2020 GMC Sierra 3500 HD Westin Parts

Choose your Submodel for your 2020 GMC Sierra 3500 HD


Showing 1 - 10 of 125 products
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Westin
  • Mount Kit Included; Black Powdercoat Mild Steel
  • PRO TRAXX 6 Oval Nerf Step Bars; Mount Kit Included; Black Powdercoat Mild Steel;
  • PRO TRAXX 6 Oval Nerf Step Bars
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
    • Tube Shape: Oval
  • Features:
    • Straight Tube Design
    • Fully Welded Domed Ends
    • Injection Molded Polymer Step Pad
    • Injection Molded Bracket Covers Includes On Some Apps
    • Bolt On Installation
    • No Drilling Required On Most Apps
    • 3 Year Warranty
  • Westin PRO TRAXX 6 for full-sized trucks are cab-length steps for ideal functionality and cab access. They feature extra heavy-duty bold step pads and a unique oval tube shape in a straight tube design. Applications are vehicle specific bolt-on, no-drill and rocker panel mounted. Available in polished stainless steel, backed by a lifetime warranty, and black powder coated mild steel, backed by a 3 year warranty.

Additional Fitment Information:
Vehicle Block CC Engine Sub Model Body CID
2020 - GMC Sierra 3500 HD V 6571 8 Cyl 6.6L SLE Extended Cab Pickup 401

Westin
  • Black
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars; Black;
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
    • Tube Shape: Oval
  • Features:
    • 30 Degree Factory Style Bends At Each End Of Tube
    • Fully Welded Domed Ends
    • Injection Molded Polymer Step Pad
    • Injection Molded Bracket Covers Includes On Some Apps
    • 5 in. Wide Step Area With Westin Logo
    • Bolt On Installation
    • No Drilling Required On Most Apps
    • Lifetime Limited Warranty
  • Westin PRO TRAXX 5 W2W Steps feature a heavy-duty step pad that provides a wider and more secure step area. Featuring 30 degree factory style bends that have seamless domed ends without end-caps or exposed bolt heads. Applications are no-drill, which makes installation easy!

Additional Fitment Information:
Vehicle Bed Length Sub Model Body
2020 - GMC Sierra 3500 HD 82.2 AT4 Crew Cab Pickup

Westin
  • Black Black
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars; Black;
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
    • Tube Shape: Oval
  • Features:
    • 30 Degree Factory Style Bends At Each End Of Tube
    • Fully Welded Domed Ends
    • Injection Molded Polymer Step Pad
    • Injection Molded Bracket Covers Includes On Some Apps
    • 5 in. Wide Step Area With Westin Logo
    • Bolt On Installation
    • No Drilling Required On Most Apps
    • Lifetime Limited Warranty
  • Westin PRO TRAXX 5 W2W Steps feature a heavy-duty step pad that provides a wider and more secure step area. Featuring 30 degree factory style bends that have seamless domed ends without end-caps or exposed bolt heads. Applications are no-drill, which makes installation easy!

Additional Fitment Information:
Vehicle Bed Length
2020 - GMC Sierra 3500 HD 82.2

Westin
  • Black Black
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars; Black;
  • PRO TRAXX 5 Oval Wheel to Wheel Nerf Step Bars
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
    • Tube Shape: Oval
  • Features:
    • 30 Degree Factory Style Bends At Each End Of Tube
    • Fully Welded Domed Ends
    • Injection Molded Polymer Step Pad
    • Injection Molded Bracket Covers Includes On Some Apps
    • 5 in. Wide Step Area With Westin Logo
    • Bolt On Installation
    • No Drilling Required On Most Apps
    • Lifetime Limited Warranty
  • Westin PRO TRAXX 5 W2W Steps feature a heavy-duty step pad that provides a wider and more secure step area. Featuring 30 degree factory style bends that have seamless domed ends without end-caps or exposed bolt heads. Applications are no-drill, which makes installation easy!

Additional Fitment Information:
Vehicle Bed Length Sub Model
2020 - GMC Sierra 3500 HD 98.2 SLE

Westin
  • Steel; Textured Black Textured Black
  • HDX Drop Wheel to Wheel Nerf Step Bars; Steel; Textured Black;
  • HDX Drop Wheel to Wheel Nerf Step Bars
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
    • Tube Shape: Square
  • Features:
    • Stylish Wheel To Wheel Length Step Bars
    • Die Stamped Stainless Steel Step Areas For Maximum Traction
    • Two More Inches Of Toe/Heel Step Area Than Competitors
    • Includes A Third Step For Easy Truck Bed Access
    • Rear Step Is Custom Sized For Each Vehicle Application
    • Removable Step Plates For Easy Cleaning
    • Fits Tight To Rocker Panel For A Solid Fit And Rugged Look
    • Solid 1-Piece Construction
    • Bolt-On Installation
    • No Drilling Required On Most Applications
    • Includes Exclusive Isolator Bracket/Mount Kit
    • 3 Year Warranty
  • Westins HDX Drop Wheel-to-Wheel Nerf Step Bars feature a notched bar design with a 3rd step location for easy bed access. They provide strong traction with over 2 inches more of toe/heel step area than our Westin's HDX Drop W2W Nerf Step Bars include an added 3rd step location for easier bed area and cargo access. HDX also boasts more than 2 inches of added toe/heel step area which far exceeds all other competitive brands. HDX's notched bar design construction results in a reliable long lasting Bar, with a solid fit and a rugged look. The added length of HDX Drop Wheel-to-wheel Nerf Step Bars provides users with better cab access and better footing and traction for both drivers and passengers. Product includes mount kit and is offered in a variety of vehicle specific applications. Bolt-on installation so no drilling required. Mount kit included. Westin's exclusive Isolator Bracket supports the step bar past the truck cab, a feature that competitors do not offer. Without an Isolator Bracket, the step area that extends past the vehicle is left unsupported. Our unique design provides extra bed support without resulting in annoying creaking sounds.

Additional Fitment Information:
Vehicle Bed Length
2020 - GMC Sierra 3500 HD 98.2

Westin
  • Black Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately Black~Requires Installation Kit 27-2255
  • Sure-Grip Running Boards; Black Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;
  • Sure-Grip Running Boards
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
  • Features:
    • Vehicle Specific Mount Kit Required
    • Sold Separately
    • Corrosion Resistant Extruded Aluminum Board
    • Slip Resistant Textured Step Surface
    • Injection Molded Polymer End Caps
    • Rocker Panel Gap Strip Included For Finished Look
    • Optional Light Kit Available PN[27-6000]
  • Extruded aluminum. Slip resistant rubber step area. Molded end caps add unique style. Cradle mounted boards. 5 year warranty.

Additional Fitment Information:
Vehicle Sub Model Body
2020 - GMC Sierra 3500 HD SLE Extended Cab Pickup

Westin
  • Black Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;Requires Running Board Mount Kit PN[27-2255]
  • Sure-Grip Running Boards; Black Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;
  • Sure-Grip Running Boards
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
  • Features:
    • Vehicle Specific Mount Kit Required
    • Sold Separately
    • Corrosion Resistant Extruded Aluminum Board
    • Slip Resistant Textured Step Surface
    • Injection Molded Polymer End Caps
    • Rocker Panel Gap Strip Included For Finished Look
    • Optional Light Kit Available PN[27-6000]
  • Extruded aluminum. Slip resistant rubber step area. Molded end caps add unique style. Cradle mounted boards. 5 year warranty.

Additional Fitment Information:
Vehicle Sub Model Body
2020 - GMC Sierra 3500 HD SLE Extended Cab Pickup

Westin
  • Brushed Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;Requires Running Board Mount Kit PN[27-2255]
  • Sure-Grip Running Boards; Brushed Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;
  • Sure-Grip Running Boards
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
  • Features:
    • Vehicle Specific Mount Kit Required
    • Sold Separately
    • Corrosion Resistant Extruded Aluminum Board
    • Slip Resistant Textured Step Surface
    • Injection Molded Polymer End Caps
    • Rocker Panel Gap Strip Included For Finished Look
    • Optional Light Kit Available PN[27-6000]
  • Extruded aluminum. Slip resistant rubber step area. Molded end caps add unique style. Cradle mounted boards. 5 year warranty.

Additional Fitment Information:
Vehicle Sub Model Body
2020 - GMC Sierra 3500 HD SLE Extended Cab Pickup

Westin
  • Brushed Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately Brushed~Requires Installation Kit 27-2255
  • Sure-Grip Running Boards; Brushed Aluminum; 79 in. Length; Does Not Include Mount Kit; Vehicle Specific Mount Kit Must Be Purchased Separately;
  • Sure-Grip Running Boards
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
  • Features:
    • Vehicle Specific Mount Kit Required
    • Sold Separately
    • Corrosion Resistant Extruded Aluminum Board
    • Slip Resistant Textured Step Surface
    • Injection Molded Polymer End Caps
    • Rocker Panel Gap Strip Included For Finished Look
    • Optional Light Kit Available PN[27-6000]
  • Extruded aluminum. Slip resistant rubber step area. Molded end caps add unique style. Cradle mounted boards. 5 year warranty.

Additional Fitment Information:
Vehicle Sub Model Body
2020 - GMC Sierra 3500 HD SLE Extended Cab Pickup

Westin
  • Black; For Double Cab;Requires Running Board PN[27-6150] or PN[27-6155] or PN[27-6650]
  • Running Board Mount Kit; Black; For Double Cab;
  • Running Board Mount Kit
  • Product Attributes:
    • WARNING CA Proposition 65: Yes
    • WARNING CA Proposition 65 Message: Cancer And Birth Defect
  • Features:
    • Black Powder Coat Finish
    • E-Coated Steel
    • 3 Year Warranty
  • SG6 LED Running Boards are designed to be vehicle specific and require a mount kit (sold separately). Kit includes driver and passenger side e-coated steel mount brackets, complete with hardware and installation instruction sheet.

Additional Fitment Information:
Vehicle Body
2020 - GMC Sierra 3500 HD Crew Cab Pickup
Showing 1 - 10 of 125 products

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