Enhance the performance of your classic 1966 Buick Fullsize or Riviera with our top-of-the-line Spark Plug Wire Sets. Designed specifically for the 401 and 425 cubic inch engines, these reproduction spark plug wires not only restore your vehicle's authenticity but also improve engine efficiency and ignition performance. Unlike alternatives on the market, our wire sets feature premium materials that resist heat and wear, ensuring longevity and reliable performance.