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Are 3.4L and 3.6L headers interchangeable?

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YOUR RESEARCHAre 3.4L and 3.6L headers interchangeable?

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Check online pet

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Suggestion
maybe check the online PET to see if there's a different part number between the two.
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Are 3.4L and 3.6L headers interchangeable?

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Use stock gt3 headers if they fit

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Suggestion
He told me I could use his stock GT3 headers if they fit.
Original post Read captured discussion
Are 3.4L and 3.6L headers interchangeable?

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Check online pet

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Suggestion
maybe check the online PET to see if there's a different part number between the two.
Original post Read captured discussion
Are 3.4L and 3.6L headers interchangeable?

Use stock gt3 headers if they fit

No successful repair reported for this finding.

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Reported fixes: 0
Unsuccessful attempts: 1
Discussions

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Discussions that contain suggestions: 1

0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.

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Suggestion
He told me I could use his stock GT3 headers if they fit.
Original post Read captured discussion
Are 3.4L and 3.6L headers interchangeable?

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9 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.

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POST 1 / ORIGINAL POSTEROriginal post

Are these headers, and the aftermarket counterparts, interchangeable?

POST 2 / ORIGINAL POSTEROriginal post

Someone has to know this....53 views and no reply?

POST 3Original post

many aftermaret headers are, not sure about OEM's. maybe check the online PET to see if there's a different part number between the two.

POST 4Original post

don't mean to hijack the thread but are the cats the same for the 05 and the 99? some tell me yes, other says no.......

POST 5Original post

Quotes source post: 3969668

Did you ever find the answer to this?

POST 6Original post

Yes. All 996 NA headers are interchangeable, 98-04 (and any 996 sold in 05).

POST 7Original post

Is it worth the change? I have a 3.4L and my father in law has a 3.6L GT3. He told me I could use his stock GT3 headers if they fit.

POST 8Original post

I'm not 100% sure on this, but I don't think the GT3 headers fit, sorry. I could be thinking about the turbo though.

POST 9Original post

Quotes source post: 9147494

The GT3 headers will not fit on the M96 head. What does fit and works well is the 997S 3.8 headers. They have significantly larger ports, I run them on my 3.4....

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