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This is a genuine BMW OEM part – the O-ring seal for the heater matrix coolant line pipe.

The part number is 8377824, which also cross-references to 64118377824 and 64110395156.

If you're doing cooling system work on your BMW and need that specific seal to prevent leaks, this is the one.

It's a brand new, authentic BMW part.

Small part, but crucial for a leak-free cooling system.
Don't mess with aftermarket copies – get the real deal from BMW.



4.8 out of 5