Original GM 1968 through 1975 Corvette transmission tunnel insulation in new, unused condition. GM part #3912670. Correct for 1968 1969 1970 1971 1972 1973 1974 and 1975 Corvette. Foil and fiberglass underbody shifter tunnel insulator shield helps reflect heat and insulate the floor pan from transmission and engine heat. NEW OLD STOCK! Long discontinued by GM. $350. Will ship!