A replacement Dee Zee tailgate protector should be matched by both its part number and the section of the tailgate it covers. Some models protect only the top cap, while another spans the larger tailgate panel and a separate polymer product provides a work surface. Record the original fasteners, finish and tailgate shape before choosing a replacement.
Recognize which portion is protected
A narrow aluminum piece that covers the upper tailgate edge. It does not cover the full tailgate panel.
A larger aluminum diamond-plate cover; check how it fits around the handle, seams and factory trim.
A polymer tailgate work surface with bolt-on mounting, rather than an adhesive metal cap.
Match finish and mounting style to the old part
Check the original MPN before replacing a silver diamond-plate cap with a black one, or vice versa.
| MPN | Coverage | Material | Finish | Mounting reference |
|---|---|---|---|---|
| DZ2121B | Tailgate-cap | Aluminum | Black powder-coated | Adhesive tape; check fitting instructions |
| DZ2145 | Tailgate-cap | Aluminum | Silver diamond plate | Adhesive tape; check fitting instructions |
| DZ2145B | Tailgate-cap | Aluminum | Black powder-coated | Adhesive tape; check fitting instructions |
| DZ4145 | Full-tailgate panel | Aluminum | Silver diamond plate | Confirm fasteners and truck-specific instructions |
| DZ284123 | Tailgate work surface | Polymer | Black | Bolt-on |
| DZ3127TB | Tailgate-cap | Aluminum | Black textured tread | Confirm vehicle-specific mounting instructions |
Inspect the mounting area before replacement
Inspect the factory cap or spoiler, old adhesive residue, original fasteners and clearance around the handle. Some aftermarket tailgate covers leave factory trim in place; others may require a particular mounting procedure.
Dee Zee DZ2145 is a cap-only silver diamond-plate product; DZ4145 covers a larger tailgate area. Do not assume they share the same vehicle fitment, dimensions or mounting hardware because their finishes are similar.
Compare the exact Dee Zee listings
Open the part number to inspect its details and current availability.
Dee Zee DZ2121B
Black aluminum cap protector with adhesive mounting. It does not replace a factory cap or cover a factory spoiler.
Check listing and availability
Dee Zee DZ2145
Silver diamond-plate cover for the cap area, distinct from full-panel DZ4145.
Check listing and availability
Dee Zee DZ2145B
Black-finished cap cover in the DZ2145 family, not a full-tailgate protector.
Check listing and availability
Dee Zee DZ4145
Full-tailgate diamond-plate panel; check the correct year, tailgate geometry and installation hardware.
Check listing and availability
Dee Zee DZ284123
Black polymer work board rather than a metal edge protector; designed as an added tailgate work surface.
Check listing and availability
Dee Zee DZ3127TB
Textured black aluminum cap protector; verify bed and tailgate fitment before selecting.
Check listing and availabilityMore tailgate hardware identification
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