Its a very tight spot to get to that single bolt/transmission cap. But be VERY careful that this bolt does not snap. Ask me how I know. I think someone mentioned above that the bolt is a break away bolt that keeps that cap on/off.

When you tighten the bolt, do not over tighten it. The dipstick will stay in place b/c the dipstick is held in place tightly by the other 2 mounting points.

Once it's installed, its a simple procedure to buy a decent extractor pump with a long/thin pipe to extract out transmission fluid. Will save you a LOT of money and time that going to a dealer.

 

isn't the point of adding this so I don't need to use a pump? Just going to drain from underneath and fill from the top with a slim funnel.....

 

You can do it that way, but it requires ramps/jacks and stuff.

Much easier to pull it from the top and fill it from the top. Doing it this way cuts the time in half.

 

ill avoid any use of a pump if i need to lol..... draining from the bottom isn't an issue

 

When you get up in age (I'm now 61 ;-) ) anything I can do, to not have to do work under the car will be better.

 

haha that's fair. Now that you say how difficult it is maybe ill just have my shop do it. Based on what I've read, sounds like its much easier on a lift and if you can remove the driveshaft near it, (im AWD) even better.

 

I can confirm this also works on a 2012 M37. Will Order another set for my G37 now. I got the parts from yoshi parts.

Caveats (2012 M37)
MIddle bracket has a 1/2” gap that requires a spacer and longer 10mm bolt.

Exterior of the dip stick tube that connects to the transmission I had file down as it was very tight stock. I couldn’t get the end to fit flush. After filing to reduce it a bit it fit.

 

does all the liquid come out using a tube? I am under the impression a lot stays inside the transmission, so you only pull about 1/3 of the liquid.

but a "take photo of dipstick, lift, drain, refill until back to same mark at dipstick" seems simpler in concept if not in execution.

 

I am considering this addition, and my thinking is as follows.

Dealer performed the fluid exchange (12 quarts) 15K miles ago and I will assume that the level is perfect since the machine/procedure they use (70 psi, which is similar to the water pressure in your house) is calibrated to place a perfect amount of fluid in the transmission.

I will then measure the distance the end of the dipstick extends into the transmission and create a tube for my transfer pump that is a corresponding length, maybe an inch or two longer as I'm assuming that the dipstick does not go anywhere near the bottom of the transmission.

As such, I will install the dip stick then take a reading and that will be my gold level.

I will then use the hand transfer pump to remove as much fluid as possible, then measure how much was removed. If less than the drain and fill amount of roughly 4 quarts, I will extend the hose slightly on the transfer pump.

Once a system is in place, I will perform the service every other oil change, which is similar to what I do with my Hondas as those provide a dipstick and are also known to fail if you follow the silly recommended long change intervals recommended by Honda.

I'm also considering using the drain plug as well since I need to be under the car for oil changes anyway. The little hex T5 drain plug is a little fragile, so I'm always worried it will strip at some point. Maybe I'll just buy a replacement?

I believe that this is the full list of PNs as the original ones got lost near the beginning of this thread:

31083A/31377-JL01A (upper nut)
31083A/31377-JL01A (lower nut)
31084-20301 (dip stick tube seal)
31086-EY00A (dip stick)
31080-EY00B (dip stick tube)

~$70 on Amayama with $24 shipping est.

 

see those two little nubs that are 2/3 the way down the dipstick tube? My car had wires in the way that I didn't want to move, because they would lose slack in them, so i hacksawed those off and also sanded down the sawn edges. the bottom and top bolt were plenty to hold the tube in place.

and eyepro. a lot of crud came down as i was tetrising up the tube from below (much easier than trying to go down from above.

good luck and have fun!