Help with cooling system

[Rockfish]

Good morning Guys and Gals. Help please. My daughter has a Astra van sportive 1.9 diesel. There is at the rear of the engine 2 metal pipes that ru across the back and down to a block at the o/s rear. The block has a aluminium plate surrounding it with 2 coolant pipes connected to it. Can anyone tell me what it is , as she needs the 2 coolant pipes that connect to it. The main dealership doesn’t seem to know what it is. Many thanks 

[Rockfish]

Update.

Found it, oil cooler.

Does anyone know where i can get the said hoses, just been to my local supplier of vauxhall parts only to be told they are NLA, had a look on the bay of evil and they are out of stock. The dealer said they come complete with metal pipes and hoses.

Many Thanks.

[Vauxhall Owners Club]

The best and cheapest route would be to get one made by a company like Hyphose who make industrial hoses to order if you take yours in and they make to the same pattern