1958-59 Chevy/GMC Truck Fleetside Cross Sill, ea. Required 3 for short bed, 5 for long bed. Mounted across the frame under the wood for support.

1958-59 Chevy/GMC Truck Fleetside Cross Sill, ea. Req. 3 for Short Bed, 5 for Long Bed. Mounted Across the Frame Under the Wood for Support.

1955-59 Chevy/GMC Truck Stepside Bed Floor Rear Cross Sill, ea.

Restore the structural integrity and functionality of your 1955–1959 Chevrolet or GMC pickup with this high-quality rear cross sill. Designed for 1/2-ton and 3/4-ton stepside models, this component serves as the final cross sill closest to the...

1955 2nd-59 Chevy/GMC Truck Stepside Front or Center Cross Sill, ea. Required 3 for Shortbed, 4 for Longbed. (Mounts across the frame under the wood for support)

1955 2nd-59 Chevy/GMC Truck Stepside Front or Center Cross Sill, ea. Required 3 for Shortbed, 4 for Longbed. Mounts across the frame under the wood for support.

1954-55 1st Chevy/GMC 1/2 Ton Truck Stepside Rear Cross Sill, ea.

1954-55 1st Chevrolet/GMC Pickup Truck Rear Cross Sill, each.

1951-53 Chevy/GMC Truck 1/2 ton Rear Cross Sill, ea.

1951-53 Chevrolet/GMC Pickup Truck 1/2 ton Rear Cross Sill, each.

1947-50 Chevy/GMC Truck Stepside Front Cross Sill, ea. (Mounts Across Frame Under Wood for Support)

1947-50 Chevy/GMC Truck Stepside Front Cross Sill, ea. Mounts across the frame under the wood for support.