HomeBody > Truck BoxDorman 999-995 Truck Bed Floor Support
Part #: 999-995

Dorman 999-995 Truck Bed Floor Support

⚙️ 22 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$319.89Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Chevrolet and GMC, Sierra 1500, Silverado 1500, Silverado 2500 HD, and Silverado 3500 HD
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

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.

BrandDorman
Part Number999-995
Package Contents4 bed crossmembers; 8 m6 bolts; 8 m12 bolts

This part fits 22 vehicles. Search below:

YearMakeModelBed TypeBed LengthPositionNotes
2014ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2014ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2014ChevroletSilverado 3500 HDFleetside6' 6" Foot BedN/A
2013ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2013ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2013ChevroletSilverado 3500 HDFleetside6' 6" Foot BedN/A
2013GMCSierra 1500Fleetside5' 9" Foot BedN/ABuilt in Mexico
2012ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2012ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2012ChevroletSilverado 3500 HDFleetside6' 6" Foot BedN/A
2011ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2011ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2011ChevroletSilverado 3500 HDFleetside6' 6" Foot BedN/A
2011GMCSierra 1500Fleetside5' 9" Foot BedN/ABuilt in Mexico
2010ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2010ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2009ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2009ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2008ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2008ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/A
2007ChevroletSilverado 1500Fleetside5' 9" Foot BedN/A
2007ChevroletSilverado 2500 HDFleetside6' 6" Foot BedN/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:

15277405

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.