For adjustment of the charge pressure positioner -V465- on the turbocharger.

Type / model: Various VOLKSWAGEN Group models
Engine / assembly group: 4-cylinder direct injection 1.8 l, 2.0 l 4V TFSI
(Generation III)

Reference: For example:
Audi A3 2013 >
4-cyl. 1.8 l, 2.0 l, 4V TFSI direct injection engine (generation III)