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7 Series - E65 / E66 (2002 - 2008)
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  #1  
Old 01-31-2014, 12:22 PM
tbsbmw tbsbmw is offline
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Expansion tank coolant hose

The coolant hose that connects to the rear top of the expansion tank has broken at a plastic T connector behind the throttle body. The dealer wants $75 for this couple feet of 3/8in hose with the various connectors. Has anyone found a cheaper source or alternate way to repair this?


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  #2  
Old 01-31-2014, 12:26 PM
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First_745Li First_745Li is offline
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Umm Home dept or any parts store if it's just hoses
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Old 01-31-2014, 12:28 PM
tbsbmw tbsbmw is offline
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it's a little more complicated than that , the hose that connects to the exp tank has a special connector


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Old 01-31-2014, 12:31 PM
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First_745Li First_745Li is offline
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try fcpeuro.com I get everything from those guys. Call them they are very helpful.
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Old 02-02-2014, 03:30 PM
tbsbmw tbsbmw is offline
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instead of the 75 dollar hose I just finished putting a 1/4inch brass T fitting in to replace the leaking factory plastic Y hose connector , cost less than 10 bucks and should be leak free for life


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Old 02-02-2014, 03:31 PM
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Very cool.


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Old 02-02-2014, 05:07 PM
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Aluminum or PVC (even stainless) will be the best thing, I don't know the corrosive effect the antifreeze will have on other materials. When changing coolant I will check the fitting to see if any deposits build up.
The fitting on top the radiator you can replace with silicone fuel injection line of the same size with two male fittings on each end.

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Old 02-03-2014, 01:18 PM
jam220 jam220 is offline
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I had the same issue, went to autozone bought the T plastic connectors and some clamps good to go
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Old 04-21-2014, 12:41 PM
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Your hoses may look good, but the problem is BMWs plastic & rubber products. The plastic connections between the prefab hose assemblies just blow apart after so many miles/hours. (thin walled plastic) We're coming up on the summer months - if you have over 60,000 miles or so, just replace them all. It almost cost me an engine.

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