This is a VINTAGE, ORIGINAL, American Made, New Old Stock (N.O.S.) Spark Plug Wire Grommet Holder
NEVER BEEN ON A CAR!!
p/n 3719963 on package
Per Chevrolet parts books, fits:
1956-1967 Chevrolet Corvette models (exc. 396 or 427 engines)
PARTS PACKAGE NOT included in purchase.