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

I had to use a smaller seal to get this to slide in, very minor and part lined up great.

Usually this comes with the entire hose, or you can buy this item at your auto part store for like $30+ .... This product didn't have to over spend and super easy to install

Used with an n54. Bolt holes were slightly misaligned, thats fine, understandable, whatever. The o-ring doesnt fit. You can try for however long you want to try and get it in but it wont, unless it pinched the o-ring hard enough to tear. Then after that, putting it all back together to have it stream out coolant. Ive bought other aluminum mickey mouse flanges on amazon, only reason I went for this one was because of 1 day faster shipping. Get the one with better reviews, its not worth struggling over.

You have to lube up the o ring to get it to sit in place also use some lock tight on the screws.No complaints

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.

Great fit and I recommend completely. It was easy to install. I replaced the one that came with the hose and use this one.

Good quality. Easy to install.

I have a 2015 BMW x1 3.0 6LThis part fits the tube, but the bolts holes doesn’t, it’s slightly smaller… will never be able to tie the bolts.This trick may help someone.Personally I modify the item. With my drill, I made the holes bigger, not for a bigger bolt, but for a more clearance… after that all good. I’ve been using it for a while already and no issues at all. Good money value

This is a perfect upgrade to replace the BMW plastic coolant adapter at the oil cooler.

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.

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

Had to use a different oring and drill out the holes but worked as it should

Dont waste your money, I’m an automotive mechanic for 15 years, it’s just a trash!!!