The RB3477's aviator front calls for a 140mm metal temple arm to match, both in length and in finish. A compatible replacement needs to be built to those same specifications, since aviator-style fronts leave little room to disguise an arm that runs even a few millimetres short.

The temple tip is thinner than the rest of the arm and is usually the first part to wear through or crack on an aviator frame like the RB3477. Once that happens, the whole arm typically needs swapping rather than just the tip. A compatible 140mm aftermarket arm resolves the issue in one go, without needing to source or fit a separate tip piece. It's worth checking the tip specifically before assuming the whole arm needs replacing, since the two kinds of damage can look similar from a distance.

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 3477 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 3477's hinge and 140mm length. They aren't manufactured or supplied by Ray-Ban, just built to the same measurements so they attach correctly.

My hinge feels loose — will new arms fix that, or is it the frame that's worn?

A new 140mm arm includes its own hinge barrel, so if the wobble is coming from worn threading on the arm side of the 3477, replacing it usually restores a snug, tight fold.

Is it worth buying new arms instead of a whole new frame?

Replacing both arms on the 3477 costs from €26.95 with free worldwide shipping, far less than a new frame, and it's backed by a 3-year warranty against manufacturing defects on the 140mm hardware itself.