The Dëff Aluminum Fuel Cap Cover is CNC-machined from solid A6061 billet aluminum — the same alloy used in motorsport and aerospace components for its combination of machinability, corrosion resistance, and structural rigidity. Where the factory fuel cap surround is injection-molded plastic that dulls and scratches with age, the Dëff cover is carved from a single aluminum billet with defined edges and machined detail that reads as a genuine manufactured part, not a molded trim piece.
The top section incorporates Toray dry carbon fiber, adding a second material layer and a motorsport-influenced aesthetic detail without meaningful added weight. The anodized surface treatment provides oil and fuel-adjacent chemical resistance, preventing the color shift and surface oxidation that degrade bare aluminum in the filler neck environment. Installation is a clean overlay — no drilling, no permanent modification. The cover seats precisely over the factory fuel cap surround and bonds with high-strength, heat-treated double-sided tape.
Material: A6061 billet aluminum with Toray dry carbon fiber accent
Finish: Anodized (oil-resistant)
Installation: Overlay — bonds with heat-treated double-sided tape; no drilling or permanent modification required
Fitment: BMW E9X M3, F-series (F80 M3, F82 M4, F85/F86 X5M/X6M, F87 M2, F90 M5, F91-F93 M8, F97/F98 X3M/X4M), G-series (G01-G07, G11/G12, G14-G16, G20, G22, G26, G29, G30, G42, G80, G82, G87), MINI F-generation, Toyota GR Supra A90
Includes: 1 aluminum fuel cap cover
Brand: Dëff Japan
