SM Head Install... forgetting anything?

RustyRatRod said

Indeed. So far, I've found Remflex the best. Unfortunately, they are not reusable. I guess you caint have it all. lol

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My driver side header always leaked shortly after replacement. The header is probably not flat. I put a remflex in about 6 years ago and it's still holding. Be careful when handling and installing as they are fragile.