fullymatted.
Back to search
Rennlist

996 C4S Gearbox vs 996tt Gearbox

Add to repair workspace
Open repair workspace
Original source
4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCH996 C4S Gearbox vs 996tt Gearbox

Leading reported evidence

Use 8

Suggestion or failed attempt

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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 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

The G96/31 gear box fits the m96/97 natural asperated -non mezger engines and uses an 8?

Original post Read captured discussion
996 C4S Gearbox vs 996tt Gearbox
Read full discussion summary

Leading evidence: 'Use 8' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Use 8' (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.

Read captured replies

1 matching discussions · 4 captured posts examined · 0 partial discussions

Frequently discussed actions (1)

These are separate views of the same evidence. Frequency alone does not establish a fix, and these counts must not be added together.

Use 8

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

The G96/31 gear box fits the m96/97 natural asperated -non mezger engines and uses an 8?

Original post Read captured discussion
996 C4S Gearbox vs 996tt Gearbox
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.

4 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: 20261026T130754Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I contacted WaveTrac's tech support to see which LSD to purchase and the person who responded told me that my gearbox takes part number 40.309.160WK which corresponds to: G50: 911 1987-88, 930 5spd 1989>, 964, 993, 968 996: GT2, GT3, turbo 6MT rear 997: GT2, GT3, turbo 6MT rear This puzzles me because I have not been able to get a straight answer anywhere on whether or not the C4S and the 996TT share the same gearbox. I have heard it both ways. Do I have a G96/31 or a G96/50 or? My C4S is a 2003 that has been converted to RWD. If anyone could shed some light on this, I would appreciate it! -Ryan

POST 2Original post

Why not cross reference the part numbers on AutoAtlanta or the PET for the C4S and Turbo? My first thought would be given the turbo made much more power than a C4S then they would have a gearbox that matched each...

POST 3Original post

The g96/50 gear box fits the "mezger" style engines (Turbo, Gt3, GT2 ect) and only uses a 4 bolt pattern like all previous "mezger and air cooled engines. Same bolt pattern as the g50 , 915, 901 gear box. The G96/31 gear box fits the m96/97 natural asperated -non mezger engines and uses an 8? bolt pattern. While the g96/50 and the g96/31 share "some" of the same internal parts, they are very different. According to CMS the 40.309.160WK fits C4awd, Turbo,and all 02 up C2 (which will include your m96/31)......and must use G50 flanges or have your flanges cut down...........40.309.165WK fits 99-01 C2...

POST 4 / ORIGINAL POSTEROriginal post

Thanks for the replies. WaveTrac was suggesting the wrong diff.

This is a source reference. Confirm exact model applicability in the original material.