Firewall Grommet For Oldsmobile 88 1950-1957, Deluxe 88 1951-1953 ; SM 40This firewall grommet, designed for classic cars like the 1939 1948 Buick and Cadillac models and 1950 1958 Oldsmobile models, fits a 1 inch hole and features an angled opening for the park brake cable. Crafted from advanced rubber compounds, it resists chemicals, sunlight, and ozone, ensuring long lasting durability. Its sleek black finish blends seamlessly with your vehicle's firewall, providing a clean and professional look while effectively