Good info for the forum. Thanks. :thumbsup:

 

Great job...Thanks!!

 

Just wanted to add that the new bolts from the dealer do not come with that washer, which is much thicker than a standard washer. And the washer will not come off of the old bolts. I had to cut them off, drill them out a bit and install on the new bolt.

 

How many of each do you need for the driver side?

 

Quantity per side in (red)

a) 6508219AA (2)
b) 6507746AA (4)
c) 6508220AA (2)

It's the same for either side.

 

How about the exhaust pipe bolt part number that is a bieaaatch to remove. The one with the anti-spin keeper that fails when removing. 2 of them I think.

 

I'm not sure if it's the same for 2000 vs 2004, but in the 04, the bolt part is 6506012AA.

 

could failure of these bolts cause an oil leak?

 

I just did my drivers side manifold on my '04 4.7 H.O last weekend. My four bolts were all the same length and all four studs were the same length. So 4 of each and four nuts for the heat shield fixed mine up. FWIW.

 

Interesting. Which studs were used? And any chance that they had been previously replaced?

I don't see how my heat shield could have fit properly without the combination of the three bolts. I guess it could have been attached with the longer studs on both ends, but it would've been a poor fit.

 

could failure of these bolts cause an oil leak?

Nope.

 

tks.....

 

How long did it take djpeters?

 

How long did it take djpeters?

It actually went exceptionally well. Everything came apart good. It's tight to work on and a 6" long, 6 point box end wrench is a must. My two back studs were broke, one I got out with vise grips before taking the manifold off and the other came out after getting the manifold off. I had the manifold resurfaced ($50), and new gasket and hardware from dealer ($75). In total, taking my time, about 4 hours. Very happy. My Jeep is quiet again!

 

Maybe different model years had different setups. My 01 manifold looks different then the picture on here. When i changed my rear drivers bolt i noticed it had a cut out at the end so you can use it as a guide when reinstalling it. This is a picture i found showing what i am talking about.

 

I just wanted to make a correction about my previous post. I was wrong on saying my studs were all the same. The OP is exactly correct on the sizes. My back two studs were broke and it wasn't until I was cleaning up my bench just now that I held the broken pieces together and went hmmmm....they aren't the same. But, my heat shield still went on fine so I'm going to leave it.

 

Would you suggest Mopar only for the updated exhaust manifold gaskets?

Is so, can someone provide a part number?

 

No part number needed for the updated gasket at the dealer. When I replaced mine they gav me the updated version. Due to mandates if a part number is updated they phase the old gaskets out as it is a liability for them to sell you a part that is now void in their stock. On a side note, rock auto sent me the updated gaskets as well when I ordered what I needed to replace my headgaskets. I'm not sure about the parts stores however as I did not order it from them. I can only attest for the dealer and rockauto.

 

Here's a great thread by billzcat1. Part numbers included.

http://www.jeepforum.com/forum/f310/parts-list-exhaust-manifold-job-4-7-v8-1566476/

 

I just did this project on my 2004 4.7L, and put together this image for people to have as a quick reference. I wanted to also make note that I did not have any washers on my bolts when I disassembled the exhaust manifold and heat shield, but this might have only been on certain years.

 

What is the thread size on the studs?

Anyone know what the thread size is on the head end of the stud? M6?M8? They look to be all the same. From the pictures with the tape measure they look to be 50 mm long under the bolt head.

I am considering using stainless studs and brass nuts on the exhaust. Will never have a problem again with rusty fasteners.

 

Great info here. Appreciate this forum so much.

I had this issue for a couple weeks. Noticed on start up and acceleration that I had the sound of an exhaust leak, or an engine tick. Thought it could have been a spark knock, but then under inspection I realized my manifold heat shield was off in the rear of the engine. Sure enough, both rear bolts had sheared themselves off. So I went to the dealer got the 2 replacement bolts since I didnt want to do the whole job right now, weather sucks.

I was one of the kucky ones. I was able to twist the broken stud out on the bottom with my fingertips. The top I jad to use some very small vice grips to twist it out. But, I was able to complete the entire job without having to remove the manifold or loosen any other bolts. Literally just got the studs out, put in the new bolts and replaced the heat shield. Now it sounds good as old.