Does RS4 parts like intercooler and oil cooler only fit S4's?
 

Thanks for any reply!

They should fit any car with modification ;) RS4 IC's are not direct fits to S4's
 

they require cutting or bending of a small part of the fenders, cutting or modifying of the hanger brackets, slight internal bumper mods and some shaving of the front radiator support piece - not sure what that's called, and custom hoses. With that in mind you should be able to fit them in any car ;)

The RS4 oil cooler should fit most cars that use a filter with a metric thread, can't remember what size. Again, some mods are required, but they should fit easier on new generation Audis