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is my replacement engine X51 option.

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5 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis

THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHis my replacement engine X51 option.

Leading reported evidence

Repair intermediate shaft broke

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 · Original poster
warranty repair, intermediate shaft broke.
Original post Read captured discussion
is my replacement engine X51 option.

Read full discussion summary

Leading evidence: 'Repair intermediate shaft broke' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Repair intermediate shaft broke' (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 · 5 captured posts examined · 0 partial discussions

Compare 2 other evidence results

Replace engine

Suggestion or failed attempt

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
Better question: Why did you have to replace the engine?
Original post Read captured discussion
is my replacement engine X51 option.

Replace x51

Suggestion or failed attempt

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
I've often wondered what it was going to cost when the time comes to replace my X51.
Original post Read captured discussion
is my replacement engine X51 option.

Frequently discussed actions (3)

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

Repair intermediate shaft broke

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 · Original poster
warranty repair, intermediate shaft broke.
Original post Read captured discussion
is my replacement engine X51 option.

Replace engine

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
Better question: Why did you have to replace the engine?
Original post Read captured discussion
is my replacement engine X51 option.

Replace x51

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
I've often wondered what it was going to cost when the time comes to replace my X51.
Original post Read captured discussion
is my replacement engine X51 option.

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: 20261026T103553Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I recently had the engine on my 04 C4S replaced, the car had the X51 option originally, is there any way I can tell if the replacement engine has the X51 internals. The part number on the invoice is 996-100-995-CX and is described as 3.6L 05 996 CARR. Any help appreciated. I assume that the exhaust and intake would be swapped from old to new, so that would not help in identifying the new engine. Thanks, Mark

POST 2Original post

doesn't the x51 have different heads? You can write down the casting number and do some research to make sure they're x51 heads assuming those are part of the kit.

POST 3Original post

Question: How did you like the X51? Was it worth the effort in your opinion? Better question: Why did you have to replace the engine? Do you think that X51 might have caused any adverse effects?

POST 4Original post

I'm pretty sure the rebuilt engines come with the intake so you should be able to tell from that. Black or silver. I've often wondered what it was going to cost when the time comes to replace my X51. Can I ask what they charged you? Jim

POST 5 / ORIGINAL POSTEROriginal post

warranty repair, intermediate shaft broke. Thanks for your replies. Mark

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