Cardone 52-7251 Remanufactured Hydraulic Power Brake Booster - No Master Cylinder - Black (Renewed) | Compatible with [Vehicle Models] | Perfect for Brake System Repairs & Upgrades" （注：请将[Vehicle Models]替换为实际适用的具体车型）

Comes as pictured, nothing in instructions on how you have to pull the front push rod & retainers out of your old unit "MC side" & must install them into the replacement unit, needlenose work good for this, you must pull the star shape retainer out on an angle after you pull the rod " careful not to bend it", then snap the rod into the plastic round retainer in deeper in the unit to remove it, also you must pull your old mounting plate, if you remove the mounting bolts by pressing or tapping them out a big crescent wrench, channel locks or pipe wrench will remove the big nut in the rear of the unit so you can swap the mounting plate to the new unit..other then some guess work, it works great & at a good price.