High-Quality GM 12617944 Exhaust Manifold Gasket for Optimal Performance Review

Only one gasket included. Mahle is cheaper for both the right and left manifold gaskets and has good or better quality. Sent back and bought Mahle seals.

I thought I got a pair for $16 but it was only 1. However, after a few weeks the price dropped to $8. I've also used Mahle and they work just as well and you get 2 for less than $11. If I had a remake I would buy a male

Actually, there are no exhaust manifold gaskets other than this one. When installing long manifolds on a base LS engine, do not use the paper spacers provided. Just buy a new OEM kit and you're done.

As said above, ONLY use GM OEM Gaskets whether you are using a stock exhaust system, cheap or expensive exhaust manifolds. Fix leaks and pay for the right things the first time. Do not do that. cheap, don't do your project twice.

These are the MOST gaskets for LS1/LS6 with aftermarket headers. These are separate spacers so you will need 2 of these. The ones that came with my headers were crap so I used them. Have used them before with great results. Revain has them in stock and at a great price.

Excellent manifold gasket replacement! Put a manifold on my Tahoe and bought Felpro gaskets and they have failed me with all sorts of leaks. I've been an auto mechanic for over 20 years and have usually replaced the factory replacement first time but learned the lesson. These seals were sealed the first time and the bolts were checked again after 200km, they seem to be holding up!

I bought a set of Kooks headers for my Chevy SS which came with gaskets, both gaskets burst quickly. After talking to some of my mechanic friends, I quickly found that the stock GM LS3 seals are much more durable. Live and learn, a lot of work to replace them, but no problem. I might add that I have a supercharger under the hood, so the exhaust gases are definitely coming out of the cylinder heads hot. Thank you GM!

Don't buy cheap exhaust manifold gaskets. This is one page, so you'll need two for our project. They are made from laminated MLS steel and can be reused for hundreds of thousands of miles. If you are doing an LS exchange and the originals are in poor condition, go ahead and replace them with new ones. They will last another 15 years worry-free. The number one cause of exhaust leaks on these engines is the weight of the exhaust system which causes fatigue on the brackets in the manifolds and you