The following parts listed below are for MK5 GTI's for 2008.5 and 2009. The cooling system is an important system in your MK5 GTI with the 2.0t TSI. This system prevents your engine from getting too hot. Overheating any engine can cause major engine failures, and the TSI engine is no different. Be sure you keep your 2.0t GTI running great by keeping the cooling system properly maintained. In this category you will find Water Pumps, Coolant pipes, coolant hoses, coolant bottle caps, electric fans, thermostats, coolant bottles (reservoirs) and of course Coolant (Antifreeze).