4PCS Left and Right Crankcase Vent Pipe for BMW 550i 650i 750i 750Li Alpina B7 X5 X6 xDrive35i N63 4.4L 11157575640 11157575641 11157646086 11157646087

First, the top of Amazon says this does not fit my 2013 BMW 550I 4.4L but the part description says it does. I can confirm it does. However, in hindsight I should have just bought the upper hoses and not the 4 piece set. When removing mine for the dreaded coolant Y repair, I found both upper hoses fell apart as the plastic was brittle from heat. I figured I might as well replace all. However, the lower hoses are exponentially more difficult to replace and I elected not to replace them and instead only replace the top hoses and fittings, snapping the existing lower hoses into the tee of the new hoses. Doing this worked great. In hindsight, maybe I should have just replaced the broken plastic part with some silicone hose and some hose clamps... Maybe next time.

Items installed and are still working.

didn't fit m,y vehicle

Very good thanks

Used them to make a catch can

I gave a lower score on easy to install because the car itself. It was 3-4 hours to install with moderate automotive repair experience, but the product was as described and worked perfectly.

very good part great seller

Worked great on my 2009 BMW 750i N63 engine. Turns out my old pipes were leaking so this was a quick and easy fix. no more smoking out of the tailpipes or adding a quart of oil every few weeks. very happy.

Changed both upper hoses in a couple hours on my 2013 4.4 twin turbo with perfect fit. Now no exhaust smells coming into cabin anymore! (original ones both cracked open due to heat and leaked crank case fumes under the hood) Like the other review stated, the bottom two hoses are much more difficult to change so I left the original bottom ones on as they still looked in good condition and they easily attached to these new upper ones. Just be careful not to break the bottom hose clips when removing the old upper ones from them. Would recommend.

I bought these hoses as I thought I had a vacuum leak and wanted to save a few bucks. I installed these and it resulted in a whistling like a tea kettle and so much vacuum in the engine that I couldn’t get the oil cap off. I ended up having to put the original hoses back and the symptoms listed above disappeared. Best to go with OEM in the future.