This is a high-quality spark plug wire set compatible with select Cadillac, Chevrolet, and GMC models. You can verify its fitment by using OE part number 19431551 for an exact match. It is an OEM product designed, engineered, and tested to GM's rigorous standards, guaranteeing reliable quality. Built to handle high-voltage transfer, it can deliver high-voltage pulses smoothly and ensure consistent ignition as well as smooth engine operation. Crafted with premium materials, it offers excellent conductivity, heat resistance, and wear protection, making it durable and long-lasting in performance. It is a complete set of 8 spark plug wires, with a precision fit for quick and hassle-free installation.