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Old 01-09-2013, 07:34 PM   #17
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Join Date: Mar 2010
Location: Dallas, TX (USA)
Posts: 2,213
My Ride: E46 330i
Originally Posted by taibinhvuong View Post

Other thing you can try is temporary removed the O-ring inside the new hose to see it can fit into the radiator neck, if it does fit with no problem, then you may have an incorrect radiator hose O-ring (it could happen even it's a dealer item).


Note: try to do the fitting with just the radiator and without the expansion tank by turning the hose 90 degree upward.
I would NOT advise you take out the O-ring(s) from the New upper rad. hose.

Also, couplers are notched to ONLY fit one way, so if you were to turn it 90 degrees it will not go on.
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