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Old 03-22-2015, 08:45 PM
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2007 E70 3.0si Upper Radiator Hose Question

It appears there are two versions of the upper radiator hose on the N52 E70. First one made up to 2009 had a small vent tube connecting to the main vent hose that goes from radiator to expansion tank. The second one made from 2009 onwards eliminated that vent tube. They both have same part numbers though and I just received the latter(from 2009) from my order. My question is can I make the conversion to the 2009 and later version without any adverse effect on the cooling system? To do that I would have to order the straight through main vent hose as well. Thanks!

See diagrams below:
Up to 2009


From 2009
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Last edited by SmartSolution; 03-22-2015 at 09:57 PM.
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