0856-263 This mid cross sill fits:
1999-2006 Chevrolet Silverado fleetside
1999-2006 GMC Sierra fleetside
Measurement 49x4x2
Weight 7lb
This is the bed floor cross sill that is between the wheel tubs- a 5.5' bed and 6' bed use one of these and the longbed uses two
KeyParts was founded in 1992 by Tom Foster, as Fit-Rite Body Parts, in New Brunswick, NJ with the idea of bringing better rust repair panels to a market short on quality options. Tom quickly developed a loyal customer base that was happy to be able to offer their customers a product that would reflect well on them and allow body shops to make quality repairs easily.
Fast forward 28 years, a few warehouses later, and “Key Parts, Inc.” has become the gold standard in rust repair. We offer over 4000 individual part numbers to help correctly repair trucks, cars, SUVs from 1947-Current.
| Make | Model | Years | Fitment Notes |
| Chevrolet | Silverado | 1999 | FLEETSIDE |
| GMC | Sierra 1500 HD | 2001 - 2006 | SIERRA FLEETSIDE |
| GMC | Sierra 1500 | 1999 - 2006 | SIERRA FLEETSIDE |
| GMC | Sierra 2500 HD | 2001 - 2006 | SIERRA FLEETSIDE |
| GMC | Sierra 2500 | 1999 - 2004 | SIERRA FLEETSIDE |
| GMC | Sierra 3500 | 2001 - 2006 | SIERRA FLEETSIDE |
