We at TC Euro designed this tool to replace the BMW seal installation tool (83300490965). This tool is intended to be used for the front crank seal behind the main bolt. 
 
The tool will allow you to install seals to the correct depth easily without damaging the metal surrounding the seal, or the seal itself. It is designed to be used with a rubber mallet. The rubber mallet is better at distributing the load on the tool to make sure the seal is installed evenly. Using a non-rubber hammer can break the tool.
 
This tool is designed for use with the following crankshaft seal part numbers.
- 11141275466
- 1141265431
- 11141274346
- 11141736932
- 12012045B