1-Q-66 date coded spark plug wires V8 66 Oldsmobile 442 Cutlass 88 330 425 olds

They will look, fit and perform exactly as original. Our G.M. reproduction sets are also date-coded (1st or 3rd quarter). Research has shown that most cars had spark plug wires installed that were dated from 1 to 4 quarters prior to the build date of the car.