Is the VIN number located on Engine?

[deanwormer]

I just had an engine replaced and am questioning whether the mechanic used the engine that came out of the Carfax vehicle information he showed me.  Is there a VIN or any other identifying number located on the engine?

[RX400h]

For Lexus, the engine identification number location varies by model. For example, for models like ES 250, ES 300, and GS 300 (96-03), the code is on the front left side of the engine block. For models like ES 330 and GS 300 (04-06), the code is on the engine block. You may be able to find our where yours is by speaking with the dealership parts department person. As far as I know, the VIN is not stamped or tagged on the engine.