2023 GMC Sierra 3500 HD UnderCover Parts
Image
Product
Price
- UX 2020-23 HD GM 6.9ft
- Matte Black Dually Bed
- 2020-2023 Chevrolet Silverado/GMC Sierra HD (2500/3500) 6.9ft Bed
- Ultra Flex Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: No
- Style: Hard Folding Cover
- Install Time: 15 Minutes
- Rails To Install: No
- Low Profile: No
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Made Of High Density Aircraft Grade Aluminum
- Never Having To Lift The Last Panel
- Premium Powder Coat Texture
- Under Panel Tough Carpet Like Finish
- Saddlebag Storage Made From Heavy Duty Commercial Grade Fabric
- Mounts Out Of The Way
- Allows You To Keep Your Bed Clean And Organized
- Dual Bed Rail Bed Lighting System
- Illuminates The Bed For Convenience Both Day And Night
- Shut Your Tailgate w/Ease
- A hard folding truck bed cover that comes with overwhelming new features, and is topped off with an alluring matte finish. The Ultra Flex is in a category of its own. From the irresistible outward appearance, to each component beneath the cover, the Ultra Flex has been carefully crafted to be the ultimate all-purpose truck bed cover. All-new features that accompany the Ultra Flex include an integrated luminous rail light system for enhanced night vision, and a dual action tailgate seal, allowing for easy operation and you to close the tailgate with the cover up or down. Multiple riding positions allow the user to ride with full access to their bed, and full weather protection is available if the cover is in the fully closed position. Ultra Flex has an Easy Clamp-on design application and can be installed and removed easily with our newly designed L-Rail's. What's more, the Ultra Flex is backed by a 5-year warranty, making it the most desirable folding cover on the market.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 82.2 |
- Triad 19-23 GM HD 6.9ft
- Matte Black Panels Dually Bed Will Not Work With UnderCover SwingCase
- 20-2023 Silverado/Sierra HD 6.9 Bed
- UnderCover Triad Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- Paintable: No
- WARNING CA Proposition 65 Message: Cancer And Reproductive
- Works w/Toolbox: No
- Front Opening: No
- Style: Hard Folding Cover
- Key Lockable: No
- Full Bed Access: Yes
- Rails To Install: No
- Low Profile: Yes
-
Features:
- Fashionable Matte Black Panels
- Easy On-Off Functionality
- Integrated Perimeter And Corner Seals
- Dual Hinge Seals
- The TRIAD by UnderCover is a hard-folding truck bed cover featuring matte black panels for a sleek and innovative addition to your truck bed. Integrated perimeter seals protect your truck bed from the elements, while aluminum panels enhance the security of your truck bed and support up to 600 lbs of evenly distributed weight. The TRIAD has 2 available riding positions in the fully closed and 2/3 open position for convenience to haul and manage most any cargo. The TRIAD is fashioned with easy-to-use tailgate clamps allowing quick access to the truck bed. The TRIAD hard-folding cover comes completely assembled to provide a quick and easy installation and backed by a 3-year warranty.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 82.2 |
- SC 20-23 GM 2500-3500
- Black Smooth; Passenger Side
- 2020-2023 Chevrolet Silverado/GMC Sierra HD (2500-3500 Passengers Side Black Smooth
- Swing Case Storage Box
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
-
Features:
- Works With All Tonneau Covers
- Holds Up To 75 lbs.
- Moisture Seal Keeps Contents Dry
- Lockable Lid
- Quick Release Latch
- Swings Out For Easy Tailgate Access
- SwingCase by UnderCover is the most innovative and versatile truck storage box ever made. Built to last from lightweight, high-impact ABS plastic; the tough, weatherproof, SwingCase is custom fitted for your truck. The SwingCase is affordable, too. In fact, you can purchase two SwingCases for less than the price of an old-fashioned truck bed box... and save a lot of space, too. Best of all, the SwingCase provides storage that is always within reach without sacrificing the use of your truck bed. Just simply pull the release lever and your gear swings out to you, no more reaching over or climbing into your truck bed. For work or play, go with SwingCase today.
Additional Fitment Information:
| Vehicle |
|---|
| 2023 - GMC Sierra 3500 HD |
- AX 2020-23 HD GM 8.2ft
- Black Textured Dually Bed
- 2020-2023 GM 2500/3500 HD 8.2ft Bed
- Armor Flex Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: No
- Style: Hard Folding Cover
- Install Time: 45 Minutes
- Rails To Install: No
- Low Profile: Yes
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Heavy Duty Panels
- Premium Grade LINE X Coating
- Dual Action Tailgate Seal
- Stylish Matte Black Appearance
- Low Profile Design
- Automatic Latching Panels
- Made In The USA
- 5 Year Warranty
- The new ArmorFlex hard folding cover is designed to protect your truck bed and its contents, while maintaining its strength, style and durability. Heavy-duty panels are coated with a LINE-X(R) specialty automotive coating designed to provide advanced protection from dents and scuffs, even in the most extreme environments. The dual-action tailgate seal offers universal tailgate operation, allowing you to close the tailgate with the last panel of the cover up or down. ArmorFlex is proudly made in the USA, and comes backed by a 5-year warranty.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 98.2 |
- UX 2020-23 HD GM 8.2ft
- Matte Black Dually Bed
- 2020-2023 GM 2500/3500 HD 8.2ft Bed
- Ultra Flex Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: No
- Style: Hard Folding Cover
- Install Time: 15 Minutes
- Rails To Install: No
- Low Profile: No
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Stylish Matte Black Finish
- Integrated Luminous Bed Rail Light
- Automatic Latching Panels
- Ultra Low Profile Design
- Dual Action Tailgate Seal For Easy Operation
- Made In The USA
- Carpeted Underpanels Provide A Finished OEM Look
- Weather Resistant
- 5 Year Warranty
- A hard folding truck bed cover that comes with overwhelming new features, and is topped off with an alluring matte finish. The Ultra Flex is in a category of its own. From the irresistible outward appearance, to each component beneath the cover, the Ultra Flex has been carefully crafted to be the ultimate all-purpose truck bed cover. All-new features that accompany the Ultra Flex include an integrated luminous rail light system for enhanced night vision, and a dual action tailgate seal, allowing for easy operation and you to close the tailgate with the cover up or down. Multiple riding positions allow the user to ride with full access to their bed, and full weather protection is available if the cover is in the fully closed position. Ultra Flex has an Easy Clamp-on design application and can be installed and removed easily with our newly designed L-Rail's. What's more, the Ultra Flex is backed by a 5-year warranty, making it the most desirable folding cover on the market.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 98.2 |
- AX 2020-23 HD GM 6.10ft
- Black Textured Dually Bed
- 2020-2023 Chevrolet Silverado/GMC Sierra HD (2500/3500) 6.10ft Bed
- Armor Flex Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: No
- Style: Hard Folding Cover
- Install Time: 45 Minutes
- Rails To Install: No
- Low Profile: Yes
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Heavy Duty Panels
- Premium Grade LINE X Coating
- Dual Action Tailgate Seal
- Stylish Matte Black Appearance
- Low Profile Design
- Automatic Latching Panels
- Made In The USA
- 5 Year Warranty
- The new ArmorFlex hard folding cover is designed to protect your truck bed and its contents, while maintaining its strength, style and durability. Heavy-duty panels are coated with a LINE-X(R) specialty automotive coating designed to provide advanced protection from dents and scuffs, even in the most extreme environments. The dual-action tailgate seal offers universal tailgate operation, allowing you to close the tailgate with the last panel of the cover up or down. ArmorFlex is proudly made in the USA, and comes backed by a 5-year warranty.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 82.2 |
- SC 20-23 GM 2500-3500
- Black Smooth; Driver Side
- 2020-2023 Chevrolet Silverado/GMC Sierra HD (2500-3500) Drivers Side Black Smooth
- Swing Case Storage Box
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
-
Features:
- Works With All Tonneau Covers
- Holds Up To 75 lbs.
- Moisture Seal Keeps Contents Dry
- Lockable Lid
- Quick Release Latch
- Swings Out For Easy Tailgate Access
- SwingCase by UnderCover is the most innovative and versatile truck storage box ever made. Built to last from lightweight, high-impact ABS plastic; the tough, weatherproof, SwingCase is custom fitted for your truck. The SwingCase is affordable, too. In fact, you can purchase two SwingCases for less than the price of an old-fashioned truck bed box... and save a lot of space, too. Best of all, the SwingCase provides storage that is always within reach without sacrificing the use of your truck bed. Just simply pull the release lever and your gear swings out to you, no more reaching over or climbing into your truck bed. For work or play, go with SwingCase today.
Additional Fitment Information:
| Vehicle |
|---|
| 2023 - GMC Sierra 3500 HD |
- FX 2020-23 HD GM 6.9ft
- Black Textured Dually Bed
- 2020-2023 Chevrolet Silverado/GMC Sierra HD (2500/3500) 6.9ft Bed
- FLEX Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: Yes
- Style: Hard Folding Cover
- Install Time: 15 Minutes
- Rails To Install: Yes
- Low Profile: Yes
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Ultra Low Profile Design
- Allows For Full Access To Your Bed
- Built In Prop Rods Secure The Cover
- Plastic Buckles And Straps Included
- Rubber Seals And Drain Tubes Channel Water Away
- Easy Clamp-On Design And 3 Year Warranty
- Introducing the next generation of folding covers -- the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile -- Ultra-low profile design rests inside the bed rails allowing for a very sleek look. Full Access -- Built in prop rods secure the cover allowing your truck to be driven with the cover fully open. Easy Removal -- Entire cover can be removed in seconds with no tools needed. Secure Design -- Plastic buckles and straps are included to secure the panels in the partially open position. FRP Composite Panels -- Lighter, stronger and higher dent resistance than aluminum. Weather Resistant -- Rubber seals and drain tubes channel water away from and out of the bed. Easy Clamp-on design. No other folding cover can match the Flex for versatility, security and function. Covered or uncovered, always an option with UnderCover.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 82.2 |
- FX 20-23 HD GM 8.2ft
- Black Textured Dually Bed
- 2020-2023 GM 2500/3500 HD 8.2ft Bed
- FLEX Tonneau Cover
- Product Attributes:
- WARNING CA Proposition 65: Yes
- WARNING CA Proposition 65 Message: Warning: Cancer And Reproductive Harm - Www.p65warnings.ca.gov.
- Front Opening: Yes
- Style: Hard Folding Cover
- Install Time: 15 Minutes
- Rails To Install: Yes
- Low Profile: Yes
- Actual Color: Black
- Paintable: No
- Works w/Toolbox: No
- Key Lockable: No
- Full Bed Access: Yes
-
Features:
- Ultra Low Profile Design
- Allows For Full Access To Your Bed
- Built In Prop Rods Secure The Cover
- Plastic Buckles And Straps Included
- Rubber Seals And Drain Tubes Channel Water Away
- Easy Clamp-On Design And 3 Year Warranty
- Introducing the next generation of folding covers -- the UnderCover Flex folding cover. Flex combines the best of both worlds, the security of a hard locking cover and convenience of a soft roll up cover. Constructed from the best materials available, Flex will withstand the abuse Mother Nature throws at it and keep coming back for more. Low Profile -- Ultra-low profile design rests inside the bed rails allowing for a very sleek look. Full Access -- Built in prop rods secure the cover allowing your truck to be driven with the cover fully open. Easy Removal -- Entire cover can be removed in seconds with no tools needed. Secure Design -- Plastic buckles and straps are included to secure the panels in the partially open position. FRP Composite Panels -- Lighter, stronger and higher dent resistance than aluminum. Weather Resistant -- Rubber seals and drain tubes channel water away from and out of the bed. Easy Clamp-on design. No other folding cover can match the Flex for versatility, security and function. Covered or uncovered, always an option with UnderCover.
Additional Fitment Information:
| Vehicle | Bed | Bed Length |
|---|---|---|
| 2023 - GMC Sierra 3500 HD | Fleetside | 98.2 |
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