AIR LIFT 60742 1000 Series Rear Air Spring Kit https://www.amazon.com/dp/B000BTK8WA/ref=cm_sw_r_cp_api_i_DSCoFbXBY559V
Use this opportunity to upgrade the rear suspension. Old Pathfinder springs get saggy anyway under load. Remove the broken bump stops, enlarge the pass through hole for the bump stop bolt, and place these air bags inside the spring coils. I keep them at about 7psi for daily driving and Pathfinder rides better and carries load in the back without sagging.