Overview
This is a Boss Pocket Style fender flare set for the 2015 to 2018 GMC Sierra 2500 HD and 3500 HD. The four-piece set covers the front and rear and adds 3.25 inches of width and tire coverage. The Boss style uses surface-mounted stainless steel bolts for a bold look.
The flares are custom-designed for the GMC Sierra to complement oversized tires and high-clearance lift kits. The material is Dura-Flex 2000, a thick, warp-resistant plastic with a UV-protected OEM-style matte black finish that can be painted for a factory-custom look.
Key features
- Boss Pocket Style design with surface-mounted stainless steel bolts
- 3.25 inches of width and tire coverage
- Installs in minutes with only minimal drilling, per the manufacturer
- Dura-Flex 2000 that is made in the USA
- OEM-style matte black finish that is easy to paint
- UV protected to prevent chalking
Heavy-duty fit considerations
Heavy-duty trucks carry more weight and often run larger tires, so fender flares on these models work with the suspension and wheel geometry rather than just covering the body. Before fitting, check how far the tire extends past the fender at full turn and at full suspension compression. Clearance changes with tire size, load and any lift, so measure again after any change.
Surface-mounted bolts sit on the outside of the flare and need to be tightened evenly. Start all the fasteners by hand, then tighten in a cross pattern so the flare seats without bowing. Recheck the bolts after the first few drives, since flexing panels can settle.
- Compare tire diameter with the factory setup
- Check flare edges for cracks after rough use
- Keep spare fasteners and washers on hand
- Wash with mild soap to protect the finish
Specifications
| Brand | Bushwacker |
|---|---|
| Part number | 40968-02 |
| UPC | 90689117649 |
| Position | Front and rear |
| Width and tire coverage | 3.25 inches |
| Quantity | Set of 4 |
| Fit type | Direct fit |
| Material | Dura-Flex 2000 |
| Finish | OEM matte black, paintable |
| Model years | 2015 to 2018 GMC Sierra 2500 HD and 3500 HD |
Vehicle fitment
Fits the 2015 to 2018 GMC Sierra 2500 HD and 3500 HD in the Base, Denali, SLE and SLT versions. The 1500 model is not covered, and HD trucks from 2011 to 2012 and 2014 need a different part number.
Confirm your vehicle’s year, model and trim before ordering.
Installation notes
The flares install in minutes with only minimal drilling. The surface-mounted bolts are the visible hardware, so check the mounting points on your truck before any holes are made.
What’s included
A set of four Boss Pocket Style flares for the front and rear positions.
