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Plastic weakens with every heating cycle. Plastic inside my water pump makes me the most uneasy. Looking around my engine bay, I'm happy to see the coolant pipes are metal or rubber hoses. I've had some expensive and inconvenient problems with the plastic cooling system on my Mini Cooper, so looking to harden the systems in all my cars if possible.
Has anyone had an issue with a broken water pump due to cracked plastic parts?
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2005 4.8is Black/Black (sold)
1990 325is Alpine White/Tan
2005 325i manual
2018 X3 M40i
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