Coolant Expansion Tank Cap Combi Valve in front of the rear

in front of the rear tire

Make Model Years Audi A4 2005–2008 Audi A4 2009–2012 Audi S4 2005–2008 Audi S4 2009–2012

It ensures your parking brake holds securely on inclines

This product also goes by these part numbers: 17127575427

Coolant Expansion Tank Cap Combi Valve in front of the rearThis is a very important and often overlooked part of your car's cooling system. A properly functioning coolant cap helps regulate pressure within the system. If it leaks, proper pressure may not be reached, and your car may overheat. If it doesn't vent properly, excessive pressure can build, leading to severe leaks in the cooling system. The coolant reservoir cap should be tested at each cooling system service. Cross Reference 95510644720