A-Premium Air Intake Manifold Flap Adjuster Runner [fits 6Cy 2.5L, M54] Compatible with BMW [3,5 Series E46 E39/E60] 325i 01-05, 325Ci 01-06, 325xi 525i 01-2005 & X3[E83] 2004-2005, Z4 [E85] 2003-2005

This DISA valve worked perfectly on my 2005 BMW 325i. I saw negative comments by some customers who did not know how to test it before installation and could not install it properly.Testing the vacuum by holding on the hole is not good enough as the amount of vacuum by holding on the hole with the finger is not enough. Also, turning the key to 2nd position is not going to generate vacuum to close or open the flap.I installed mine and test drove the car on idle and on highway speed. Worked just perfect and no codes.The valve seal and material is of high quality.Extremely happy. 5 star

Did not fit perfect. I made it work though. So far so good

The rubber seal is not an o-ring. Rather the manufacturer used a molding system to form a continuous seal. And if it tears during installation, it's nearly impossible to remove the old seal and install an o-ring. Given the diameter is a bit over-sized tearing is a real possibility. I gave it a try and failed. I made absolutely sure the mating surface was clean, used a sufficient amount of lube to get it to slide in easily and it still tore. Leaving my car with a nasty vacuum leak, which gives you the P0171/0174 codes not to mention the computer overcompensates by injecting extra fuel, which leads to the car operating hot. Now my car is stranded in some 700 miles from my home. It seems like a nice unit but unless you are lucky and perfect in installation I wouldn't purchase this unit. I'd get a kit and refurbish your old unit. And that's exactly what I'm doing and will be taking it with me on an airplane to fix the problem. Please note this is not my first rodeo. I like working on BMWs and know my way around M54 engines quite well.

Works great and fit snuggly.Suv idles as it should after startup and accelerates without stumbling from a stop.Solid part and was packaged well.

Not rebuilt brand new love it works great had it in for about 3 months now no problems

It does the job. Expect to lose power at mid to high RPMS. Needed this as temporary fix for my E46 325ci. As others reviewers pointed out this DISA is bound to fail prematurely. I would not recommend this long term. BMW is charging nearly 500$ for the OEM part. Only use this if you really need your car moving no matter the circumstance. Like the saying goes “you get what you pay for” and honestly I’m satisfied.

Installed as a replacement on a 2004 X3 2.5l & have driven over 200 miles w/ part installed w/ "NO" issue. About 1 1/2 hour & not complicated to install.Saved me a ton of $$$! I could tell the improved performance after putting this & MAF on the vehicle.The dealership wanted over $1000 parts+labor for this & MAF.I replaced both for $105 :)

It fit right in and worked perfectly. No problems so far and I have had it in for over 3 months now.

I was using the original but I did have to change the gasket on it a little while back. I use an aftermarket gasket which I found was all torn to pieces. Upon inspecting the opening on the intake I found the plastic edges to be very sharp. I took some files and got rid of the sharp edges. I bought this valve because the flap on the original was not springing back. To install this properly you need to push it in carefully and then bolt up evenly otherwise it'll go in crooked and show up the gasket. I'm keeping the original just in case this fails and then I'll just buy a repair kit but so far it does work really well. I will come back here and update my review in a couple of months or upon failure if any but for now five stars.

Se comporta mejor que otra china que adquirí

Not bad, took a little bit of work to install into my 2003 bmw z4 3.0l M54. ( felt a bit tight mounting it into the intake manifold) overall it does the job.

Went from gutless below 4500rpm to having torque again and it didn't break the bank

The flap rattled apart within 2 months destroying my engine! Beware this will ruin your vehicle!