This cross sill is mounted across the frame under the wood for support. The bed strips are bolted to the cross sills giving the bed wood strength and rigidity and providing the surface to mount the bed to the truck frame. Each sill has pre-punched holes in the steel brace with the original bolt pattern for your truck.
Applications: 1955-59 2nd series GM Stepside truck:⁕ Some 2nd Series 1955-59 short bed stepside beds originally had a 3rd Cross Sill that was different from the others. The outer end of this sill is formed upward to give clearance under the sill and outward from the frame. Your truck suspension may or may not require this sill.
Confused about wood bed parts terminology and what parts you might need to add or replace a wood bed? Click the link below to find the answers:
OER® was established in the early 1980's to manufacture original equipment reproductions where every part is meticulously reproduced to exact factory specifications. All OER® parts are reverse engineered or manufactured using original blueprints when available to ensure the closest possible reproduction available on the market. When available, original factory tooling is utilized to insure complete originality. Our mission is to supply the highest quality parts available for the enthusiast and serious restorer. Whether you're a serious restorer, or just someone who wants a replacement part for your classic vehicle, OER® is the source for the finest quality parts on the market. Today, OER® is the most recognized brand in automotive restoration parts. Choose OER® for all your restoration needs.
Many OER® products are officially licensed by General Motors and the Chrysler Group ensuring the quality and authenticity of these products. The GM Restoration Parts logo and the MOPAR Authentic Restoration Product logo are the true signs of quality. OER® is licensed by GM and the Chrysler Group as an official restoration parts manufacturer.
| Make | Model | Years |
| Chevrolet | 3100 | 1959 |
| Chevrolet | 3B | 1959 |
| Chevrolet | 3C | 1959 |
| Chevrolet | 3D | 1959 |
| Chevrolet | 3E | 1959 |
| Chevrolet | 3F | 1959 |
| Chevrolet | 3G | 1959 |
| Chevrolet | Sedan Delivery | 1955 - 1959 |
| Chevrolet | Suburban | 1955 - 1959 |
| Chevrolet | Truck | 1955 - 1958 |
| GMC | 100-22 | 1955 |
| GMC | 100 | 1955 - 1959 |
| GMC | 150-22 | 1955 |
| GMC | 150 | 1955 - 1959 |
| GMC | 250-22 | 1955 |
| GMC | 250 | 1955 - 1959 |
| GMC | 280-22 | 1955 |
| GMC | 300 | 1955 - 1959 |
| GMC | 350-8 | 1955 - 1959 |
| GMC | 370 | 1955 - 1959 |
| GMC | F350 | 1955 - 1959 |
| GMC | F370 | 1955 - 1959 |
| GMC | FM340 | 1955 - 1959 |
| GMC | FM350 | 1955 - 1959 |
| GMC | M300 | 1955 - 1959 |
| GMC | M340 | 1955 - 1956 |
| GMC | PM150 | 1955 - 1959 |
| GMC | PM151 | 1955 - 1959 |
| GMC | PM152 | 1955 - 1959 |
| GMC | PM153 | 1955 - 1959 |
| GMC | PM250 | 1955 - 1959 |
| GMC | PM251 | 1956 - 1959 |
| GMC | PM252 | 1955 - 1958 |
| GMC | PM253 | 1955 - 1958 |
| GMC | S300 | 1955 - 1959 |
| GMC | S370 | 1955 - 1959 |
| GMC | Suburban | 1955 - 1959 |
| GMC | Truck | 1955 - 1959 |
