PartSmith Co. supplies the (Step-Down Black) Running Board Nerf Bar For 15+ Ford F-150/17+ F-250 F-350 Super Duty [Extended Cab] to drivers, shops and fleets across the USA.
![(Step-Down Black) Running Board Nerf Bar For 15+ Ford F-150/17+ F-250 F-350 Super Duty [Extended Cab]](https://partsmithco.com/wp-content/uploads/2026/07/XUR-STEPB-G222-008.jpg)
Cab and bed configuration decide fitment, and a crew cab part will not serve an extended cab. Lay out every bracket and fastener before starting the installation.
Ordering the step-down black takes a minute and the confirmation reaches you straight away.
Our team knows the step-down black well, so ask if anything about the specification is unclear.
Stock of the step-down black is live on this page rather than estimated.
What you are buying
- Finish: Black
- Category: Running Boards/Steps
- Price: $346.70 with free shipping over $99
- Availability: in stock, dispatched from the USA
Message us the vehicle details and we will confirm compatibility, including anything unusual about your build.
See also: Running Boards & Towing · 87″ Black/6″ Oval Tube Running Board Nerf Step Bar 10387 For 22+ Toyota Tundra CrewMax Cab (XK70) · 87″ Chrome/5″ Oval Tube Running Board Nerf Step Bar 10287C For 22+ Toyota Tundra CrewMax Cab (XK70) · full catalog
Delivery estimates appear at checkout for your address, with no padding added to the carriage price.
For neutral background on this kind of maintenance, see the Car Care Council maintenance tips.
Frequently asked questions
Is fitment guaranteed on this listing?
Share your vehicle details with our team and we cross reference this listing before dispatch. Anything doubtful gets a message from us rather than a shipment.
What are the shipping times?
Most orders dispatch within one business day. You receive tracking by email the moment the parcel is handed to the carrier.
What if it does not fit?
Parts are covered against defects for the period stated on this page, and non defect returns follow our standard returns window.
How do you verify this part?
Boards and towing gear are verified against your cab and bed configuration before dispatch.
![(Straight Design Metal) Running Board Nerf Bar For 99-14 Chevrolet Silverado/GMC Sierra GMT800 GMT900 [Crew Cab]](https://partsmithco.com/wp-content/uploads/2026/07/XUR-STEPB-4-886-SS-300x300.jpg)
![(Straight Design Metal) Running Board Nerf Bar For 15+ Ford F-150/17+ F-250 F-350 Super Duty [Extended Cab]](https://partsmithco.com/wp-content/uploads/2026/07/STEPB-4-887-SS_1-300x300.jpg)
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