A-1 CARDONE 79-6508V Engine Control Computer Vehicle Type: Car Fitment: 2003-2004/Chrysler/300/M/::Vehicle specific Flash programming reqd ON or OFF the vehicle.Accurate VIN and mileage are reqd. Additional vehicle specific on-car programming must be performed AFTER installation to prevent drivability and starting issues.; with OE # 4896 556AA-AD 4896 510AB-AD