Module or Brain Box It must be matched to the exact part number of your current ECU. This data must be provided to complete your order. You will be shipped a matching ECU that must be reset by your authorized dealer to ensure proper function. All Modules are sold as exact matches and must be reset before proper function can be ensured. Plugs or wiring harness The ECU (part type 590) is the main computer module that runs the engine and main engine components OUR WARRANTY IS THAT WITHIN 30 DAYS WE WILL SHIP OUT ONE REPLACEMENT TO CUSTOMER-NO MONEY IS REFUNDED ON ELECTRICAL ITEMS----MAKE SURE YOU ASK YARD FOR THEIR WARRANTY ON THESE---DO NOT BUY IF THEY WILL NOT GIVE YOU A WARRANTY