My Memory is Going

[woodcreekpete]

It's been so long since I took the top end apart (6 mos.) that I can't remember where this goes. The only part that wasn't labelled. You figure you're going to know where everything belongs but I'm drawing a blank on this one. Help me out please.
  Thanks, Pete

[woodcreekpete]

Partzilla to the rescue - oil cooler mount!