PartsW 12 Pc Steering & Suspension Kit for Cadillac Chevrolet GMC Inner & Outer Tie Rod Ends Idler & Pitman Arms Lower Ball Joints Sway Bar End Links Upper Control Arms & Ball Joints Assembly For vehicles with 4 Groove Pitman Arm / This Kit is design for Silverado & Sierra 1500/1500 Classic with Power Steering Gear Box Only Control Arms Come Pre-Assembled With Ball Joints & Bushings / Replacement improves handling Advanced corrosion protection against the harshest conditions / Precision-made performance and additional strength Designed with PREMIUM quality materials for exceptional performance, reliability and peace of mind Dust boot is re-installed and permanently attached to reduce contamination, and increase durability and service life