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You are offerding on aGM # 994161 NOS Engine Block Heater 600 Watt / 120 Volts. This comes with the heater, Cable, a freeze out plug and instructions. Please note the condition of the instruction sheet. This is in excellent unused condition. The research I have done says that this fits a Chevrolet Big or Small block engine.Please confirm that this part number is correct for your vehicle before purchasing.