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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH996 C4S Front Top Mounts - Consolidating threads
Leading reported evidence
Adjust with no problem
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I also recently fitted 997 C4S top mounts to my 996 C4S all fitted and adjusted with no problem.
Leading evidence: 'Adjust with no problem' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Adjust with no problem' (1 discussions). For that action, 0 discussions report a resolution and 0 report an unsuccessful attempt. No action has an explicit, attributable resolution report under the current rules. These are forum reports and suggestions, not a confirmed diagnosis.
Source reports, not a diagnosis or a success probability. Counts refer to discussions and can overlap.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
I also recently fitted 997 C4S top mounts to my 996 C4S all fitted and adjusted with no problem.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that performed work without a confirmed outcome
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Performed · outcome unconfirmed
Parts looked the same and when fitted the car had new alignment done with no problems all in spec and it drives great.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
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Suggestion · Original poster
I need to replace the front top mount on my 2002 C4S so i went searching on the forum to see if 997 C4S mounts are interchangeable ala C2 models.
Explicit resolution reports before identified causes, performed actions and suggestions. Within each level, matching component labels precede direct query mentions and inherited thread context; successful versus unsuccessful discussion counts, owner confirmations and independent discussion support determine order. This is not a probability of success.
Discussions that contain suggestions
1
0 original-poster resolution reports. Counts can overlap; they are not unique people or a success rate.
0 discussions have direct query context; 0 report a fix in that context. Other evidence may inherit the discussion’s subject.
Counts describe captured discussions, not unique people or a diagnosis. Author identities are not reliably stored. Exact duplicate evidence is counted once across matching discussions; one discussion counts at most once per action/state. Multiple repairs reported together remain a combination. Suggestions and failed attempts do not establish a fix. Matches cover whole discussions and can include related faults, model variants and incomplete threads.
7 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
911uk: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
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Generation: 20261026T174436Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
Hi,
I need to replace the front top mount on my 2002 C4S so i went searching on the forum to see if 997 C4S mounts are interchangeable ala C2 models. While there is much discussion, there doesn't seem to be a definitive explicit verdict in any of the threads.
Based on my research from threads on here and the 2010 electronic Porsche parts catalogue, the 996 and 997 C4S mounts while they may look very similar, are not identical and therefore not officially interchangeable.
This is also supported by a comment i read in one of the threads (can't find it now) where someone bought 996 and 997 top mounts and gave them both to Centre Gravity to see if they were the same and CGs comment was that they will fit, but the 997 isn't as adjustable in the 996 or something to that effect.
Also, the 996 parts catalogue lists the C2 997 P/N as interchangeable with the 996 P/N. If the same was correct for the C4S P/N I'm sure it would have been listed in the 996 parts catalogue.
If anyone has any official paperwork to support the interchangeablility i would only be too happy to accept that i am wrong as it will save me a few quid!!!
The fact of the matter is that the 997 C4 top mounts will
physically
fit a 996 C4, but aren't/weren't
designed
to fit a 996 and so there is a compromise of adjustability as raised by CG.
I would be 99% confident that no Porsche garage would fit 997 C4 top mounts to a 996 C4 for that reason. Just to clarify the 996 C4, C4S and turbo share the same top mounts.
I bought the Hamburg 996 ones - £120 each.
It's your choice...
I deliberated for ages, bought oem 997 C4S mounts and my Indy fitted to my 996 C4S.
Parts looked the same and when fitted the car had new alignment done with no problems all in spec and it drives great.
Glad I went down that route as it saved me about £400.
I can't see how they can be much different.
The body mount is the same place, the coffin arms are the same length, the hits are the same.
The shocks could be shorter? does 997 run a lower ride height?
This would put the top mounts at a very slightly different angle.
They may also be a slightly different rubber compound.
Conversation on this recently here :
http://911uk.com/viewtopic.php?t=127283&highlight=
I went for the Hamburg ones and bearings for my 996T from Eporsche and 9e fitted.
Saved a bit on the cost of OEM Porsche 996 units
:thumbs:
I also recently fitted 997 C4S top mounts to my 996 C4S all fitted and adjusted with no problem.
I did fit coffin arms, control arms, (after market) top mount bearings (oe) and Techart lowered springs at the same time and every thing went together perfectly.
The car drives great....and I saved a few quid!!
Go for it.
:thumb: :thumb:
This is a source reference. Confirm exact model applicability in the original material.
