This gasket is well made and definitely worth the money for a leak proof guarantee. The distributor is installed by two people. We used this gasket in place of the one that came with the replacement header. I'm glad we spent the money on both. None of us would want to do this assembly job again. There is very little wiggle room to maneuver parts. We used it on our 1997 Jeep Wrangler. Fits perfectly and is going strong after many months of exploring the Rocky Mountains.