Pair of 2: KLINEO K51E012FL-R Replacement Shock Absorber - Front Driver and Passenger Side Suspension Set Using high-quality NOK oil seal,it has better sealing performance and longer life span. Using high-quality damping oil,it works well all day long under the temperature from 30 degrees below zero centigrade to 140 degree centigrade The factory has passed the certification of ISO/TS 16949. Product detection rate reaches 100%, which assures the reliability of product quality. The nitrogen in the shock absorber enhances the stability of the vehicle and extends its life span Limited Lifetime Warranty