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This isn't the engine you were looking for...

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4 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW

Discussion summary

YOUR RESEARCHThis isn't the engine you were looking for...

Leading reported evidence

Install on my m96 3

Performed · outcome unconfirmed

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
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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.

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 · Original poster

For anyone curious, I talked with my mechanic this morning and it was definitely an original 997 water pump installed on my M96 3.6L engine (gasket hadn't been snipped and markings on the pump and engine housing matched too well to be a replacement).

Original post Read captured discussion
This isn't the engine you were looking for...
Read full discussion summary

Leading evidence: 'Install on my m96 3' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install on my m96 3' (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.

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

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Replace best guess is the original engine

Performed · outcome unconfirmed

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 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 · Original poster

My best guess is the original engine was replaced under warranty for the first owner with a later model M96 that used some of the 997 parts during transition.

Original post Read captured discussion
This isn't the engine you were looking for...

Use on it according

Performed · outcome unconfirmed

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 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 · Original poster

Looks like the engine is the original and not a replacement (as far as I can tell) given that it has a M96/03664xxxxx engine code, and the 997 water pump can actually be used on it according to Loren over on a Renntech post (

Original post Read captured discussion
This isn't the engine you were looking for...

Use some of the 997 parts during transition

Performed · outcome unconfirmed

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 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 · Original poster

My best guess is the original engine was replaced under warranty for the first owner with a later model M96 that used some of the 997 parts during transition.

Original post Read captured discussion
This isn't the engine you were looking for...

Replace water pump

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

My mechanic was replacing my water pump for me as a preventative measure today, and it turns out the pump that was in there is the original, and a 997 part.

Original post Read captured discussion
This isn't the engine you were looking for...
Frequently discussed actions (6)

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

Install on my m96 3

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 · Original poster

For anyone curious, I talked with my mechanic this morning and it was definitely an original 997 water pump installed on my M96 3.6L engine (gasket hadn't been snipped and markings on the pump and engine housing matched too well to be a replacement).

Original post Read captured discussion
This isn't the engine you were looking for...

Replace best guess is the original engine

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 · Original poster

My best guess is the original engine was replaced under warranty for the first owner with a later model M96 that used some of the 997 parts during transition.

Original post Read captured discussion
This isn't the engine you were looking for...

Replace water pump

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

My mechanic was replacing my water pump for me as a preventative measure today, and it turns out the pump that was in there is the original, and a 997 part.

Original post Read captured discussion
This isn't the engine you were looking for...

Use on it according

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 · Original poster

Looks like the engine is the original and not a replacement (as far as I can tell) given that it has a M96/03664xxxxx engine code, and the 997 water pump can actually be used on it according to Loren over on a Renntech post (

Original post Read captured discussion
This isn't the engine you were looking for...

Use some of the 997 parts during transition

No successful repair reported for this finding.

0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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 · Original poster

My best guess is the original engine was replaced under warranty for the first owner with a later model M96 that used some of the 997 parts during transition.

Original post Read captured discussion
This isn't the engine you were looking for...

Use these hybrid 997 parts

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

What years were the M96 engines using these hybrid 997 parts?

Original post Read captured discussion
This isn't the engine you were looking for...
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.

  • Pelican Parts: 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: 20261026T194705Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

So, interesting discovery on my new-to-me 2004 C4S today: Turns out I don't seem to have the original engine in the car. My mechanic was replacing my water pump for me as a preventative measure today, and it turns out the pump that was in there is the original, and a 997 part. My best guess is the original engine was replaced under warranty for the first owner with a later model M96 that used some of the 997 parts during transition. Can someone shed a little more light on these engines? What years were the M96 engines using these hybrid 997 parts? I know the engine code would help a lot but I actually got rid of a lot of tools a couple years ago and don't have the means right now to get under the car and look. I'd love to know to understand part compatibility better for future part orders, etc. Also, was the power/torque any different? Anything else of importance to understand? Any information would be helpful. Cheers!

POST 2 / ORIGINAL POSTEROriginal post

OK, just following up on my original post. Looks like the engine is the original and not a replacement (as far as I can tell) given that it has a M96/03664xxxxx engine code, and the 997 water pump can actually be used on it according to Loren over on a Renntech post ( http://www.renntech.org/forums/topic/41751-m96-and-m97-confusion/page-2 ). Either the factory installed a 997 pump on the engine originally or it was replaced with one at some point (I'll ask my mechanic tomorrow if he had to snip the gasket). In short, feel free to ignore my original question .

POST 3Original post

I had an extremely late production 2005 C4S. It had 997 parts absolutely everywhere. Was really interesting to see. Mechanically there's nothing revolutionary between a 996.2 and a 997.1.

POST 4 / ORIGINAL POSTEROriginal post

Interesting, thanks for the reply dtw. For anyone curious, I talked with my mechanic this morning and it was definitely an original 997 water pump installed on my M96 3.6L engine (gasket hadn't been snipped and markings on the pump and engine housing matched too well to be a replacement). So there you have it.

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