I have the G96-01 Transaxle and IU use the clutch slave cylinder listed below. It works and will engage and disengage, peddle is stiff after power bleeding. I found the best price on Ebay as Porsche parts are expensive from parts dealer. Hope this helps,
https://www.ebay.com/itm/Premium-Clu...item21543024da
Brand: Centric Parts
Part Number: 138.37003
Item Condition: New
Item Description: Clutch Slave Cylinder
Manufacturer Brand Description: Premium Clutch Slave Cylinder-Preferred
Quantity Needed: 1;
Item Specifics:
UPC: 805890630401
Application Summary - 2000: 1999 - 2008 Porsche 911, 2005 - 2005 Porsche Boxster
This part generally fits Porsche vehicles and includes models such as 911, Boxster with the trims of Carrera 4 Convertible 2-Door, Carrera 4 Coupe 2-Door, Carrera 4S Convertible 2-Door, Carrera 4S Coupe 2-Door, Carrera Convertible 2-Door, Carrera Coupe 2-Door, Carrera S Convertible 2-Door, Carrera S Coupe 2-Door, S Convertible 2-Door, Targa 4 Convertible 2-Door, Targa 4 Coupe 2-Door, Targa Convertible 2-Door, Targa Coupe 2-Door . The engine types may include 3.2L 3179CC H6 GAS DOHC Naturally Aspirated, 3.4L 3400CC H6 GAS DOHC Naturally Aspirated, 3.6L 3596CC 219Cu. In. H6 GAS DOHC Naturally Aspirated, 3.6L 3596CC H6 GAS DOHC Naturally Aspirated, 3.8L 3824CC H6 GAS DOHC Naturally Aspirated. This part fits vehicles made in the following years 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008.