Upgrade your classic Cadillac's performance with our premium 1978 Spark Plug Wire Sets. Designed specifically for the Fleetwood, Seville, Deville, and El Dorado models, these reproduction wires provide reliable ignition and electrical connectivity. Unlike generic alternatives, our wire sets are tailored for optimal fit and functionality, ensuring your vintage beauty runs like it was meant to. Don’t compromise on quality—bring back that exhilarating drive with new spark plug wires that meet the demands of your Oldsmobile 350 C.I. engine.