.

[AdamVR4]

I'm not sure if the felpro seals are the ones you can get from Autozone, but from what little experience I have with the autozone VSS, they fit around the valve stems LOOSER than OEM does (based purely on feel). I've always recommended OEM.

[Irocurstang]

your not going to be wrong with OEM but then again iv never had any problems with fel-pro. I used fel-pro gasket kit with my Iroc-z and no problems even and its used and abused daily.

[RealMcCoy]

Many aftermarket seals are crap, but I would have no problem with Fel-Pro. Their viton valve seal quality is one of their best selling points.