Hi club Lexus my SC just sprang a coolant leak from the top of the engine, there's a valve right below the EGR valve that is wet with coolant I am pointing too in the photos can anyone tell me what part that is called? Thanks?

 

pretty sure that's a fuel pressure regulator, there's a bunch of coolant lines on top of the engine so just replace them with new ones.

 

Thank you oldmantan! Is it best to use an OEM regulator?