Alternator Bosch or OEM BMW

I changed out my original Valeo alternator with a Bosch unit at 100k miles. Never had a problem with either one.

I bought a Bosch reman for my X5 about 3 years ago, no issues whatsoever.

I'm guessing you could be Australian the labour charge would be somewhere between 120 and 150 per hour plus parts which retail close to 550 for a good quality Bosch unit so your not too far off the mark with the quote.

I have only rudimentary experience working on cars, but I got the OEM Bosch for like 300 (less core return deposit after I mailed back the old core). Took me about an hour or so to replace myself.

I only trust OEM, Denso, Valero, and Hitachi. Bosch isn't too bad.

I have one. I replaced a Bosch with it. Hasn't had an issue and had a lifetime warranty.

I replaced the battery, and upgraded to an AGM battery while I was at it. The problem still wasn’t solved though.

I order a Bosch AL113MX Reman Alternator (yep Bosch reman the Motorola) since that was what was currently in there. The 81 has a big square York compressor mounted right on top of the alternator which means that to get the rear alternator bolt you better have the right extensions and you are going to do it blind. So after at lot of effort I got the old alternator out and the new one in and only then did I notice that the pulley did not line up.

I bought a brand new, OEM Bosch alternator from Rock Auto. A week back I started noticing a bearing squeak sound in the engine on startup... Later got another battery light... Today was driving and lost power steering suddenly and got battery light again. Pulled over as the car was getting hot quickly. Opened the hood and the serpentine belt was shredded. Alternator was completely seized and had burnt belt on the pulley. Got it towed home.

I had a bosch alternator in my Mark 2.. 8valve motor. I noticed the battery was not being charged. so instead of dealing with the voltage regulator or brushes etc, b/c the unit was old I decided to go with a brand new one. making me think i should have ponied up to the Bosch.