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Review on πŸ› οΈ COMP Cams 503-16 PTFE Valve Seals for .530" Guide Size, 11/32" Valve Stem - Set of 16 by Karoly Reddick

Revainrating 5 out of 5

Not a good experience.

Bad experience with it. I installed but most broke. I tried wearing the size 3/8 but still ate oil. This was on a 327 engine that was meant to fit.

Pros
  • One year trial
Cons
  • No