Having problems with your BMW Z3 ?
What would caluse my bmw z3 radiator to split the plastic siding on the radiator?
It doesn't take anything special for today's plastic radiators to crack. You didn't say what model year it was but it's not unusual after 10 years or so for it to develop a split. Of course higher than normal temp and excessive vibration or knocks could attribute to it also. A radiator shop can replace the plastic part using the fins from the old one.
Repair Help & Product Troubleshooting for BMW Z3
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