Detroit Axle Complete Power Steering Rack & Pinion Assembly - for Jaguar XJ-Series With-14mm Inner Tie Rod Threads To Activate your Lifetime Warranty; you must send in your core unit. Call us when you order to get a return shipping label for your old unit. New Oil and Lip Seals installed to ensure quality performance, Hydraulically Pressure Tested to Ensure Internal By-Pass for Both High & Low Pressure Tie Rod Load, Road Simulated for Proper Functioning