Packing and clamps for the downpipe can be seen under related products, at the bottom of the page.

Downpipe OPEL Astra, Zafira OPC 2.0T

Downpipe OPEL Zafira A,B OPC 
2.0T
2002-2010
192, 200, 240 km
FWD

Downpipe OPEL Astra G,H OPC 
2.0T
2002-2010
192, 200, 240 km
FWD

Pipe diameter– 76 mm

OE numbers:

55559192

55559191

NOTE:
Our gasket in 2.25" fits with inside diameter as well as with the bolt holes.
However, it protrudes slightly beyond the flange. It has no bearing on anything other than appearance.