Ignite your classic Buick's performance with our top-quality Spark Plug Wire Sets, meticulously designed for 1966 Buick Fullsize and Riviera models featuring 401 and 425 cubic inch engines. Engineered to enhance spark delivery and optimize engine performance, these reproduction wires not only ensure reliability but also uphold the authenticity of your vintage vehicle. Experience improved combustion efficiency and a smoother running engine with these high-performance spark plug wire sets.