Intercooler for Vauxhall Astra Diesel 1.7

I've been told by carcraft that my intercooler has a hole in it and needs replacing. Furthermore they weren't able to pick this up just a few weeks ago when the car was still within its 10k mile warranty, when I took the car in complaining about it, so now they want me to cough up hundreds.

I've seen an intercooler for sale second hand, but told it's for a DTJ/DTR astra 1.7 diesel. My engine is a 1.7 diesel DTH. Will this part be compatible with my car?