Here are the part numbers Case Construction parts site lists for the 530CK. ????
You can copy and paste the numbers to Google search, and get numerous hits.
Be forewarned... I bought a new radiator for my 480C aprox. 45 days ago. If you find one reasonable, if they have a phone number, take the time to call for a price check. All but one I called to check had raised their prices $50.00+. The fellow I got mine from honored his site price. I'll try to remember to check who I got it from, and post later...
A35604 - Standard Clutch
A35583 - With Torque Converter