Luverne MegaStep 6-1/2" x 78" Aluminum Running Boards Select Silverado Sierra Ext Cab Model 575078-581444 20-1/2" W DOT legal for gasoline

DOT legal for gasoline

welded together into a one-piece tub

The Model 96140-3-01 CabMax™ composite bulkhead is a single piece

2500 HD and 3500 HD extended cab (see application info to verify fitment)

3500 HD Crew Cab Model 415088-401445

Luverne MegaStep 6-1/2" x 78" Aluminum Running Boards Select Silverado Sierra Ext Cab Model 575078-581444 20-1/2" W DOT legal for gasolineLUVERNE MegaStep 78 Inch Premium Non Skid Aluminum Running Boards, Select Chevrolet Silverado, GMC Sierra 1500, 2500, 3500 HD Extended Cab Model 575078 581444 LUVERNE MegaStep 6 1 2" running boards are the ultimate combination of style and functionality. They have 5" wide treads that extend the full length of the side steps, and they feature a strong, lightweight aluminum core with a stainless steel trim for a bright, clean accent. MegaStep running