For the 1954 Buick Century, Roadmaster, and Special cars, this tail-light housing base is designed with precision to ensure a perfect fit. Measuring 3" I.D. and 3-3/4" O.D., this thick pad is crafted to provide a secure and durable seal for your tail-light assembly, with four required per car. Made from high-quality compounds, it offers excellent chemical and UV resistance, ensuring it withstands harsh conditions and maintains its integrity for years. This part not only enhances the functionality of your tail-light but also contributes to the overall polished look of your classic Buick. Backed by Metro Moulded Parts' Platinum Warranty, you can trust this product to deliver long-lasting performance with a full 30-year coverage.