i bought a used car from a dealership four months ago.yesterday the car broke down it need head cascet,water pump,timming belt,rediater and thermostad

Nasim, Sorry to hear of your car troubles. They are certainly substantial. Assuming you purchased the car in MN, you should really consult with a Minnesotta attorney, which I am not. You may have common law claims of misrepresentation or fraud if the dealership made representations about the condition of the car even though the papers said "as-is." Some state laws provide additional protections. If your state requires a pre-sale inspection by the dealer and a Buyer's Guide that requires the dealer to disclose known defects, that may help you. Gordon Leech, Attorney with Consumer & Employment Law Center of Wisconsin