Quote:
Originally Posted by 1QuikWS6
Looking to buy (or rent) the BMW Diff Axle Shaft Removal Tool 83300495851 (Device 335120) for a MDiff swap
Will buy outright or rent for my install - for rental I would pay fee + shipping both ways, return to owner after my install...
Not gonna do this install any old mickey mouse way using prybars & the like 
PM me if you have one available
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Attached is a list of BMW specialty tool makers from Bentley manual. I didn't spot it on Baum website. You may want to call these sources in case they haven't updated it on their website.
Also check AmazonUK website. I've found better than US prices there before and there is no VAT tax when shipping from UK to US. Also Amazon seemed to have cheap/fast shipping to US for Amazon Prime members.
You didn't mention the 50mm open wrench needed to remove and install the main driveshaft nut. I've seen that open wrench head advertised for like $75. Bryan at Kies Motorsports showed me a much less expensive motorcycle wrench that he found. Either way I'd add about a 2-foot long piece of plumping metal pipe from Lowe's/Home Depot to be like a breaker bar handle to provide a lot of torque that's needed.
I'm sure you've been researching installation procedure. Here are a couple of things from my installation that may be helpful...
One step that doesn't seem to be commonly known is at the end. The main 50mm nut on the new LSD has a factory lock-tite type substance that has something like a 20 minute working time (can't find my notes for exact time) once that you start torquing it down.
Then you should remove the fill plug while it is on the lift to make sure that the LSD really has been filled completely at the factory and that some hasn't leaked out which is common.
Make sure to use the very specific LSD fluid. See photo for the fluid that was specified to me for MP LSD for F30 xDrive automatic model. Was told not to use stock rear differential fluid or some fluid touted as "smoother running" since both will screw up guts of MP LSD.
I replaced the stock LSD fill plug with a Dimple magnetic plug as extra protection. It's the same size as stock rear differential fill plug.
Breaking period is 700 miles where no Wide Open Throttle runs. Try to do a lot of smooth accelerations on left and right curves. Suction out fluid at 1,200 miles and replace. Mine didn't need to be topped off so I had fluid ready for 1,200 replacement.
The last thing that's supposed to be done is to drop lift down to the floor. Leave car sitting for several hours before driving since the lock-tite type of material needs a couple hours to properly setup.
Good luck! I noticed the LSD immediately when I first started to turn the wheel onto a highway on-ramp. Never realized how much rear wheel slip I had until it was gone! BMW electronic systems kick in above 30% slippage to either apply one or more rear brakes or cutting throttle. But the mechanical LSD kicks in immediately to apply power to the rear wheel that isn't slipping. So you really notice the responsiveness entering and accelerating into a curve. Also notice it a lot at a standing start when a light turns green.
Hope this helps!