Using a strut cap nut wrench tool or equivalent, install the self contained replacement cartridge. Install the jounce bumper. Using the strut mount plate wrench tool or equivalent, next install the jounce bumper retainer. Install strut mount bushing. If you need to you can use a strut extension rod or equivalent after bushing is partially installed and position strut shaft as required. Lubricate the bushing with a soap solution to ease installment. Use a torx bit and strut rod remover or installer tool or equivalents to install the strut shaft nut. Tighten it to specifications. Install strut mount cover, aligning scribe marks. Tighten the cover plate nuts to specifications.