Aluminum Water Hose Fitting Upgrade Fit for BMW 1 3 5 6 7 Z4 (Engine N52 N53 N54 and N51 3.0-litre),Replaces# 11537541992 11537544638 Engine Coolant Hose Flange

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.

It fit and works great

Would not advise buying. It wouldn’t fit with the o ring nor with the old one, it would only go in with no o ring. So I had to put back my old hinge and o ring. Edit: I had to add coolant to the O ring, along with somewhat forcing/prying it in in order to get it to fit flush.

I just want to show how much the holes are not aligned comparing with one from Rein that works. See pictures. But even if you managed to put the screws through (it’s possible) and brave enough to tighten them - the o-ring gasket is too big and the bottom side won’t go in (yes, with a lubricant applied). No wonder people reported leaks. Anyway… stay away from this “improvement”. Find one from Rein or other reputable brand.

Fit amazing easy install great quality great price

Effective Upgrade: After installation, I have experienced no leaks, which is a significant improvement for my vehicle. Quality Material: The aluminum construction feels durable and sturdy, offering a long-lasting solution compared to the original fitting. Cons: The installation process was a bit tricky. The holes didn't line up perfectly, making it a challenge to fit. While there was no need for drilling, finding the right angle to fit it required some patience and effort. Wider holes could have made the installation easier. I rate it 4 stars because of that. Despite the challenging installation, the Aluminum Water Hose Fitting Upgrade is a worthwhile investment for anyone experiencing leaks. The improved performance and durability make it a recommended upgrade for BMW E90 owners.

One upgrade thats worth it! Price is great as well as quality and installation.. EASYYYY

hard to get it to seal properly but fitment was pretty good

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

Une petite différence au niveau d'un trou. Je l'ai à peine agrandi et tout est beau