Aviator-style RB3543 frames pair a 140mm metal temple with a matching metal front, and the two need to line up exactly for the arms to close evenly. A compatible replacement is built to this model's length rather than a generic aviator size, since aviator temples vary more in length across the Ray-Ban range than the frame shape alone would suggest.

The finish on thin aviator temples tends to wear first at the points that get the most contact: behind the ear and at the hinge. Once that plating thins out, the arm can start to feel gritty at the pivot even though the rest of the RB3543 still looks new. A matched aftermarket arm fixes that roughness without needing to touch the front or the lenses. Checking the hinge screw for play before ordering a full replacement pair can save you from replacing an arm that only needed a tightened screw.

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 3543 is broken or scratched, or buy the pair if both need replacing — either way they match the 140mm length exactly.

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 3543, mismatches are rare, but you're covered by a 14-day return window if the 140mm arms don't align with your hinge.

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 3543, replacing it usually restores a snug, tight fold.

What material are the arms made from, and will the color match my frame?

The arms are molded in an acetate or metal finish that matches the Aviator style of the 3543 closely, though very slight shade variation is possible since they're independently produced as separate aftermarket parts rather than cut from the same batch as the frame.