The Blaze Aviator RB3584N pairs an all-metal front with 140mm metal temple arms, and this aftermarket set is cut to that aviator profile so the curve into the temple tip matches the factory sweep rather than the straighter bend used on square-fronted Ray-Ban lines. All-metal construction on both ends means the hinge tolerances need to be close, not just the overall length, since a slightly thicker or thinner arm can bind against an all-metal front.

On aviator-style fronts the temple arm carries more of the visual line than it does on a square frame, so a slightly wrong curve is more noticeable here than on boxier styles. If the lenses and front are still in good shape and only the arm is scratched or bent, replacing just the temple keeps the aviator silhouette intact without buying a new pair. Checking that both arms match in curve once fitted is worth the extra minute, since a mismatched pair stands out more on this shape than on a square one.

Frequently asked questions

Can I replace just one arm, or do I have to buy both?

You can order a single side if only one arm on your 3584 is broken or scratched, or buy the pair if both need replacing — either way they match the 140mm length exactly.

Are these official Ray-Ban replacement parts?

These are compatible aftermarket arms, independently produced to match the 3584's hinge and 140mm length. They aren't manufactured or supplied by Ray-Ban, just built to the same measurements so they attach correctly.

Do I need a specific screwdriver to attach these myself?

You'll need a small eyeglass screwdriver, typically included in basic repair kits, to remove the old hinge screw and attach the new 140mm arm to your 3584 frame — the whole swap usually takes under five minutes.

What if the arms arrive and the hinge doesn't line up with my frame?

Because each pair is listed against a specific model, in this case the 3584, mismatches are rare, but you're covered by a 14-day return window if the 140mm arms don't align with your hinge.