FITMENT - Front Rear pair struts shock absorbers fit for 1999 2000 2001 2002 2003 2004 2005 2006 for Chevrolet Silverado 1500,2007 for Chevrolet Silverado 1500 Classic,1999 2000 2001 2002 2003 2004 2005 2006 for GMC Sierra 1500,2007 for GMC Sierra 1500 Classic compatible with 344380 37149 344365 37150 struts STABILITY AND SAFETY - Twin tube shock body to protect shock action from rugged offroad work,accelerate frame and body vibration attenuation to improve vehicle ride comfort, Improve braking and steering issues and make driving more comfortable and safer BETTER DRIVING EXPERIENCE - High performance rubber bushes and top quality bump stop exclusive to ECCPP shock absorbers,providing you a better driving experience LONGER SERVICE LIFE - Steel rod is micro-polished with double chrome plate.High corrosion resistance and long service life.Brackets and mountings match O.E. BUYER NOTICE - Shock Absorbers only,not including springs or mounts.Please check the description and compatibility chart before your purchasing. We provide ONE YEAR WARRANTY for all our shock absorbers.Please contact us if you have any question regarding our this product