RaceTec AutoTec Forged Dome Piston - 4.310 in Bore - Big Block Chevy (Set of 8) 1000686 55003 See Application Guide for Additional V202101 Size:Youth 12 1968 1968 GMC C25 AFC55000011862

RaceTec AutoTec Forged Dome Piston 4.310 in Bore Big Block Chevy (Set of 8) 1000686 55003 See Application Guide for Additional V202101 Size:Youth 12 1968 1968 GMC C25 AFC55000011862 See Application Guide for Additional FitmentsVehicle Applications: 2002 2017 Dodge Ram 1500 Quad Cab Pickup Vehicle not equipped with a Manual Transfer Case Shifter Vehicle has a Manual Transfer Case Shifter Vehicle has One carpet hook Vehicle has Two carpet hooks It wires inline on the coils 12 volt supply wire where it senses the current going through this wire and converts this information into a 12 volt output signal that most aftermarket tachometers use as a trigger signal