At first it seemed like a good thing. But after about 3 months, there was a leak in the collector on the driver's side. I thought for a long time it was a seal leak and lived with it for several months before I decided to undergo the ordeal of changing the seals. I discovered that it wasn't a gasket at all, but a crack in one of the manifolds. I didn't discover this a few months ago when I examined it visually, but by the time I actually started tearing it apart, the tape I had put around where the tear was and had dissolved exposed the crack itself. Now I'm looking for a replacement set. I was looking at another set of these but since all the other reviews have the same issue I'll probably choose a different manufacturer. Edit: I replaced the cracked driver's side head with one from Dorman and that fixed the issue. But now that it was quiet on the driver's side, I could hear that there was a distinct leak on the passenger side. While not as bad as the driver's side (yet), I just ordered a Dorman replacement for that side as well. I repeat: DO NOT BUY THESE HEADERS! In the long run they will require a lot more work from you than if you had just bought the much cheaper and simpler Dorman heads (674-922 and 674-923 along with two sets of Dorman-03216 screws). And yes, the screws aren't for 5.7, but the ones listed for 5.7 are too long when using those aftermarket Dorman connectors).
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