DTA 40194 Shocks Full Set (Pack of 4 pcs) Fits 1999-2006 Silverado 1500 4WD; Sierra 1500 4WD 1999-2006 Silverado 1500 4WD; Sierra 1500 4WD High corrosion resistance and long service life Teflon bonded piston seal to keep friction down and temperature cooler so that valving stays firmer Replaces Monroe # 37151 x2 37152 x2 2 years / 24000 miles limited product warranty