MTC 122053 BMW E53 X5 E83 X3 Transfer Case Motor Gear Carbon Fiber Reinforced Nylon , Black

If you're good with minor mechanic work, and you own a BMW x3/x5 with the electronic motor that controls the transfer case then I recommend buying this piece. It will save you $300-$800 for a new motor or $1200 for the BMW dealer quote to fix. I just fixed my motor last night, which consisted of removing the motor from the transfer case, disassembling the motor, and switching out the gears. There are plenty how-to videos on how to actually perform the procedure. It took me roughly a few hours, but worth it to save a ton of money. Anyhow, the stripped out factory gear was replaced with this one, and no issues. The triage of ABS, BRAKE, 4x4 light turns itself off once the motor has been serviced, and all is well for hopefully a long time.

Much like everyone else here, got the trifecta of the dashboard lights. Read up on it and ended up here. YouTubed a couple of videos and decided to DIY it. This part was a perfect fit for my 2005 BMW X3. Word of caution, getting this done is a lot harder than what the videos show. Getting the transfer case and installing this part was not the hard part, putting back the brackets was incredibly hard. You will have to put your truck on tire stands and with the jack, lift the brackets in place and then screw them back on. While it's a DYI job, you will need at least a medium to experienced DIY mechanic skill set to get it done. Wouldn't recommend this to a beginner. Once everything was back together, all the lights were gone and haven't been back since! This little part and DIYing it saved me $1500.

. . . chances are, if you own a BMW X3 or X5, at some point you will get the "terrible triad": your "ABS", "Brake" and "4X4" lights will come on simultaneously, perhaps accompanied by a "thunk". And you'll feel like Tom Hanks in "Apollo 13" - your whole dashboard control panel is lighting up and it looks like mechanical doomsday.The bad news: Odds are, that's your transfer case actuator motor going out. Take it to a mechanic and they'll quote you anywhere between $1200 to $2000 to replace it (a new motor alone is around $850).The good news: the odds are very good that you don't need a new motor. You need a new carbon fiber gear that goes into the motor. And this is it. For some reason BMW/Bosch went "Dollar Store" on this part and after about 70K - 80K miles, the little plastic gear gets worn down by the worm screw. When that happens the DSC gets disabled and you are running in full time 2 wheel drive instead of the X3/X5 all wheel mode. Not good, and all hell breaks loose on your dashboard. Stop panicking.Before you slap down huge dough on a new transfer case motor, buy this and ask an indy mechanic to swap it out in the motor.. There are a couple of DIYs on YouTube that walk you through it. I'm not equipped with the right tools/lifts to do it, so I asked a local mechanic to do it after referring the videos to him. Not a tough job for somebody who knows what they are doing.The job took an hour and I got charged $150. The lights went out immediately and the car runs perfect. This part is a Godsend to BMW owners and is light years better than the OEM part.Triad lights? Get this and save thousands.

This one is a puzzler.First using a plastic gear against a metal worm drive, in a transfer case motor doesn't seem like a good idea (GM makes these) - aluminum would have been better IMO.Second I couldn't tell any visible difference between this part and the OEM one I removed - so that brings to question why other online specialty shops are selling one for $100-$125 when its available here for under $15? Is there any difference? I don't think so. I've driven my car a few hundred miles since installing the part without any issues, so I thing this one is just as good if not the same as those others. I noticed that the white nylon bushing that this rides against also had a couple hairline stress cracks, but that part doesn't seem to be available - it should be available as a separate item or included in the replacement package - how much more could it cost?I only gave it 4 stars because I have only driven it a few hundred miles and don't know how it will wear over time. My OEM had 104,000 on it and was barely worn (really didn't need replaced so now I gotta look elsewhere for the cause of the 3 dash lights)

Based on the picture, I was skeptical that this gear would be good quality. However, the price was so much better than the "odometer gears" place that I decided to order it anyway and take a look. I was VERY pleasantly surprised. The surface finish is good, with no flash or porosity. The molding risers were well trimmed, and the corners are sharp and solid. A well molded part. Fit was exact in my 2008 BMW X5 3.0si.