I noticed our van leaning/listing while parked the other day and a quick measure shows the OS rear shock is sagging 15mm more than the NS. The van's just hit 150k so it's hardly surprising.
However, when looking at replacements (I've been looking at Bilstein B4s) it seems there's a few lengths available. To make sure I get the right length, what's the easiest way of getting the OEM shock part number?
Van is a 2015 L2H3 4x4 350 125ps (remapped to 180bhp and converted to camper, should that make a difference).