12 captured repliesDiscussion pagination complete · Source accounts, not a confirmed diagnosis
THIS DISCUSSION / SOURCE-DERIVED OVERVIEW
Discussion summary
YOUR RESEARCHengine serial number
Leading reported evidence
Install within the last few years
Performed · outcome unconfirmed
No successful repair reported for this finding.
0
Reported fixes
0
Unsuccessful attempts
1
Discussions
Read evidence and context
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Discussions that performed work without a confirmed outcome
1
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Performed · outcome unconfirmed
Bearing in the mind the engine looks new it was probably installed within the last few years.
Leading evidence: 'Install within the last few years' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Install within the last few years' (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
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Performed · outcome unconfirmed
'V' is 1997, 'W' is 1998, 'X' is 1999, 'Y' is 2000, then digits are used starting with '1' which is 2001.
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Discussions that contain suggestions
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Suggestion
Mine had 36k on the engine it when I purchased the car, but decided to change ALL fluids along with the water pump, belt, spark plugs, fuel filter, air filter since the new engine was replaced in 2003.
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Discussions that contain suggestions
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Suggestion
I'd use not so much an average, but an overall assessment of the entire vehicle.
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Suggestion
Mine had 36k on the engine it when I purchased the car, but decided to change ALL fluids along with the water pump, belt, spark plugs, fuel filter, air filter since the new engine was replaced in 2003.
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.
12 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: 20261026T163944Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources
I bought my 2000 C2 last year from a dealer that did not have lots of documentation. Looking over the engine I noticed it was pristine and did not look like a 15 year old motor. The metal fittings looked like new with no pitting. Any way I decided to look up the serial number. M96/04AT66Y65588. Now the way I undestand it the AT means remanufactured. Is that correct? But from what I have been reading it should have 66 and a number for the year. This one has the Y which is the designation of 2000 . Is there a way of knowing when it was remanufactured as I have no paperwork and it was not mentioned when I purchased it? Would this be a plus as the mileage on the motor would be significantly less?
Same situation here, replacement engine from Porsche is great news. I have 105k on the car but just over 40k on the engine.
Obviously make sure you do any required services/maintenance on the engine depending on its mileage as it won't jive with the odometer. Mine had 36k on the engine it when I purchased the car, but decided to change ALL fluids along with the water pump, belt, spark plugs, fuel filter, air filter since the new engine was replaced in 2003. Better to be safe than sorry unless you have documentation.
My understanding is AT signifies a remanufactured engine. The Y is the year of the engine's initial manufacture. It could have been remanufactured at any time from that time to just before it was installed in the car.
If you can contact the dealer that installed the engine it may be able to tell you when the engine was installed. It may have paperwork that provides even more details on the engine but I would not bet on it.
A CarFax report might provide you with more info, possibly when the engine was replaced and at what miles.
If the engine was installed shortly after the car was sold the engine can have a good number of the miles on it that show on the odometer. Bearing in the mind the engine looks new it was probably installed within the last few years. So it could have, probably does have, considerably fewer miles. This would be a plus.
Same situation. There is a post on here about it. Found out what the codes mean but don't remember where.
M96/03 means engine type
AT means remanufactured or austauschmotor
Next three are year it was remanufactured which may not match the year it was installed.
S means x51
66w is 1998
66x is 1999
66y is 2000
661-665 is 2001 - 2005
Last numbers are serial code.
Thank you for the response. I contacted a dealer here but they do not have the data . I will contact the dealer where the service had been done it the first 60000 miles as they are in the maintenance booklet and might have some information that they can get from the VIN
Hypothetically, if I were to sell my 996, how would one go about negociating the price? I have all of the service records since the new motor was put in.
If the odometer reads 115k miles, but the engine only has 50k, would you estimate the value of the car based on engine or odometer milage? Or would you take the average? I don't plan on selling it anytime soon since it's in excellent condition, but you never know...
The first '6' is the # of cylinders. The 2nd '6' means it is a normally aspirated engine (except for the Carrera 4 model engine in 1999). This '6' could be could be a '3' (GT3 engine), or '4' (turbo-charged 3.6l engine), or '8' (Carrera 4 N/A engine).
The 'Y' is the year of engine manufacture. 'V' is 1997, 'W' is 1998, 'X' is 1999, 'Y' is 2000, then digits are used starting with '1' which is 2001.
My info is the remanufactured engines retain their original serial numbers.
I think that a 50000 mile 996 would be worth more than a 105000 mile 996 with a 50000 mile engine. So to think half way sounds about right. It is a plus but not to the point of a less driven car.
I'd use not so much an average, but an overall assessment of the entire vehicle. As an example, you might have a 50000 mile engine, but one window won't work, or a heated seat won't work, or the microswitches for the hood/deck lights don't work, etc etc etc.
Now, if the car was pristine at 115k miles, where EVERY LITTLE THING worked, and no wear to the leather, etc., I'd give extra bucks for that. Might consider pricing data for a 75k mile car as something in the middle.
This is a source reference. Confirm exact model applicability in the original material.
