To identify a Dee Zee Rough Step installation, separate the long step board from the brackets that attach it to the vehicle. The steel and aluminum boards are available in different cab-length groups, and bracket kits have their own model numbers and application restrictions. A board's appearance does not identify the mounting hardware.
Identify the board separately from its brackets
Rough Step boards are offered with black powder-coated steel or aluminum construction. Material is identified by the exact MPN suffix.
Regular, extended and crew-cab/van lengths are different board groups. Do not infer the correct length from truck brand alone.
Cradle and rocker-panel brackets are specific to the supported vehicle configuration and may require drilling.
For replacement, record the installed board's model number and inspect the existing mounts for rust, bending or damage.
Rough Step board part numbers by cab length
| MPN | Board length group | Material | Installation |
|---|---|---|---|
| DZ15301A | Regular cab | Aluminum | Depends on bracket application |
| DZ15301S | Regular cab | Steel | Depends on bracket application |
| DZ15311A | Extended cab | Aluminum | Depends on bracket application |
| DZ15311S | Extended cab | Steel | Depends on bracket application |
| DZ15321A | Crew cab / van | Aluminum | Depends on bracket application |
| DZ15321S | Crew cab / van | Steel | Depends on bracket application |
The boards above are black powder-coated, stationary and non-lighted. Mounting brackets are sold separately and must match the actual truck or van.
Rough Step bracket kits by manufacturer number
The bracket number matters even when the step board is visually the same. Some applications are no-drill while others specify drilling.
| Bracket MPN | Vehicle group | Mount | Drilling |
|---|---|---|---|
| DZ15315 | Selected Silverado / Sierra | Cradle brackets | No drilling listed |
| DZ15316 | Selected Express / Savana | Cradle brackets | No drilling listed |
| DZ15324 | Selected E-Series / Econoline | Cradle brackets | Drilling required |
| DZ15327 | Selected Ford F-150 | Cradle brackets | No drilling listed |
| DZ15336 | Selected Ram | Cradle brackets | No drilling listed |
Confirm the mounting points
Compare the bracket position, factory body-mount or rocker-panel points, existing fasteners and step-board profile. Check the model year, cab size and any factory step equipment.
The board and mounting kit are separate products. Confirm their approved pairing from Dee Zee's current application guide or kit instructions. This comparison does not establish that every board works with every bracket number.
Find the exact Rough Step MPN
Open each product listing for current details and availability.
Dee Zee DZ15301A
Regular-cab aluminum Rough Step board; separate vehicle-specific brackets required.
Check MPN and availability
Dee Zee DZ15301S
Steel alternative for regular-cab-length running board requirements.
Check MPN and availability
Dee Zee DZ15311A
Longer aluminum board intended for compatible extended-cab applications.
Check MPN and availability
Dee Zee DZ15311S
Extended-cab steel Rough Step; confirm exact bracket fit and drilling requirement.
Check MPN and availability
Dee Zee DZ15321A
Aluminum Rough Step intended for a compatible crew-cab or van installation.
Check MPN and availability
Dee Zee DZ15321S
Steel crew-cab/van-length step board; brackets ordered separately.
Check MPN and availability
Dee Zee DZ15315
Cradle bracket kit with model-specific GM truck and year restrictions; check manufacturer fitment.
Check MPN and availability
Dee Zee DZ15316
Bracket kit for specified Express/Savana model years; check exact body style.
Check MPN and availability
Dee Zee DZ15324
Ford van cradle bracket kit; drilling is specified for its catalog application.
Check MPN and availability
Dee Zee DZ15327
Bracket kit associated with specified F-150 applications; verify model-year details.
Check MPN and availability
Dee Zee DZ15336
Cradle mounting hardware for specified Ram models and years, not a universal bracket set.
Check MPN and availabilityOther truck accessory references
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