Longer Service Life: Higher power reserves and a longer service life even when pulling transporters and trailers or during frequent journeys with loads. Shock Stability: Optimum grip and enhanced lane stability in day to day and extreme situations. Precise Handling: High traction and more precise handling thanks to Bilstein gas-pressure technology. Monotube Design: These dampers offer application specific valve settings with a monotube design to bring out the best handling performance of a vehicle. Vehicle Compatibility: This fits your 1973-1981 Buick Century and 1977-1984 Buick Electra.