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THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHEngine Pulley Options for a 966 with a Manual Trans
Leading reported evidence
Check idler by spinning it
Suggestion or failed attempt
No successful repair reported for this finding.
0
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0
Unsuccessful attempts
1
Discussions
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Engine Pulley Options for a 966 with a Manual Trans
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Leading evidence: 'Check idler by spinning it' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Check idler by spinning it' (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.
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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.
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Suggestion · Original poster
I've been looking to replace my engine belt pulleys on my 2004 4S that's nearing 100K miles.
Engine Pulley Options for a 966 with a Manual Trans
Replace lower pulley in my 2003 targa tiptronic
Suggestion or failed attempt
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Unsuccessful attempts
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Suggestion
Looking to replace the lower pulley in my 2003 Targa Tiptronic.
Engine Pulley Options for a 966 with a Manual Trans
Replace maintenance reasons)
Suggestion or failed attempt
No successful repair reported for this finding.
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Unsuccessful attempts
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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.
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Suggestion
If it spins freely, it is worn out, if it just turns and immediately slows down or stops then it is still useable (unless you want to replace for maintenance reasons).
Engine Pulley Options for a 966 with a Manual Trans
Replace maintenance reasons)
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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.
Suggestion
If it spins freely, it is worn out, if it just turns and immediately slows down or stops then it is still useable (unless you want to replace for maintenance reasons).
Engine Pulley Options for a 966 with a Manual Trans
Coverage and how to read this overview
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.
5 eligible posts · 0 unverified posts · 1 discussions match the subject in their title or opening post.
Rennlist: 1 discussions
0 evidence records excluded for query context · 0 excluded by outcome qualification · 0 adjusted by outcome qualification.
0 acknowledgements have no verified action link; they do not establish a repair result.
Generation: 20261026T135432Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I've been looking to replace my engine belt pulleys on my 2004 4S that's nearing 100K miles. It seems all the pulleys and pulley kits I've seen are for the automatic trans 996/986. Why are there engine pulley differences between the manual and auto cars? Also, all the engine pulleys on my engine have P/N 996-102-120-55 on them regardless of location. However, all the catalogs I've seen list a different pulley for each location.
When I replaced mine, they all had the same part number.
As far as I know the automatic has the same part numbers as the manual transmission as well.
I gave one of my old pulleys to someone who used it to fix a squealing pulley on his 2000 911 with an automatic.
I suggested he replace it, but he‘s been driving it for at least 8 months now with a used 996.2 manual pulley.
The pulleys are all the same but the hardware is different for each location, the part number includes pulley and hardware.. It looks like for the manual they changed to the 997 part. I don't know why they would not have also for the tip.
Basically, the idlers (pulleys) are all the same but the hardware they use to attach is different.
You will find a difference in idlers, most older ones are a steel construction, where the newer ones are plastic; both seem to work as well.
You can check an idler by spinning it. If it spins freely, it is worn out, if it just turns and immediately slows down or stops then it is still useable (unless you want to replace for maintenance reasons).
For you viewing pleasure:
You Tube
Bumping this thread as I'm in the same position. Looking to replace the lower pulley in my 2003 Targa Tiptronic. Pulley has 996.102.120.55 as part number, but I'm not finding that on here. Looks like 99610211958 is the correct one?
How the heck do I know which of the two bolts is the correct one?
This is a source reference. Confirm exact model applicability in the original material.
