Detroit Axle - Complete Power Steering Gear Box Assembly [33-Spline Selector Shaft] - for Chevrolet Silverado, GMC Sierra, Hummer H2 Trucks Made in Detroit, USA - Lifetime Warranty Guarantee 33 Spline Selector Shaft 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