Confusion about NPP exhaust
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Joined: Apr 2020
Posts: 9
Likes: 1
From: Switzerland
Confusion about NPP exhaust
Hi
So I got a problem figuring out the right NPP exhaust Part Numbers for my Corvette C6 LS3. Looking into the VIN it's an 2008. Now I wanted to fit the NPP Exhaust Option. But to have this street legal in switzerland, the partnumbers on the mufflers need to match the numbers in the "Typengenehmigung". This is a official document that shows which parts belong to the car and which don't. And as the government has gotten pretty strict about exhaust modifications, I can't "just bolt on some other mufflers".
Having looked into the Typengenehmigung Mufflers with the following part numbers are legal:
15140217
25839146
25839148
and
15140218
25839147
25839149
So I found that the numbers ending in 148 and 149 are the NPP Mufflers, but these are only for the 2009 MY. Is there a mistake in the document? Or will these exhaust also fit my 2008? Or were there any "mixed up" corvettes between the Model years?
Thanks in advance
So I got a problem figuring out the right NPP exhaust Part Numbers for my Corvette C6 LS3. Looking into the VIN it's an 2008. Now I wanted to fit the NPP Exhaust Option. But to have this street legal in switzerland, the partnumbers on the mufflers need to match the numbers in the "Typengenehmigung". This is a official document that shows which parts belong to the car and which don't. And as the government has gotten pretty strict about exhaust modifications, I can't "just bolt on some other mufflers".
Having looked into the Typengenehmigung Mufflers with the following part numbers are legal:
15140217
25839146
25839148
and
15140218
25839147
25839149
So I found that the numbers ending in 148 and 149 are the NPP Mufflers, but these are only for the 2009 MY. Is there a mistake in the document? Or will these exhaust also fit my 2008? Or were there any "mixed up" corvettes between the Model years?
Thanks in advance
Melting Slicks
Joined: Feb 2017
Posts: 3,293
Likes: 1,283
From: Phoenix, AZ to Quakertown, PA.
C6 of Year Finalist (appearance mods) 2019
I just replaced my 09 npp mufflers, here is a photo of left and right side with part numbers. If I recall the 08’s have a different length passenger side over the axle pipe.
