I'm looking around for a starter for my 1150GSA and thought someone might find the info I'm finding useful, so I'll post it here as I dig it up 
The OEM unit is a Valeo D6RA55, or D6RA75 , two models listed and they're interchangeable, but the 75 version (apparently) has more secure magnets.
Alternative part numbers from other manufacturers:
<table id="main"><tbody><tr><td>BMW 12412306700 </td> <td>Bosch SR5050N </td> <td>Delco RS41337 </td> <td>Iskra IS0790, IS9403 </td> <td>Paris Rhone D6RA55, D6RA75 </td></tr> <tr> <td>Valeo 186276, 187259, D6RA55, D6RA75 </td></tr></tbody></table>
The cheapest I've found them for is £80 plus shipping at the moment......There is another supplier that does them for £99 plus a tenner
You can also get most of the parts, including armatures, rebuild kits,solenoids and even the drive gear itself (which I've seen reported on some threads here as being unavailable as a separate part) from HERE
Unless I can find a better deal, I'll be ordering one of the brand new Valeos from Wood auto supplies in the morning (and I'll report back as and when it arrives etc), but to put it in perspective, the OEM replacement from Motorworks is £180 plus delivery and I've seen them from some companies at £300 plus.
Hope this helps someone
EDIT......I had a quote for rebuilding for 60 quid a couple of days ago, but for the extra 20 quid for a brand new unit, I don't see the point.
The OEM unit is a Valeo D6RA55, or D6RA75 , two models listed and they're interchangeable, but the 75 version (apparently) has more secure magnets.
Alternative part numbers from other manufacturers:
<table id="main"><tbody><tr><td>BMW 12412306700 </td> <td>Bosch SR5050N </td> <td>Delco RS41337 </td> <td>Iskra IS0790, IS9403 </td> <td>Paris Rhone D6RA55, D6RA75 </td></tr> <tr> <td>Valeo 186276, 187259, D6RA55, D6RA75 </td></tr></tbody></table>
The cheapest I've found them for is £80 plus shipping at the moment......There is another supplier that does them for £99 plus a tenner
You can also get most of the parts, including armatures, rebuild kits,solenoids and even the drive gear itself (which I've seen reported on some threads here as being unavailable as a separate part) from HERE
Unless I can find a better deal, I'll be ordering one of the brand new Valeos from Wood auto supplies in the morning (and I'll report back as and when it arrives etc), but to put it in perspective, the OEM replacement from Motorworks is £180 plus delivery and I've seen them from some companies at £300 plus.
Hope this helps someone
EDIT......I had a quote for rebuilding for 60 quid a couple of days ago, but for the extra 20 quid for a brand new unit, I don't see the point.
but it's spinning over fast as anything now 
