Hey quick question is there any difference between s4 and s5 radiators?

8 Answers

Yes.. mainly the radiator cap..

Rad cap is directly on s4 i also think s4 has a bleeder notch on the passenger top hose side (Lhd models) and one on the bottom drivers side as more of a drain plug. My s5 only has the bottom one and an extension on the radiator cap not sure why they did it but for cooling purposes you are most likely better off with the s5 since they are made for a car with a little bit more horsepower and a little higher compression. Imo

Cory

All in all just get an afm full aluminum rad with tig welded alumn tanks. Fuck that epoxy shit and fuck plastic tanks

ReyQuestion author

The thing is I bought a koyo rad for s4 when I had an s4 but scrapped and bought an s5 and was hoping it would fall right in

Cory

It does not?

Cory

Koyo should fit in both

Stephen

It will fit..you should be perfectly fine

ReyQuestion author

Thanks guys