603 identification

[abosely]

What information does the numbers on the front of the block tell about the version this engine is? It’s from a 603 out of an 87’ 300D.
Can’t see it in the picture, but there is a 6 in front of the 03, as in 603. I’m sure that’s probably obvious but thought I might mention it. :-)

There are some cast in numbers on the left side of block also. Do they give any further information about this engine?

[Diseasel300]

They're casting numbers. You have a 603.960 which was the standard engine in the W124. The rest of the numbers in the string are revision and casting numbers.

[dieselbenz1]

https://en.m.wikipedia.org/wiki/Mercedes-Benz_OM603

I was lead to believe the 6th digit 603 96x defined which oil pan was factory fitted.

[Dr. Sternschnuppe]

603960 12
1 - LHD
2 - automatic transmission.

[abosely]

Thanks Diesasl300, the 960 makes sense, good to know which version it is.
Cheers, Allen

[wwii]

On my 603.971, the last 4 matched up with the engine serial number on my datacard.