The Bilstein B6 Performance Series rear shock (24-245500) is a monotube damper for the Ram ProMaster 1500, 2500 and 3500 vans. The manufacturer presents the monotube layout as a way to keep damping consistent without fade, which is the main reason to pay more than for a generic replacement. Owners on user forums describe factory rear shocks leaking at low mileage, with one 2014 owner reporting a leak before 10,000 miles, so a like-for-like replacement is often needed anyway. Another owner who fitted B6 units to a 2014 van at about 90,000 miles described the change in ride as striking. For buyers searching for a ProMaster 2500 rear shock upgrade, a ProMaster 3500 monotube damper, or a rear shock for a camper conversion, this B6 is the Bilstein option with the most owner history behind it.
The manufacturer's fitment table lists 2014 through 2021 ProMaster 1500, 2500 and 3500 models, and published year ranges differ elsewhere, so confirm your van's model year before ordering. Owners on user forums report a straightforward bolt-in on a 2018 ProMaster 3500, though one owner warned that some aftermarket rear shocks with a conventional top bushing sat about a quarter inch off the frame, so check the upper mount before committing. The rear swap is a practical driveway job: owners say each side takes roughly 10 to 15 minutes, with Torx fasteners and a metric socket as a fallback. Owners also advise against stacking washers as spacers when thread engagement is limited, since a shock that loosens in service is a serious hazard.
The manufacturer's fitment table lists 2014 through 2021 ProMaster 1500, 2500 and 3500 vehicles. Year ranges vary across published sources, so confirm your van's model year and drivetrain with the manufacturer before ordering.
Owners on user forums report a direct fit on a 2018 ProMaster 3500. The factory top bushing sits nearly flush against the frame, and one owner found that aftermarket shocks with a conventional top bushing left about a quarter inch of gap. Check the upper mount fit before you commit to a brand, and avoid washer spacers that leave too few threads engaged.
Owners on user forums describe the rear shock replacement as a quick job, roughly 10 to 15 minutes per side. A Torx driver is the usual tool, and a metric socket can substitute if a Torx bit is not on hand.
Owners on user forums describe the rear swap as one of the easier suspension jobs on this van, typically 10 to 15 minutes per side with basic hand tools. Plan for a safe, level lift, and check the upper mount seating against the frame before you tighten anything, since the top bushing fit is the most common concern. The manufacturer's general Bilstein guidance is to leave rubber-mounted strut and damper fasteners until the suspension is loaded with the wheels on the ground, so do the final tightening at that stage. Torque values for this part were not confirmed in the manufacturer's material, so check the ProMaster service manual for the rear shock torque specs before final tightening.
