fullymatted.
Back to search
Rennlist

Where is engine S/N or VIN located?

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

Discussion summary

YOUR RESEARCHWhere is engine S/N or VIN located?

Leading reported evidence

Replace from the original

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

Well, I'm thinking that anytime an engine is replaced from the original, it devalues the car.

Where is engine S/N or VIN located?
Frequently discussed work

Replace )

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

Face it, these are all mass produced cars, and engines today are R&R items (remove and replace).

Where is engine S/N or VIN located?
Read full discussion summary

Leading evidence: 'Replace from the original' (no explicit attributable resolution; this is a reported action or suggestion). Across 1 matching discussions, The most frequently discussed action is 'Replace )' (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 · 21 captured posts examined · 0 partial discussions

Compare 4 other evidence results

Replace under warranty

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

I bought my car with 30,000 miles on the chassis but only 8,000 miles on the engine which was replaced under warranty because the IMS went on the original.

Where is engine S/N or VIN located?

Replace )

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

Face it, these are all mass produced cars, and engines today are R&R items (remove and replace).

Where is engine S/N or VIN located?

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

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

Why would it bother you if they replaced the engine?

Where is engine S/N or VIN located?

Test during a ppi

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

Also, is it unreasonable to ask for an engine leak down test during a PPI?

Where is engine S/N or VIN located?
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.

Replace )

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

Face it, these are all mass produced cars, and engines today are R&R items (remove and replace).

Where is engine S/N or VIN located?

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

Why would it bother you if they replaced the engine?

Where is engine S/N or VIN located?

Replace from the original

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

Well, I'm thinking that anytime an engine is replaced from the original, it devalues the car.

Where is engine S/N or VIN located?

Replace under warranty

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

I bought my car with 30,000 miles on the chassis but only 8,000 miles on the engine which was replaced under warranty because the IMS went on the original.

Where is engine S/N or VIN located?

Test during a ppi

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

Also, is it unreasonable to ask for an engine leak down test during a PPI?

Where is engine S/N or VIN located?

Use flashlight

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

Use a flashlight.

Where is engine S/N or VIN located?
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.

21 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: 20261027T173940Z · outcome-qualification-6. Deterministic extraction; no AI model inference. How we use sources

POST 1 / ORIGINAL POSTEROriginal post

I'm doing a PPI real soon. I read horror stories about engines being replaced and the prospective buyer not knowing about it. Does anyone know where the engine serial number / VINI is located so that I can compare it to the chassis VIN number? Also, is it unreasonable to ask for an engine leak down test during a PPI? Many thanks in advance!

POST 2Original post

Not sure about the location of various number stampings, but IMHO, a leak down test is probably advisable on any purchase over $10K.

POST 3Original post

The engine number is etched into the block at the oil sump plate/ block parting line on a boss that sits at a 45* angle to the block.

POST 4Original post

There is no point is looking at the engine number and comparing it to anything. it won't match or be even close to matching the VIN. Look for it from the left side of the car. On a sort of tab. Use a flashlight. Readable from the left side (right side up)

POST 5 / ORIGINAL POSTEROriginal post

Quotes source post: 7010276

Hmmmm... that doesn't sound right. The engine # is supposed to match the VIN #.

POST 6Original post

Quotes source post: 7011153

No the engine number should match the group of engine numbers that match model year production run. Engine numbers are independent of chassis numbers.

POST 7 / ORIGINAL POSTEROriginal post

WOW - so how would I know if the engine has been replaced? Stealers won't discuss warranty issues since it contains "personal customer data"....

POST 8Original post

That's BS. They can give you the warranty/repair history of the car without divulging the prior owner info. I'd move on if somebody was not forthcoming.

POST 9Original post

Why would it bother you if they replaced the engine? What sort of horror stories did you hear? I would be more concerned with the original engine, at least in early 996s. A new engine is IMHO, a good thing. I would pay a little more because the problem had already been removed and replaced. Oh, and it is reasonable (and prudent) to ask for a leakdown test. You just have to pay for it.

POST 10 / ORIGINAL POSTEROriginal post

Well, I'm thinking that anytime an engine is replaced from the original, it devalues the car.

POST 11Original post

Not if its from the factory and was installed by a dealer, IMO of course

POST 12Original post

Quotes source post: 7011812

Well in any OTHER model car you would be correct - but in the 996 world we like to be different...

POST 13Original post

Quotes source post: 7011386

Belive it or not - but it IS PCNA policy. Not to say you can't have a *friendly* dealer help you out here, but officially (and of course if they don't know you from Adam) they cannot do it. You can go move around to others all you want - but the person refusing to let you see data from another owner, wasn't doing it because he wanted to pizz you off.

POST 14Original post

I am the third owner of my car. When I showed the complete dealer history of my car to the service managerat my dealer, he said, "how did you get that?" I put it back in my pocket. The 2nd owner asked for it from his dealer and he gave it to me when I purchased the car. It is policy that they do not provide this info to owners who are not the original and current owner of the car. I'm glad I have mine though.

POST 15Original post

Quotes source post: 7005529

Indeed it is, and here is how to decipher it: - Last 5 digits on from the right are the specific serial number - 6th digit from the right is the code for the year of production - 7th and 8th digits from the right are for type of engine (NA or turbo, and for the number of cylinders Back to the year of production (6th digit from the right end) W = 1998 X = 1999 Y = 2000 1 = 2001 2 = 2002 3 = 2003 4 = 2004 etc. On my replacement engine, the stamped (or etched) number appears like this: M96/3066309588 The 6th digit from the right is a "3", denoting the engine was produced in 2003. The above comes from page 599 of "Porsche 996 - The Essential Companion" Hope this is helpful. ...Rickker

POST 16Original post

Quotes source post: 7011812

That sort of thinking is correct if you're talking about a 356 Carrera. For the 996 and 997 cars, total engine swaps are NBD (no big deal). Face it, these are all mass produced cars, and engines today are R&R items (remove and replace).

POST 17Original post

Help! I am trying to find the engine # on my car. The description is not clear to me and dang it I can't seem to find it. Should I be looking from underneath the car or from the engine bay. Thanks,

POST 18Original post

Quotes source post: 7592467

Let's see... My experience is with Boxster/Caymans and these have their serial numbers on the right side of the car which can be viewed if one gets down real low behind the passenger side (USA car) rear tire and with a bright light find the oil sump cover and the seam where it joins to the engine block. Look left towards the rear of the car and just above the seam there should be a machined surface at a 45 deg. angle from perpendicular with the engine's serial number stamped into the face. The machined face into which the serial number is stamped may be dirty so you might want to have handy a rag or paper towel and some kind of cleaner -- brake cleaner in an aerosol can -- to use to remove the grime so you can make out the number. Now a 996 has its engine turned 'round so this would put the serial number on the other side of the car and one would have to look from the driver's side, maybe from just ahead of the rear wheel. The few times I've been under 996s I never paid any attention -- save I took pics of my Turbo's engine serial number (but the engine is not the same as in the NA 996 cars and the serial number is located in a different place) -- and took pics of my Boxster and Cayman serial numbers as well. Sincerely, Macster.

POST 19Original post

Quotes source post: 7592467

On the drivers side, you dont even have to lift the car.... Look under the car right behind the DS rear wheel. The number will be facing you on the bottom, front corner of the engine on a part of the case casting that has a 45 degree angle to it.

POST 20Original post

look in your owners manual, it shows you exactly where the engine number is and with a picture

POST 21Original post

Quotes source post: 7011812

Not true. I bought my car with 30,000 miles on the chassis but only 8,000 miles on the engine which was replaced under warranty because the IMS went on the original. The new engine had all the updated parts so if anything it was more reliable than the original. It was a plus for me. In my experience if you really want to know, have a dealer perform the PPI, they can pull up the data on the car and tell you if the engine is the same as when the car was delivered. They can also tell you about the warranty and TSB history, which dealer the car was originally delivered at etc.. What they will not tell you is non-warranty work without the owner's permission.

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