I need a new radiator for my 88 T-II but it seems after searching that there are differences I just cant see what they are. Someone please enlighten me. Just want to know if I can put a s5 radiator in my s4 since they seem to be more readily available.

 

Both can be mounted on the FC... S5 will have the neck sticking out, S4 will not have the neck on it and looks "cleaner" without a fan shroud...

 

On my last FC, I had a Koyo S5 rad with a slim shroud/e-fan setup. I actually liked the neck sticking out, because I could get the bottle of coolant or distilled water right up to the neck before pouring and never spill a drop.

 

the radiator itself with work with no issues, however the brackets on each side will need to be swapped over in order for it to bolt up

 

Thanks for the info.