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  1. General E46 Forum
    Hello, This is the second Wahler thermostat that develops a leak in 6 months!!!! :banghead: The leak comes from the o-ring that "seals" the electrical component of the thermostat and is the second thermostat that fails like this. I replaced the original at the same time that all the other...
  2. Miscellaneous BMW and E46 Parts
    As the thread title states, I have a like-new (only used for a couple months) genuine Wahler (made in Germany) thermostat / housing. It is in perfect shape and works great. This one came off my '00 328Ci. Car was in a front end collision and had the radiator, hoses, and thermostat replaced. Two...