sonicsix

Contrary to what the APN web site description says about the header, it will not fit a 99 without modification. The intake manifold hits on the #1 and #6 tubes of the header preventing the intake from seating properly. I called APN customer service and explained that I had already installed it (took me 4 hours) and that it didn't fit properly and what the issue was. They agreed to send me a return shipping label and a full refund even though the header and gasket had been mounted and unmounted. I commend them for that.

I ended up getting a Dorman exhaust manifold from Autozone as I had to have my Jeep running again ASAP. So if any of you have a 99 and are wondering about this header, the answer is no. Unless you are willing to modify either or both of the manifolds.

http://www.ineedparts.com/auto-parts...-manifold.html

http://www.autozone.com/autozone/par...4821_311407_0_

Here are some pics that I snapped during the job. My OEM exhaust manifold had 2 cracks in it.

BotakBeng

Thx for the reviews and pics.

Just wondering if yours is a late 99?

zr2toxj

Thanks for posting this. I've got a 99 and was getting ready to order an APN.

99FreshenedCherokee

thats crazy, i got one and it fit on mine????

99FreshenedCherokee

check it out man.
https://www.cherokeeforum.com/f59/i-...d-wrap-102319/

jebmccall

thats odd, on my 99 it fit just fine, no issues.

BotakBeng

It prob fit early but not late 99....i'm just guessing

99FreshenedCherokee

early,late, its the same thing.IMHO I think it was user error.I might be wrong, you never know one of the po's coulda done an engine swap with a pre 91 head.(which I highly doubt)

1991Jeep_Man

I thought 1999 was the switch year for the intakes, and they did so mid year. I'm pretty sure it was. That's why in my write-up I mentioned that it may or may not fit a 99. However, to the OP, many people with the different manifolds have gotten the APN to fit with a slight amount of grinding.

99FreshenedCherokee

Are your reffering to the late 99's that supposedly have coil packs and a 0331 head?I personally in all the time being on here have never seen a 99 with coil packs,ever.I can be wrong, but I doubt it.

1991Jeep_Man

Yeah. I could have sworn late 99 was the changeover, but I very well could be wrong. Because many after market parts (including APN, so they may also be wrong) have intake/ igniton parts that go up through 99.

BrofessorXJ

I have a 96 and run the rounded style upgraded 99+ Intake Manifold with the APN header and it works great. All you have to do is some minimal grinding with an angle grinder on the underside of the 6th runner and it will fit fine. Just grind a bit and try and fit it and repeat until it does. Very pleased with my APN for $150.

Otherwise you could pick up one made specifically for the 99+ and pay double or more. Best of luck.

sonicsix

OP here... the date of manufacture for my Jeep is 11/98. The header and intake were installed correctly so that was not the issue. I should have taken some pics of the header after I removed it to show the indentations put into it when torqueing the intake manifold. The intake pressed into the header on the #1 and #6 tubes, more so on the #6.

Anyway, apparently not all 99s are identical if this header fit on some but not others. If you have a 99 and want this header, go ahead and try it but at least be aware that you "may" have to modify your manifolds to make it fit.

I ended up paying $189 for a Dorman exhaust manifold since I could not wait to have another one shipped. It works for me and it has the flex points on it plus I had a flex coupler added to the down pipe. I did not wish to do any grinding or bending to make it fit, which is why I went with another brand. That's just me, though...

99FreshenedCherokee

I see you own a late 99, unless you have a coil packs and a 0331 head, it should have fit.In my haynes manual only 3 different bolt patterns come out when doing a header swap. renix,pre99, and 2000-2001 with the double manifolds.all pre-99 engines should fit that manifold.so again unless you have a renix, or coil packs(which i see you dont) Im calling it user error.
edit:actually you own an early 99, real early, so the coil pack and 0331 head dont even apply to you.

sonicsix

Had you been here during the install, then and only then could you call user error. Otherwise, you're just blowing smoke.