vRS Clutch and DMF

I've been looking into changing my clutch and dmf and found this;

 

http://www.darksidedevelopments.co.uk/products/sachs-1-9-tdi-6-speed-02m-dual-mass-flywheel-and-clutch-kit.html

 

Now my question is, will this be oem? If not is it gonna be cheap and fail on me after a short period of time?  I only ask because the part numbers on darkside's website don't line up with the part numbers on Vag-Cat, but I know the standard clutch is made by Sachs?!?

 

 

Partlist:       clutch / 1.9ltr. / diesel eng.:       1 038141025R clutch pressure plate   240MM / ASZ;   -1 038141025RX clutch pressure plate   240MM /   2 038141032G clutch plate   240MM /   -2 038141032GX clutch plate   240MM /   3 N 90320701 12-point head bolt   M7X14 /   4 0A5141671     release bearing / with hydraulic operation   /   5 02F141143A seal   9,25X6,07X1,78 /   6 see illustration:   301- /   7 N 90847001 hexagon head bolt c/w shoulder   M7X25 /   8 G 000100