Volvo engine type numbers

This number can be found on a label somewhere in front of the engine block. The number always starts with a B (for petrol) or a D (for diesel). The next digits indicate the engine capacity, and the character(s) at the end are:
E for injection engines
ET for turbo versions
Engine type number K or A for carburettor engines
Unfortunately the label I'm talking about is frequently missing. In that case you will have to resort to the VIN (often called chassis number).