Crankcase Vent Valve Breather Hose Kit -Value Kit -Compatible with BM/W E46, E39, E60 320i, 323i, 325, 325i, 325ci, 328i, 330i, 330ci, 330xi, 525i, 528i - PCV Crank Case Ventilation Oil Separator Hose

Awesome price, fast shipping, great fit. I recommend a bit of grease or lubricant on the o-rings and the mating surfaces of the tubes. This may help them seat into place easier especially when working in tight areas. This is a relatively easy job but time consuming due to the removal of a lot of items to gain easier access. Another helpful tip is to mount the diaphragm body itself into place first and note that the manifold vacuum tube inserts easily then rotates to lock as opposed to the other tubes as they ‘clip’ into place. Other individuals posting non favorable reviews regarding fitment may be having trouble visualizing the assembly process however I cannot speak for them. I had zero issues with this very affordable replacement part.

I think that the main concern people have with these off-brand parts is long term quality. I replaced the entire CCV system in my 2003 525i Touring myself. the old system, including the oil separator were (with no exaggeration) crumbling into pieces, as I found out during the repair. However, I could tell that the OEM oil separator (as old and damaged as it was) was made of a denser plastic than the one I was replacing it with (the Quwei kit). Even so, this Quwei model fit decently well (the oil separator was a little tough to secure in its place, but it did fit) and the the hoses (which did not seem very stout) went in without any trouble or —thank the Lord— signs of breaking. I was very careful with all of them, but even so you do have to put some pressure on them.Be SURE to use a little silicone spray on the O-rings. This will make them click into place with nearly no resistance.I priced out these same actual BMW parts from another source and came up with a total of around $240 for the four hoses and the oil separator. This kit cost me $40. My engine went from a very rough idle to purring like a kitten (as they say). I really couldn't believe the difference replacing the older decrepit parts made.Having never performed this task (CCV replacement) before, it took me about four hours. I dawdled quite a bit and really took my time to get everything right. I didn't remove the manifold, so that made things a little more challenging. But it really wasn't a terribly difficult repair. And these parts seem to be decent quality and a good fit.Four stars: the parts fit well, but the plastic seems to be a bit less dense (though not too bad) than OEM

I was glad they included all the tubes, I need them all. I read some complaints in the reviews that the O-rings were too big, they must have fixed that because all mine fit OK. I did a dry run of assembling all the tubes to the CCV and then removing them, since you cannot assemble the CCV into it's location with the tubes attached. Since O-rings are rubber, and therefore high friction, you need to put some silicone grease on them plus in the hole they fit into, to allow them to go on and off easier. Where these tubes mated up to fittings already on the car, you might have to clean the hole out with some fine steel wool, to get existing carbon of the surfaces. Same thing for tubs they fit over. Removing the old tube from the CCV valve to the CCV exit at the top of the engine was next to impossible, I had to cut it out at both ends. In my case, the lower drain tube below the CCV was completely broken and separated, such that all the oil separated was just being dumped on the lower engine. Plus the CCV was therefore sucking outside air into the intake, air that had not been accounted for by the MAF sensor, which caused the computer to accurately throw a lean mixture code (PO171 and PO174). I think that was the whole problem, because after I disassembled the old CCV valve, the diaphragm was NOT ruptured, probably it was OK. The lean codes are now gone.

The part fit as described and I'd order from this place again on the future

The diameter of the fitting that connects to the valve cover is too large and cannot seat into place, causing a vacuum leak. I had to cut it off and attach my old factory elbow on the end:( Also the angles on this tube are not the same as factory part, total pain trying to connect it at the ccv valve. The stock BMW oem parts fit flawlessly! I will always purchase oem parts from now on!

Overall good product. The o rings didn't fit though.

We'll see how it holds up over time. I was a little worried due to the cheap price and some complaints from others.I install Vaico CCV kits at work on customer cars that cost more than double what this does all the time. Construction is no worse with this. Everything fits well and functions as designed.Do not forget to place a vacuum cap on the Nipple of the CCV Valve! Your factory valve should have one. Don't leave it open!Anyone having problems getting the ends to snap together just put a little petroleum jelly on them and they'll click right in.

Fit my x3 just fine except some of the rubber o rings were a little too big. Swapped them with the o rings of the old valve. Car has run well for a week now. Plastic seems to be good quality. Can't beat the price.