How do you replace the front crank case seal on a 1997 BMW Z3?

To replace the front crankcase seal on a 1997 BMW Z3, first disconnect the battery and drain the engine oil. Remove the accessory belts, crankshaft pulley, and any obstructing components to access the front of the engine. Carefully pry out the old seal using a seal puller or similar tool, then clean the sealing surface and install the new seal, ensuring it sits evenly. Reassemble all components in reverse order, refill the engine oil, and reconnect the battery.