S60 I, V/XC70 II, S80 I, XC90 I - Engine # 3188689 and on >
All others as listed.
The Engine number is stamped on the left side of the cylinder block at the top of the mounting for the water pump.
There is also a decal on the timing casing with the engine type, manufacturing number, and serial number.
NOTE: Engine Serial Number Can Be Found On The Timing Cover