This is 

This is an Assembly Fixture for EGR Cooler , Adaptor EGR and Pipe Exhaust of BSIV vehicle. So basically we have three components to be assembled with help of fixture consisting of different fixture parts as shown in the 3d model and detailed drawings.

In brief, function of EGR( Exhaust Gas Recirculation) is to lowers combustion temperatures by diluting the air/fuel mixture with a small amount of inert exhaust gas.