Hello all, I have a quick question regarding my factory 2008 OEM 350z catalytic converters, headers and y-pipe..will these 2008 exhaust parts fit on a 2004 350z?? Any help in answering this would be greatly appreciated.

 

Yes it will all fit. One important part is de headers need to be paired with de cats and HR headers need HR cats

 

^^^

 

True story

the y pipe will for any year as will the cats back however the y pipe is a little different the 2 inch pipes are longer before they go into the 2 1/2 inch collector on the hr. Some people might consider that an upgrade.

Another thing to consider is its going to be a ***** swapping out the exhaust manifolds unless you have the engine out of the car.