1947 - 51 GM Cross Sill (Front) w/Holes 1964 the strips are stamped with

the strips are stamped with square holes that accommodate carriage bolts

Bolt holes in the cross sill determine the placement of the bed strips and wood

The bed strips and bed-sides are bolted to the cross sill

The steel bed strips are coated with galvaneal to resist corrosion

1947 - 51 GM Cross Sill (Front) w/Holes 1964 the strips are stamped withThis heavy gauge steel part mounts across the frame under the wood for support. Bolt holes in the cross sill determine the placement of the bed strips and wood. The bed strips and bed sides are bolted to the cross sill and the wood is bolted to the frame through the cross sill by the bed to frame bolts. Cross sill is sold with holes and includes brackets. Made in USA. This is the front cross sill for 1947 51 GM trucks with a 9 board bed floor.