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 RB4315 replacement lenses
If your Ray-Ban RB4315 lenses are scratched, worn or no longer comfortable to look through, you do not need to replace the whole pair of sunglasses. These original Ray-Ban RB4315 replacement lenses restore the look, protection and optical performance of your frame, with free shipping and a much lower cost than buying new sunglasses.
Model compatibility
These Ray-Ban replacement lenses are made for the Ray-Ban RB4315 model in size 51. They are designed to match the original lens shape, Base 6 curve and fitting geometry of this specific frame.
Please check the reference inside your temple before ordering. Similar Ray-Ban frames may look close, but small differences in lens shape or groove depth can make the lenses incompatible.
How to identify your model and size
Look inside the temple arm of your sunglasses. You should find the model code RB4315 and the lens size 51 printed as part of the frame information.
If the markings are faded, compare them with your original purchase reference or contact us before installation. A frame that has been bent by heat or heavy use may need adjustment before new lenses are fitted.
Main features
- Brand: Ray-Ban
- Compatible model: RB4315
- Size: 51
- Diameter: 51 mm
- Lens material: polycarbonate
- Lens curve: Base 6
- Use: sunglasses
- Audience: adult
- Product type: original
- Protection: UV400, blocks 100% UVA/UVB
Available colours
- 71 - Green - plastic
- 73 - Brown - plastic
Choose the colour that matches your Ray-Ban RB4315 version. For the best cosmetic result, use the code from your current lenses, frame label or original sunglasses reference.
Material, protection and lens options
These original Ray-Ban RB4315 lenses are made from polycarbonate, a lightweight and resistant material for everyday sun use. The Base 6 curve preserves the intended fit and visual feel of the original sunglasses.
They provide UV400 protection, blocking 100% of UVA and UVB rays. If you need polarised lenses, select only a variant clearly marked as polarised; the available 71 green and 73 brown options are not listed as polarised.
Why replace only the lenses
Replacing only the lenses is the smart way to bring your favourite Ray-Ban frame back to life. You can save up to 60% compared with buying a complete new pair, while keeping the frame that already fits your face.
It is also a more sustainable choice. At ReplacementLenses.net we have repaired more than 600,000 glasses, processed over 400,000 orders and shipped to more than 50 countries since 2018.
Authenticity and logo
These are original Ray-Ban lenses. Original Ray-Ban lenses include the Ray-Ban logo; when a polarised version exists and is clearly marked as such, the logo appears as Ray-Ban P.
We are an official EssilorLuxottica distributor. In our own workshop in Granada, qualified opticians check lenses with a lensmeter and work with professional MEI Easy Fit Trend equipment.
You can also browse more original Ray-Ban lenses if you need another model.
Frequently asked questions
Will these fit other similar Ray-Ban frames?
These lenses are for Ray-Ban RB4315 size 51. A similar-looking Ray-Ban model can have a different lens contour, so we recommend matching the exact code before ordering.
Where do I find the size?
The size is usually printed inside the temple arm near the model code. For this item, you need RB4315 and size 51.
Are they genuine Ray-Ban lenses?
Yes, these are original Ray-Ban lenses supplied through the official EssilorLuxottica channel. They include the Ray-Ban logo used on original lenses.
Can I install them at home?
Plastic frames are normally fitted by pressure, sometimes with gentle, controlled warmth. If the lens does not seat easily, do not force it; a professional optician can fit it safely.
Do they offer proper UV protection?
Yes, these RB4315 lenses provide UV400 protection and block 100% UVA/UVB. That is essential for real sun protection, not just dark tint.
What if my frame is slightly warped?
A warped RB4315 frame may prevent the new lens from sitting correctly. Have the frame adjusted first to avoid stress on the lens or groove.
Are these lenses polarised?
A Ray-Ban lens should only be considered polarised when the option is clearly marked as polarised. These listed 71 green and 73 brown options are not described as polarised.
Tutorial
How to install Ray-Ban RB4315 lenses
Before fitting the lenses, confirm the code inside the temple: it must read RB4315 and size 51. Do not try to install lenses into a different model, even if the frame looks similar.
Metal frames usually require loosening the rim screw. Acetate or propionate-style plastic frames are normally pressure-fitted and may benefit from gentle, even warmth, such as warm water, never excessive direct heat. Rimless or special constructions should be handled by a professional.
Work on a clean surface and press near the lens edge, not in the centre. If you feel strong resistance, stop and recheck the model, size and frame condition.
If you are not used to changing sunglass lenses, we recommend visiting an optical workshop. Our qualified opticians in Granada fit and verify replacement lenses every day using professional optical equipment.
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 | Oval |
| Lenses Color | 71 – GREEN – PLASTIC, 73 – BROWN – PLASTIC |
| Lens material | Polycarbonate |
| Lens curvature | Base 6 |
| Width (mm) | 40, 51 |
| Height (mm) | 40, 51 |
| Front Material | Injected |
| Ray-Ban Model | |
| Size | 51 |
| Temples Material | Plastic, Propionate |






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