i have a brand new 19 row oil cooler, but it needs 5/8 screw fittings, (not a problem cos i have the fittings) but 5/8 is to big for my oil cooler hose already on the RS, is there some sort of reduder fittings i can ger for the oil cooler so that i can use 3/8 fittings on there (which i also have), and before you ask why i bought the wrong oil cooler, i actually didnt the company sent me the wrong one as it was marked up incorrectly on the box, but dont have any more in stock so i thought i may as well keep this i if i can sort this prob out.

cheers for any help