How to read the inscription
In an inscription such as RB4368 ··· 51□·· ···, each part has a purpose:
All Ray-Ban replacement lenses →All original Ray-Ban lenses →
Bring your Ray-Ban RB4368 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 RB4368 ··· 51□·· ···, each part has a purpose:
Frame material of the RB4368: Injected. 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 RB4368 and how to tell the 51 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 RB4368 frame is still in good condition but the lenses are scratched, worn or no longer comfortable to look through, replacing only the lenses is the smart choice. These original Ray-Ban RB4368 replacement lenses restore the look, sun protection and clarity of your sunglasses for far less than buying a new pair, with free shipping on qualifying orders.
At ReplacementLenses.net, we work from our own optical workshop in Granada with qualified opticians and a MEI Easy Fit Trend edging system. We are an official EssilorLuxottica distributor and check each lens with a lensmeter before dispatch.
These lenses are made for the Ray-Ban RB4368 in size 51. Compatibility is not based only on the shape of the frame; the exact model code and lens size must match.
Ray-Ban models can look very similar from the outside, but a small difference in size or groove geometry can stop the lens from fitting properly. Always check your temple code before ordering.
Look inside the temple arm of your sunglasses. You should find the model reference RB4368 and the size number 51, which identifies the lens calibre.
A typical Ray-Ban temple marking includes the model, frame colour code and size. For this product, the key information is RB4368 and 51. Choosing the wrong size, even by a small margin, may make the lens too loose or impossible to install.
Select the lens option by its original code whenever possible. This is the safest way to keep the factory look of your Ray-Ban RB4368.
These Ray-Ban RB4368 lenses are made from polycarbonate, a lightweight and resistant material widely used for everyday sunglasses. They provide UV400 protection, blocking 100% of UVA and UVB rays.
The available lens options include solid colours, gradient finishes and one polarized version: 9A – Green polarized – Plastic. If glare reduction is important for driving, water or bright surfaces, make sure you choose the option clearly marked as polarized.
If your frame is still comfortable and in good condition, replacing the lenses gives your Ray-Ban RB4368 a second life. It can save you money compared with buying new sunglasses and is a more sustainable way to keep using a frame you already own.
Since 2018, we have repaired more than 600,000 pairs of glasses and processed over 400,000 orders in more than 50 countries. That experience matters when you want original lenses to fit and perform properly.
As original Ray-Ban lenses, they include the Ray-Ban logo; polarized lenses carry the Ray-Ban P marking. Being an official EssilorLuxottica distributor allows us to supply genuine replacement parts that preserve the identity and optical performance of your sunglasses.
You can also browse our full range of original Ray-Ban lenses. Every order is checked by qualified opticians in our workshop before shipping.
They are designed for Ray-Ban RB4368 size 51. Please confirm both the model code and size inside your temple arm before ordering.
The size is usually printed or engraved inside the temple, near the model code. For this product, you need to see RB4368 and 51.
Yes, provided you select a compatible lens option for the same model and size. In this listing, the polarized option is 9A – Green polarized – Plastic.
Yes, these are original Ray-Ban replacement lenses. Original lenses include the Ray-Ban logo, and polarized versions include Ray-Ban P.
Yes, they offer UV400 protection, blocking 100% UVA and UVB. That is essential for sunglasses intended for adult sun use.
It is possible if you are used to handling sunglass frames carefully. If the frame feels too tight or you are unsure, a professional optician is the safest option.
A lens that is even slightly wrong may not sit securely or may not enter the frame. Always check RB4368 and size 51 before completing your purchase.

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The 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 RB4368 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 RB4368 and the lens size you choose.