It is a dedicated pipeline bushing for the small-displacement naturally aspirated engines of the Volkswagen Group's EA111 series (mostly used for sealing the interface between the coolant pipeline and the cylinder block/radiator). The specific compatibility information is as follows:
- Volkswagen Polo (6R Platform): 2009-2014 model years, 1.4L naturally aspirated and 1.6L naturally aspirated variants;
- Volkswagen Golf MK VI (5K Platform): 2008-2013 model years, 1.4L naturally aspirated and 1.6L naturally aspirated variants (including base models and comfort trims);
- Volkswagen Lavida (2008-2015 Model Years): Versions equipped with 1.4L (CLS engine) and 1.6L (CPJ engine) naturally aspirated engines.
- Škoda Octavia (1Z Platform): 2007-2014 model years, 1.4L naturally aspirated and 1.6L naturally aspirated variants (including hatchback and estate versions);
- Škoda Fabia (5J Platform): 2008-2014 model years, 1.4L naturally aspirated and 1.6L naturally aspirated variants.
- SEAT Ibiza (6J Platform): 2008-2017 model years, 1.4L naturally aspirated and 1.6L naturally aspirated variants.
Only compatible with 1.4L naturally aspirated (1390cc) and 1.6L naturally aspirated (1598cc) engines;
Volkswagen EA111 series (cast-iron cylinder block, single overhead camshaft (SOHC) structure, multi-point electronic fuel injection technology);
- 1.4L models correspond to codes such as CLS and CFB;
- 1.6L models correspond to codes such as CPJ and CDE.



