Listings include "Bilstein Rear 0"-2-3/4" Suspension Lift Kit - BIL47-325593" and "Bilstein Front Suspension Kit - F4-SE5-C765-H0 - BILF4-...". Each product page states the manufacturer part number, the fitment range (year, make and model where applicable) and the capacity or size the part is rated to, so you can confirm the match against the component you are removing.
