View 9 Photos View 0 Videos Detroit Diesel Series 50 EGR Head Assembly R23529994 Reliabilt Reman NOS Newly Listed $2,000 USD Genuine Detroit Diesel Reliabilt reman/NOS Series 50 EGR Head Assembly.Part # R23529994 (factory sticker reads "EGR HEAD ASSEMBLY").Loaded with valves, springs, retainers, keepers, and... Quantity2ConditionRemanufacturedFits To EquipmentBus, Medium Duty Truck, Transit BusFits To Make(s)Detroit DieselFits To Model(s)Series 50 EGRWill Fit Year(s)1998+Part NumberR23529994Weight267lbs MLS Number14078505CategoryCylinder Heads Last Updated1/8/2026 LocationRidgetop, TN, US Sold ByPrivate Party (615) 310-___ SHOWNUMBERCall Seller Email Seller Save More Info