The black pipes are coolant bypass pipes...the pipe sticking towards the front goes to the water pump, the two at the back go to the heater core. The little nipple is supposed to go to the egr spacer at the throttle body...the other side of the egr spacer goes to a little nipple on the black pipes pictured. The hole with the screen in it is for the PCV valve ( it will need a PCV grommet ). The white sensor is the intake air temperature sensor. There's a threaded hole on the bottom right of the first picture ( not circled )...that is the hole for the coolant temperature sender...it allows the dash to show engine temperatures. Either one of those square hole plugs ( not circled ) are perfect for after market temperature gauge senders. The one in the back is the best one for an aftermarket temp gauge. The front one is good for a fan temperature sensor ( if running electric fans ). Hope this info helps. Good luck.