10 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCH99 c4 front differential
Reported or suspected cause
diff fluid
Reported cause
No successful repair reported for this finding.
1
Identified cause
0
Suspected cause
0
Reported fixes
Read evidence and context
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 report identifying a cause
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.
Leading evidence: 'diff fluid' (1 discussions report identifying this cause; no attributable repair resolution). Across 1 matching discussions, the most frequently mentioned possible cause is 'diff fluid' (1 discussions; 1 report identifying it and 0 suggest it). The most frequently discussed action is 'Replace leaking front diff' (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 just replaced my leaking front diff on 03 4s with a used one from a local RL's 996tt.
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 suspect a cause
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.
Suspected cause
I replaced it when I thought there was a problem but it turned out to be the pinion bearing in the transmission which I then had rebuilt by Gbox.
Outcome qualification: Negation, uncertainty or missing explicit repair resolution overrides the raw extraction signal.
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.
10 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 · 1 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 am searching for a front differential for my 99 C4 Tiptronic.
Current diff is fine, but has a leak through a crack on top (according to indie)
I am in MD, but willing to pay for shipment.
thanks in advance!
I have one from my 2000 C4. I replaced it when I thought there was a problem but it turned out to be the pinion bearing in the transmission which I then had rebuilt by Gbox. I will sell it for $400 plus the shipping if you are interested.
I just replaced my leaking front diff on 03 4s with a used one from a local RL's 996tt. Your leak will get worse and you will start hearing whining sounds when off throttle. $400 offer above is very fair for a used, non-leaking, diff. I paid slightly less but guy had 2 and was happy to get some cash for one. Labor was much more than the replacement part. Good Luck.
My leak was not on top. After finding the leak and replacing the diff I noticed the diff fluid had damaged the ceramic coating on my front left rim. I had seen the discoloration when i washed my car/rims and thought it was brake dust that somehow caused the issue. Turned out to be the diff fluid.
thanks, the indie is well regarded and was ultimately surprised himself. I have not seen pictures, but I have the car back as-is.
I share your thoughts, but all indications are he is trustworthy. Thanks.
