This flywheel is used on the 2.0 tdi's.
2.0 TDI, 10.2003 - 11.2008, 1968 ccm, 136 CP
2.0 TDI, 12.2004 - 11.2008, 1968 ccm, 140 CP
2.0 TDI, 11.2005 - 11.2008, 1968 ccm, 170 CP
2.0 TDI 16V, 10.2003 - 11.2008, 1968 ccm, 140 CP
2.0 TDI 16V 4motion, 08.2004 - 11.2008, 1968 ccm, 140 CP
2.0 TDI 4motion, 01.2007 - 11.2008, 1968 ccm, 140 CP
I've heard US guys using the regular GTI / 2.0 tfsi 200hp one. That one was more expensive by about 100 euros. It was my tuner that suggested that I get this diesel one, they use it on all their dq250 cars when it's time to change apparently.