Bilstein might be considered OEM replacement, but, they hold a secret that will cost you more money when you install... They do not inform customer that when you purchase front struts they only provide you with strut itself with top washer and nut. You are responsible for cost of (2) rubber grommets at a cost of $32.00 per strut ( Nissan parts for Titan Pro4X), Special order item no parts local. $139.00 per strut, plus $32.00 =$171.00 per Strut! All other manufactures supply struts with parts required to do job!