Crimping stop parts (small contacts) and butt connectors

WARNING: This page is about a different car, the 2013 BMW 550i GT, 2012 BMW 550i GT, 2011 BMW 550i GT, and 2010 BMW 550i GT. However, it is still accessible from the selected car via links, so may be relevant.

Special tool 61 4 320
1. Tool without crimping head.
2. Crimping head (STRIPPING INSULATION AND CUTTING FIBRE-OPTIC CABLES TO LENGTH) .
3. Crimping head (CRIMPING FIBRE-OPTIC CABLE CONTACTS) .
4. Crimping head (CRIMPING MQS CONTACTS) .
5. Crimping head (CRIMPING MPQ CONTACTS) .
  
  Fig 1: Identifying Tool Crimping Heads (Small Contacts)
  Courtesy of BMW OF NORTH AMERICA, INC.
6. Replacement blade (face-cutting fibre-optic cables)
7. Replacement blade with tool (insulation stripping unit)
8. Universal crimping head