Vehicle Fitment: 00-05 Buick LeSabre; 97-05 Buick Park Avenue; 95-99 Buick Riviera; 00-05 Cadillac DeVille; 98-04 Cadillac Seville; 95-03 Oldsmobile Aurora; 00-04 Pontiac Bonneville Specifications: Stroke (in): 9.87, Extended Length (in): 24.54, Upper Mount Code: S15, Lower Mount Code: BP31, Collapsed Length (in): 14.66 Interchange Part Number: 990002, 2701-239525, JHS4254S, MA822, 729810, 49255, 88955458, 88946635, 88955457, 19324431, 19299843, 88955460, 88955461, 030 980, 504-547, 504-501, SR4116 Product Feature: Adjustable air pressure allows the user to tailor ride height and confort base on load weight. Fully adjustable to suit, changing load requeriments, offering up to 1,100 lbs of leveing capacity Installation & Durability: Easy to install and designed for long lasting performance in towing, hauling and classic / historic vehicle applications