Aluminum Water Hose Fitting Upgrade for BMW 1 3 5 6 7 Z4,11537544638

Whilst this is a much needed enhancement, it is by no means without issues. You are unlikely to just take the old plastic flange off and swap it out with this one. Chances are that you'll have to drill out the holes like I had to as the original holes don't let you screw it in and seat it properly. Also as you can see the O ring supplied with this is larger (wall thickness of the rubber) than the OEM original (the pic has the supplied on the left). I ordered an OEM one instead to use on my N52 engine.

Very good option to stop the keak

Great item worked well for my engine highly recommended 👍

Screw holes did not line up with the car, had to bore larger holes. The supplied rubber washer is also too large for the coolant hole, it required a huge amount of force to fit 80% of the way in and then broke.After re-boring the screw holes and re-using the old rubber washer, I got the part to fit satisfactorily. I would not recommend if you're hoping for a plug and play part

MUCH better than the cheap plastic OEM part, Just a reminder though, these thread into an aluminum block so be very careful to start them finger tight first, then evenly tighten both bolts to push the fitting into the chamber. If you don't, it will slightly misalign and you run the risk of stripping the threads. The one comes with the replacement o ring, and be sure to get some antifreeze on that seal prior to attempting to push it into the chamber. IT IS A TIGHT FIT, but that's what you want, so just be careful. You might also want an extra hose clamp on hand, as the one that came with this began to bend as it got tight, so I had to replace it for peace of mind. Overall, great product though.