chily2008

I recently purchased a set of used mufflers from someone on ebay. The mufflers that I received are slightly different. Can anybody help me with these parts numbers- one of the mufflers have the part number 996-111-122-57 and the other has the number 996-111-121-91. I can not find any confirmation but I thought that the ***-57 was for a 3.4l and the ***-91 was for 3.6l.

Thanks

1999Porsche911

55 is for the 99 and 57 is for 3.6L. They are all interchangable except for the mounting bracket. Simply remove the bracket from your 99 mufflers and attach them to the 3.6 ones.

DFC

Try the following link for parts:

http://www.pelicanparts.com/PartsLoo...SA_KATALOG.htm

The -57 looks liks a 3.4L muffler for a 00-01, no idea on the other.