Bilstein 5100 Gas Shock Front Dual Pair 99-04 F-250 SD 4-6" Quad Front Part Number 33-104645 Four front shocks for dual shock setup for vehicles w/4-6" front Lift Fits 2WD & 4WD vehicles All necessary washers, bushings, and nuts included. Factory shock mounting bolts are reused for installation. Bilstein's Limited Lifetime manufacturer's Warranty protects against defects and premature failure.