43-818 Ford F250SD, F350SD Front Leaf Spring 1999-2004 (2 Leaves) SRI No. 43-818 OEM No. YC3Z5310AN, YC355310APC Measurements (A):27 1/2" (B):28 1/8" (C): 4 7/8" Pack Thickness: 1 5/16", Spring Width: 3" Spring Capacity 2,630 lbs