Ultima | Rear Shock Absorber HD Gas | Nissan Pathfinder WD21 1985–2001 | 400439Ultima Rear Heavy Duty Gas Shock Absorber (Single) for Nissan Pathfinder WD21 19852001 This Ultima Rear Heavy Duty Shock Absorber (400439) is a powerful, gas charged component specifically engineered for the rear suspension of the first generation Nissan Pathfinder (WD21 Chassis), also known as the Terrano. Built with heavy duty components to withstand challenging 4WD conditions and varying load demands, this shock provides enhanced stability,