AST6017 is required for spark plug removal/installation on direct injection BMW petrol engines.

These engines require a very 'thin walled' socket in order to reach the spark plug and locate correctly onto the 14mm Bi-Hex.

A spring clip located in the socket holds the spark plug in place during removal/installation.

Applications:

BMW Direct Injection petrol engines: N43, N53, N54

This socket can also be used on engines with similar access issues to BMW, such as Citroën, Peugeot, Renault and Mercedes.