Parts are not normally available for rack and pinion assemblies. You must replace the unit with a remanufactured one. There are some suppliers of aftermarket replacement bellows boots, but those are just for keeping dirt and water out. If you pull either one back, you're going to find it is full of fluid. Once they fill up, the added pressure from the continuing leak is what forces the fluid out and onto the ground.
Friday, February 24th, 2012 AT 8:19 AM