Features
SIZE

51 mm.
Before making your purchase, make sure to check the measurements of your glasses. This model is available in x lens width. All dimensions are listed in millimeters and include lens width, bridge, and temple length.
MATERIAL

Polycarbonate
EASY INSTALLATION

Easy Installation
All our spare parts are designed to fit perfectly with your original model. You can do it yourself at home by following our step-by-step instructions or videos.
Description

Original Ray-Ban RB4368 replacement lenses
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 included.
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.
Model compatibility
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.
How to identify your model and size
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.
Main features
- Brand: Ray-Ban
- Compatible model: RB4368
- Size: 51
- Lens diameter: 67 mm
- Lens material: polycarbonate
- Shape: square
- Lens curve: Base 6
- Use: sunglasses
- Audience: adult
- Product type: original
- Temple material: nylon
Available colours
- 73 - Brown - Plastic
- 87 - Gray - Plastic
- 9A - Green polarized - Plastic
- 11 - Gray gradient - Plastic
- 71 - Dark green - Plastic
- 80 - Dark blue - Plastic
- 4L - Blue gradient - Plastic
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.
Material, protection and lens finishes
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.
Why replace only the lenses
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 up to 60% 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.
Authenticity and logo
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.
Frequently asked questions
Will these lenses fit any Ray-Ban RB4368 frame?
They are designed for Ray-Ban RB4368 size 51. Please confirm both the model code and size inside your temple arm before ordering.
Where do I find the size?
The size is usually printed or engraved inside the temple, near the model code. For this product, you need to see RB4368 and 51.
Can I choose polarized lenses if my original ones were not polarized?
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.
Are these genuine Ray-Ban lenses?
Yes, these are original Ray-Ban replacement lenses. Original lenses include the Ray-Ban logo, and polarized versions include Ray-Ban P.
Do they provide real sun protection?
Yes, they offer UV400 protection, blocking 100% UVA and UVB. That is essential for sunglasses intended for adult sun use.
Can I install them at home?
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.
What happens if I order the wrong size?
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.
Tutorial
Installing your Ray-Ban RB4368 lenses
Before installation, check the inside of the temple again: it should show Ray-Ban RB4368 and size 51. Work on a clean, stable surface and avoid twisting the frame.
Metal frames are usually opened by loosening the rim screw. Acetate, plastic or nylon frames normally use pressure fitting; gentle, controlled warmth can make the frame slightly more flexible. Do not use excessive heat or sharp tools.
Rimless, semi-rimless or folding designs require extra care around the hinges and lens edges. If you have no experience replacing lenses, we recommend visiting an optician rather than forcing the frame.
Our Granada workshop handles this type of replacement every day. If something does not feel right during fitting, stop and get professional help.
Be Eco-Friendly

Commitment to Quality and the Environment
At Replacementlenses.net, our commitment to both quality and the environment is at the core of our mission.
We understand the importance of sustainability in today’s world, which is why we offer replacement parts for your glasses. Our goal is to help you extend the life of your favorite eyewear, reducing waste and the need for new purchases.
By choosing our products, you not only save money but also contribute to a more sustainable future. We believe that every small effort counts and that together we can make a big difference in protecting our planet.
Additional information
| Weight | 25 g |
|---|---|
| Dimensions | 20 × 10 × 1 cm |
| Brand | Ray-Ban |
| Audience | Adult |
| Use | Sun |
| Product Type | Original |
| Shape | Square |
| Lenses Color | 73 – BROWN – PLASTIC, 87 – GRAY – PLASTIC, 11 – GRAY GRADIENT – PLASTIC, 4L – BLUE GRADIENT – PLASTIC, 71 – DARK GREEN – PLASTIC, 80 – DARK BLUE – PLASTIC, 9A – GREEN POLARIZED – PLASTIC |
| Lens material | Polycarbonate |
| Lens curvature | Base 6 |
| Width (mm) | 45, 67 |
| Height (mm) | 67, 45 |
| Front Material | Injected |
| Ray-Ban Model | |
| Size | 51 |
| Temples Material | Nylon, Plastic |
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