Upgrade your classic 1977 Buick Skylark, Special, or Gran Sport with our high-quality Oil Pressure Sender Extension Wire Harness. Designed specifically for seamless compatibility with your vehicle, this extension wire enhances the connection between the engine harness and oil pressure sending unit, ensuring reliable performance and accurate gauge readings. Unlike generic options, our product is tailored to fit your specific model, making installation a breeze and extending the life of your components.