07-09 Legacy Spec B 6spd swap into 02 WRX - whats needed?

Metalweasel · 12-14-2021, 08:50 PM

Wanting to swap a 'Subaru Legacy Spec B Transmission 6 Speed TY856WBDAA 3.9FD' into my 02' WRX, since my current WRX JDM trans has bite the dust.

Found one that comes with:
- Complete trans
- Shifter
- Flywheel/Pressure Plate
- Starter
- R180 matching rear diff
- Drive shaft

What all would I need to make this swap happen? This ones comes with a R180 rear diff, but is 3.9 the actual FD? Seems there's a lot of debate about this on forums I've read so far, does anyone know for sure?

Any info on would help greatly, thanks!

* Registered users of the site do not see these ads.

Bugeye115 · 01-02-2022, 10:11 AM

This is a very common question; that might be why you aren't getting any answers. I'm actually attempting a 05-07 Spec B swap soon. I found this thread to be very helpful: https://forums.nasioc.com/forums/sho....php?t=2893387

Good luck!

12-14-2021, 08:50 PM	#1
Metalweasel Scooby Newbie Member#: 508825 Join Date: Nov 2019 Vehicle: 2002 Impreza WRX Silver	07-09 Legacy Spec B 6spd swap into 02 WRX - whats needed? Wanting to swap a 'Subaru Legacy Spec B Transmission 6 Speed TY856WBDAA 3.9FD' into my 02' WRX, since my current WRX JDM trans has bite the dust. Found one that comes with: - Complete trans - Shifter - Flywheel/Pressure Plate - Starter - R180 matching rear diff - Drive shaft What all would I need to make this swap happen? This ones comes with a R180 rear diff, but is 3.9 the actual FD? Seems there's a lot of debate about this on forums I've read so far, does anyone know for sure? Any info on would help greatly, thanks! * Registered users of the site do not see these ads.

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

01-02-2022, 10:11 AM	#2
Bugeye115 Scooby Specialist Member#: 217771 Join Date: Jul 2009 Chapter/Region: SWIC Location: oklahoma Vehicle: 2004 WRX 2000 Audi S4 B5	This is a very common question; that might be why you aren't getting any answers. I'm actually attempting a 05-07 Spec B swap soon. I found this thread to be very helpful: https://forums.nasioc.com/forums/sho....php?t=2893387 Good luck!