Genuine Reliabilt remanufactured Detroit Diesel camshaft assembly, part number R23527029. Fits Series 50 8.5L engines. NOS (new old stock) condition. No core charge or return required. Price is firm as listed unless “offers” enabled. Unsolicited discount requests will be ignored; repeated messaging may result in blocking. Honest mistake or fitment question? Message me first, happy to work it out!