engine serial numbers

[karmax125]

hello,

My engine serial numbers is M96/0166X55183 , can you tell me if it's a rebuilt engine ?

thanks

jpa

[Richard Hamilton]

That is the original engine I would think. The "X" denotes the Model Year as being MY1999.

[Loren]

Richard is correct - X is the model year. Explanation below...

[karmax125]

ok thanks, but first registration is 05/05/98 and the serial number is inscribed in reverse ? 38155X6610/96M

[Loren]

ok thanks, but first registration is 05/05/98 and the serial number is inscribed in reverse ? 38155X6610/96M

Then the engine may have been replaced with a NEW engine.

[karmax125]

Loren ,why do you think that?

[Loren]

Loren ,why do you think that?

If the serial number is different than the original registration and the serial number does not include the letters for exchange parts - then either the engine was replaced with a new one (which Porsche did in the early days because there weren't any rebuilds yet) - or one of the numbers is a mistake.

[karmax125]

ok Loren i understand ..after check my engine serial number M96/0166X15983 , X is the model year since 1999.

thanks thanks a lot for this explication, apparently the new engine is in the car since 2001.