How to read the inscription
In an inscription such as RB4243 ··· 49□·· ···, each part has a purpose:
All Ray-Ban replacement lenses →All original Ray-Ban lenses →
Bring your Ray-Ban RB4243 glasses back to life with a pair of original lenses, made for this model and bearing the original logo.
The inscription on the inside of the arm lets you confirm the model and exact lens measurement without visually comparing frames.
In an inscription such as RB4243 ··· 49□·· ···, each part has a purpose:
Frame material of the RB4243: Nylon. This pair of original lenses keeps the shape, thickness, beveling and fit designed for this frame; you just need to confirm that the reference and lens size match.
We work with original replacement parts and help you confirm the model and lens size to reduce mistakes before we prepare your order.
ReplacementLenses has been a certified EssilorLuxottica distributor since 2018.
Ray-Ban pair with the original markings for the variant.
We explain where to find RB4243 and how to tell the 49 mm lens sizes apart.
Coverage against manufacturing defects and after-sales support.
This model has a dedicated guide: follow the method shown in the video for your frame.
If your Ray-Ban RB4243 frame still fits perfectly but the lenses are scratched or worn, replacing only the lenses is the smart way to bring them back to life. These original Ray-Ban lenses restore the look, sun protection and visual feel of your sunglasses while saving money compared with buying a new pair, with free shipping on qualifying orders.
At ReplacementLenses.net, we work with Ray-Ban replacement lenses every day in our own optical workshop in Granada. We are an official EssilorLuxottica distributor, and qualified opticians check every lens with a lensmeter before dispatch.
This replacement is made for Ray-Ban RB4243 in size 49. The model and size must match because the Phantos shape and Base 6 lens curve are designed to fit this specific frame geometry.
These lenses are intended for original Ray-Ban RB4243 frames. We do not recommend using them on copies or replica frames, as small differences in the rim can cause poor fit, stress on the lens or movement inside the frame.
Check the inside of the temple arm. You should find the model reference, usually shown as RB4243, followed by frame and lens information and the eye size. For this product, you need RB4243 and size 49.
If your frame is marked RB4243-V or belongs to a different fitting version, make sure the eye size is 49 and that the lens shape matches the sunglasses version. If you are unsure, contact us before ordering.
To achieve the closest factory match, select the same colour code as your original lenses. With Ray-Ban, the colour code is the most reliable way to identify the correct lens option.
These lenses are made from polycarbonate, a light and resistant material suitable for everyday sunglasses. The Base 6 curve helps preserve the correct optical geometry and fit in the RB4243 frame.
They provide UV400 protection, blocking 100% of UVA and UVB rays. The available lens finishes for this product are gradient: 13 brown gradient and 8G grey gradient.
If your frame is still in good condition, changing only the lenses is more economical and more sustainable than buying a complete new pair. You keep the frame that already fits your face and avoid unnecessary waste.
Since 2018, we have repaired more than 600,000 glasses, processed over 400,000 orders and shipped to more than 50 countries. Many Ray-Ban frames do not need replacing; they simply need new original Ray-Ban lenses.
As an original Ray-Ban product, these lenses include the Ray-Ban logo. Our optical team checks the condition and optical quality of each lens before shipping.
Buying from an official EssilorLuxottica distributor helps you avoid low-quality copies, wrong shades or lenses without proper optical guarantees.
Will these fit any Ray-Ban RB4243? They fit Ray-Ban RB4243 in size 49. If your frame has another size, the lenses should not be filed down or forced into place.
How do I know my size is 49? Look inside the temple arm for the model and eye size. If it shows RB4243 and 49, this is the correct replacement.
Are they original Ray-Ban lenses? Yes, they are original Ray-Ban lenses. Original Ray-Ban lenses include the Ray-Ban logo and come through the official EssilorLuxottica channel.
Are they glass lenses? For this product, the technical attribute is polycarbonate. This makes them lightweight and resistant for daily sunglass use.
Do they protect against UV? Yes, they provide UV400 protection, blocking 100% of UVA and UVB rays. That is essential for proper sunglass protection.
Are these polarized? The listed options for this product are not marked as polarized. If you need polarization, choose a variant specifically labelled as polarized.
Can I install them at home? Installation may require controlled pressure and, on suitable plastic frames, gentle dry heat. If you have no experience, we recommend visiting an optician.

Ratings posted by customers for the Ray-Ban RB4243. We show the most recent ones.
“Estas piezas de repuesto son perfectas para mis gafas Ray-Ban”
Published reviewThe price is for a complete pair: original Ray-Ban right and left lenses.
Yes. You can choose another available variant as long as you select the RB4243 model and the exact lens size of your frame.
Yes. On polarized variants, the marking may appear as Ray-Ban P, in addition to the discreet RB engraving.
No. Shape doesn't determine compatibility: these lenses are only for reference RB4243 and the lens size you choose.
Your review of Ray-Ban RB4243