Having difficulty determining P/N of 2010 Mopar 5.7 exhaust - Jeep Commander Forums: Jeep Commander Forum
Exhaust Questions or advice about exhaust systems? This is the place...

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post #1 of 19 (permalink) Old 12-11-2010, 10:38 AM Thread Starter
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Having difficulty determining P/N of 2010 Mopar 5.7 exhaust

So, I am looking to upgrade the OEM exhaust on my 2010 5.7L Hemi XK.

All I can find is a cat back for the 2007-2008 (Mopar part number P5153589). I called a Jeep Parts counter and they do not see one listed for the 2009-10. My guess is they are the same still, but how do I make sure?

Maybe I can compare OEM P/N's for all model year Commanders with Hemi engines... and if they are the same the performance cat back dimensions would be the same. Then the only concern is --- did back pressure change for some reason that affected the design for '09 - '10 ?!?

Oh --- the WK and XK have different part numbers! How weird is that? WK uses Mopar P/N P5153364. Crazy stuff.

Any help is appreciated.

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4XGuard Front Guard, Matrix & KC driving lights
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Magnaflow exhaust
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Last edited by Chuck1026; 12-12-2010 at 11:43 AM.
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post #2 of 19 (permalink) Old 12-11-2010, 12:13 PM
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This might be the reason:

Chrysler has made various revisions to the 5.7 L for the 2009 model year. The first for all applications is what Chrysler calls Variable Camshaft Timing or VCT. VCT (Essentially Variable Valve Timing) uses an oil control valve which controls oil flow to a unique camshaft sprocket which contains a phasing device, which depending on the operation of the oil control valve either advances or retards camshaft timing.

Cylinder heads have been revised to increase flow. Though the intake manifold has also been changed on all applications, it is however model specific. Dodge Ram, non-Hybrid Electric Vehicle (HEV) Chrysler Aspens, and non-HEV Dodge Durango utilize an active intake manifold with a short runner valve to optimize torque and horsepower. At lower engine RPM the valve is closed, resulting in improved low-end torque from the longer runners. At higher engine RPM the valve is opened, diverting the incoming air into the center of the manifold. The shorter runners results in improved horsepower. Passenger cars, Jeep vehicles, and HEV Chrysler Aspen & HEV Dodge Durango do not use this manifold, these vehicles utilize a passive intake manifold, which does not have a short runner valve.

I purchased a Mopar cat back exhaust for a 2006 Durango. It was actually a Borla unit, so look up Borla and see if they make one for the 2009/10, and see if it is the same one for 2006/08. Also, the last time I looked, I do know that Borla only makes one for the Hemi, and not the 4.7
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post #3 of 19 (permalink) Old 12-11-2010, 03:22 PM
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Quote:
Originally Posted by Chuck1026 View Post
Oh --- the WK and XK have different part numbers! How weird is that? WK uses Mopar P/N P5153364. Crazy stuff.
.
That makes sense, the WK and XK are not same in total body length and thus the total exhaust length

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


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2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #4 of 19 (permalink) Old 12-11-2010, 08:28 PM Thread Starter
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Quote:
Originally Posted by Ahmed View Post
That makes sense, the WK and XK are not same in total body length and thus the total exhaust length
Ah, I forgot about that important point! Thanks .

I see Magnaflow says their design is valid for the entire production run of XK up through 2010, so I want to believe the Mopar (by Borla?) Performance Cat Back will fit the 2010 too --- even though they stop at 2008 in the listing.

I sent an e-mail to Borla to ask too... I hope somebody already knows on here and shares what they learned.

Chuck

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2010 Commander Sport
Black Crystal Pearl, Hemi and QT-II
Delivered on April 2, 2010


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Mods:
RC 2" lift & 245/75/17 tires
4XGuard Front Guard, Matrix & KC driving lights
Mopar rear recovery hook, skids & rear grab bars, rubber mud guards & hood guard
Headrest 7" DVD/LCD monitors & Lock Pick
OEM remote start
Magnaflow exhaust
AEM intake
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post #5 of 19 (permalink) Old 12-12-2010, 12:28 AM
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Join Date: Dec 2007
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Quote:
Originally Posted by Chuck1026 View Post
I see Magnaflow says their design is valid for the entire production run of XK up through 2010, so I want to believe the Mopar (by Borla?) Performance Cat Back will fit the 2010 too --- even though they stop at 2008 in the listing.

I sent an e-mail to Borla to ask too... I hope somebody already knows on here and shares what they learned.
I think they will answer positivity that exiting cat back fits 2009 and 2010 ,, the difference is mainly inside the engine. ... this is not a confirmation but anticipation,, lets see what they come back with

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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post #6 of 19 (permalink) Old 12-12-2010, 09:23 AM
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You should be fine

I had a similar issue. Wanted a catback on my 2010 Hemi. Really liked the Gibson due to full 3 inch system. They don't list it as fitting 2010.
Took a chance and ordered it. Fits perfect. Only difference between instructions and my install was having to cut the old exhaust off behind the muffler to remove it instead of a bolt-on connection there.
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post #7 of 19 (permalink) Old 12-13-2010, 06:27 PM Thread Starter
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Quote:
Originally Posted by Ahmed View Post
I think they will answer positivity that exiting cat back fits 2009 and 2010 ,, the difference is mainly inside the engine. ... this is not a confirmation but anticipation,, lets see what they come back with
Well... I am suprised. See conversation below...

I first wrote:

I have a 2010 Jeep Commander with the 5.7L Hemi engine. I believe Borla may manufacture the Mopar Performance cat back exhaust for the Jeep Commander.

There is no part number for the 2010 Commander via Borla or Mopar. I assume that nothing has changed in the design of the exhaust dimensionally between model years, but any help confirming this (or denying this) would be appreciated!

Reply from Borla:

Chuck:

Thank you for your interest in Borla products. Unfortunately we do not offer a system for your 2010 Jeep Commander. We can get you situated with universal mufflers. If you are interested, we need to know the following about your Jeep:

What size is the inlet and outlet pipe diameter

What is the configuration of the inlet and outlet pipe

What size is your current muffler

Once we get this information, we can recommend universal mufflers for your Jeep.

I responded:

Weird… Magnaflow uses the same part number for the entire production run of Commander. What you say makes no sense… are you really sure?

Then response from Borla:

We have not done any fitments on any Commanders after 2006.

I replied:

Since the exhaust design seems to be the same for the entire run, I think it is safe to assume the 2006 design will fit --- here is something odd, Borla (supposedly) makes the Mopar exhaust for the Commander and they list up through 2008. I think you can understand my confusion.


So far no additional response back. WTF?!? I didn't think I asked a trick question.

See my Garage at:

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2010 Commander Sport
Black Crystal Pearl, Hemi and QT-II
Delivered on April 2, 2010


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Mods:
RC 2" lift & 245/75/17 tires
4XGuard Front Guard, Matrix & KC driving lights
Mopar rear recovery hook, skids & rear grab bars, rubber mud guards & hood guard
Headrest 7" DVD/LCD monitors & Lock Pick
OEM remote start
Magnaflow exhaust
AEM intake
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post #8 of 19 (permalink) Old 12-14-2010, 07:15 PM Thread Starter
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I received a follow-up from Borla stating, "The systems we make for MOPAR, GM, and Ford are through our OEM line. This is a different division then the aftermarket. They have their own part numbers and applications. In the aftermarket, which I’m in, we do not show a fitment for the Commander."

Wild, huh?!?

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2010 Commander Sport
Black Crystal Pearl, Hemi and QT-II
Delivered on April 2, 2010


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Mods:
RC 2" lift & 245/75/17 tires
4XGuard Front Guard, Matrix & KC driving lights
Mopar rear recovery hook, skids & rear grab bars, rubber mud guards & hood guard
Headrest 7" DVD/LCD monitors & Lock Pick
OEM remote start
Magnaflow exhaust
AEM intake
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post #9 of 19 (permalink) Old 12-14-2010, 08:05 PM
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I just thought of this - I have a 2009 Jeep Commander Accessories catalog. There are two items on the back page - Katzkin Leather Seats and Mopar Cat-Back Exhaust System! I got the catalog to use as a reference if I ever decided to recover my seats. I've never seen the 2010 version. I do know that they only offered the cat-back system for the 5.7, never the 4.7. So, if it was available for 2009, it should fit yours. Since you said it wasn't listed for the 2009 and 2010, I thought it might have something to do with back pressure with VVT. Obviously this is not the case if it was offered in 2009. Go back to the dealer and see if they have a 2009 or 2010 accessory catalog, and have them look it up again. I'm sorry I didn't think of this sooner.
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post #10 of 19 (permalink) Old 12-15-2010, 01:19 AM
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Chuck1026 ,, unfortunately I think you got stuck with a sales person who doesn't know anything and follow the book.

I suggest to go to the dealer and compare the part #s for stock setup of 2006 and 2010 ,, if they are the same .. then you can go ahead with the 2006 one and install it.

if they part # is different ask them to bring the items with different numbers and check the difference yourself.

Second Jeep Commander, Current
2007 XH (International model), Green Metallic, Ltd, 5.7L HEMI, Quadra-Drive II
Spidertax 1.5" wheel spacer, K&N replacement filter
OME 2" Lift kit


First Jeep Commander,
2007 XH (International model), Light Graystone Pearl, Sport , 4.7L Quadra-Trac II.





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