Volkswagen and Audi starting using plastic thermostat housings on most of their V6 cars around model year 2000. Earlier model years used an aluminum housing. We have not seen a lot of the later plastic housings leak if they are not disturbed. We have seen them leak after a thermostat has been replaced. Replacing a thermostat on one of these vehicles is common practice when a timing belt is done, because it is not uncommon for thermostats to malfunction and replacing one involves removing the timing belt first.
If you replace the thermostat it is a good idea to also replace the thermostat housing. A new plastic housing is a reasonable replacement and should last the life of the thermostat. For high performance, turbo applications or customers just looking for a little peace of mind backdating to the more durable aluminum housing for about $70 more is a good choic
Bumper pulled forward, timing belt removed, plastic housing removed exposing the thermostat
To schedule an appointment with your friendly neighborhood experts at DART Auto, give us a call at 303-296-1188 or fill out the form below with your information and requested services. One of our team members will get back to you as soon as possible to confirm your appointment.
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