The Bilstein B6 24-020770 is a rear shock absorber with a monotube, gas-pressure body, meant to replace a worn original on a stock-height first-generation Nissan Pathfinder. Bilstein presents the B6 as an upgrade on stock springs that adds firmer, more precise damping at OE ride height, so the car keeps its height and spring rates.
Against a stock or budget replacement, the case rests on damping control. The manufacturer states the monotube design uses a working piston about 63% larger than a twin-tube's, for sharper, more consistent damping. Each shock goes through long-term endurance, salt-spray and scratch testing, plus a functional check before delivery. Owners on user forums describe Bilsteins as a common choice for crawlers and racers, though one owner found the rear soft and hit the bump stops all the time under heavier use, so results depend on how the truck is driven.
Catalogs list this part for 1987–1995 Pathfinders, but trim and drivetrain entries differ, so confirm your VIN and suspension setup with the manufacturer before ordering, especially if the truck has electronic adjustable suspension. Keywords this fits: 1987 Pathfinder rear shock upgrade, B6 4600 rear monotube shock, stock height Pathfinder gas shock, Bilstein Pathfinder rear shock replacement.
The manufacturer states the B6 can be fitted on a single axle, such as the rear only, and is built to original equipment dimensions so it installs without modification. If you are replacing a shock from another brand, the manufacturer advises fitting shocks as a set.
Catalog details on this point are inconsistent, so the manufacturer should confirm compatibility before you order.
The manufacturer's installation guidance says shock work requires special tools and expert knowledge and recommends a qualified suspension specialist. Owners on user forums report doing rear swaps at home with the vehicle supported on jack stands.
Rear replacement is a moderate-difficulty job. Owners on user forums describe jacking the frame, placing jack stands, and removing the old units, with one owner reporting about two hours for the rears. The usual obstacle is a seized lower eye bolt; one owner had the shock eye break free in its mount, so have replacement hardware on hand. The manufacturer's general guidance calls for a chassis hoist, and for all mounting fasteners to be tightened securely before the suspension is loaded.
