OE Quality
60-Day Returns

Dorman 999-995 Truck Bed Floor Support
Reliable Truck Bed Floor Support for Chevrolet and GMC Trucks
The Dorman 999-995 truck bed floor support provides essential reinforcement for your Chevrolet Silverado and GMC Sierra truck beds. Designed specifically for heavy-duty use, this replacement part helps maintain the structural integrity of your truck bed floor.
- Includes 4 bed crossmembers for comprehensive floor support
- Comes with 8 M6 bolts and 8 M12 bolts for secure installation
- Compatible with Chevrolet Silverado 1500, 2500 HD, 3500 HD and GMC Sierra 1500 models
- Durable construction engineered to withstand heavy loads and daily wear
Durable Construction and Complete Hardware Package
The Dorman 999-995 truck bed floor support features four robust bed crossmembers designed to reinforce the truck bed floor, preventing sagging and damage over time. This set includes both M6 and M12 bolts, ensuring a secure and proper fit during installation. Specifically engineered for Chevrolet Silverado 1500, 2500 HD, 3500 HD, and GMC Sierra 1500 trucks, this part maintains the original equipment specifications for reliable performance.
Common Applications and Problem Resolution
- Replaces worn or damaged truck bed floor supports to restore bed stability
- Prevents bed floor sagging caused by heavy cargo loads
- Addresses rust or corrosion issues affecting original crossmembers
- Supports truck bed integrity after collision or impact damage
- Improves overall load distribution across the truck bed floor
Installation Notes and Tips
Installation of the Dorman 999-995 truck bed floor support requires basic mechanical skills and appropriate tools for bolt tightening. Ensure all old crossmembers and hardware are fully removed before fitting the new parts. Use the included M6 and M12 bolts to secure each crossmember firmly to the truck bed frame. Verify alignment and torque specifications according to manufacturer guidelines for optimal results.
Quality Assurance and Warranty Information
Dorman parts are manufactured to meet or exceed OEM standards, providing dependable quality and fitment. The 999-995 truck bed floor support undergoes rigorous testing to ensure durability and performance under demanding conditions. Please refer to Dorman's official warranty policy for specific coverage details.
| Brand | Dorman |
| Part Number | 999-995 |
| Package Contents | 4 bed crossmembers; 8 m6 bolts; 8 m12 bolts |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Bed Type | Bed Length | Position | Notes |
|---|---|---|---|---|---|---|
| 2014 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2014 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2014 | Chevrolet | Silverado 3500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2013 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2013 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2013 | Chevrolet | Silverado 3500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2013 | GMC | Sierra 1500 | Fleetside | 5' 9" Foot Bed | N/A | Built in Mexico |
| 2012 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2012 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2012 | Chevrolet | Silverado 3500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2011 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2011 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2011 | Chevrolet | Silverado 3500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2011 | GMC | Sierra 1500 | Fleetside | 5' 9" Foot Bed | N/A | Built in Mexico |
| 2010 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2010 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2009 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2009 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2008 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2008 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A | |
| 2007 | Chevrolet | Silverado 1500 | Fleetside | 5' 9" Foot Bed | N/A | |
| 2007 | Chevrolet | Silverado 2500 HD | Fleetside | 6' 6" Foot Bed | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.