All Ray-Ban replacement lenses →All original Ray-Ban lenses →
Bring your Ray-Ban RB4203 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.
Example for guidance only. The position and order of the codes may vary depending on the frame.In an inscription such as RB4203 ··· 51□·· ···, each part has a purpose:
Frame material of the RB4203: 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.
Certified distributorReplacementLenses has been a certified EssilorLuxottica distributor since 2018.
Ray-Ban pair with the original markings for the variant.
We explain where to find RB4203 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 RB4203 frame still fits perfectly but the lenses are scratched, replacing only the lenses is the smart way to bring your sunglasses back to life. These original Ray-Ban replacement lenses preserve the factory look, fit and sun protection, with free shipping on qualifying orders and savings compared with buying a complete new pair of sunglasses.
These lenses are made for the Ray-Ban RB4203 model. They are not generic lenses for any round or phantos-style frame: the lens shape, edge profile and Base 6 curve are specific to this reference. If your frame is a replica, exact fitting cannot be guaranteed because copy frames often differ slightly from the original dimensions.
Check the inside of the temple arm. You should see the RB4203 model reference and the corresponding size; for this product, the size is 51. Ray-Ban frames usually show the model followed by lens size, bridge and temple length. If the marking is worn or unclear, send us a photo by WhatsApp or email and our team will help you verify it before dispatch.
This option is colour 13 – brown gradient – plastic. The brown gradient lens finish is comfortable for everyday wear: darker at the top to soften overhead sunlight and lighter towards the bottom for a more open view.
These lenses are made from polycarbonate, a lightweight and resistant material suited to daily sun use. They provide UV400 protection, blocking 100% of UVA and UVB rays. The Base 6 curve helps maintain the correct optical behaviour and the original appearance of the Ray-Ban RB4203.
Very often the frame is still in excellent condition and only the lenses are damaged. Replacing them lets you keep the sunglasses that already fit your face, save money and reduce waste. At ReplacementLenses.net we work daily with original Ray-Ban lenses for precise, reliable repairs.
We are an official EssilorLuxottica distributor. Original Ray-Ban lenses include the Ray-Ban logo, an important sign that separates genuine lenses from compatible or imitation parts. In our own workshop in Granada, qualified opticians check lenses with a lensmeter and professional MEI Easy Fit Trend equipment. Since 2018, we have repaired more than 600,000 glasses and processed over 400,000 orders in more than 50 countries.
Will these fit any round Ray-Ban frame?
No. These lenses are designed specifically for the Ray-Ban RB4203, with its phantos shape, size 51 and Base 6 curve. Other models may not hold the lens safely.
How do I know my size is correct?
Look inside the temple arm for RB4203 and the size marking. This product is size 51; if your marking differs, contact us before ordering.
Are they genuine Ray-Ban lenses?
Yes, this is an original Ray-Ban product. Original Ray-Ban lenses include the Ray-Ban logo and come through the official EssilorLuxottica channel.
Can I install them at home?
On nylon or plastic frames, lenses are usually fitted by pressure, often helped by gentle, controlled heat. If you are not used to lens fitting or feel too much resistance, a local optician is the safest option.
Will they fit a replica frame?
We cannot guarantee fitting on replicas. Send us clear photos of the temple markings and front of the frame and we will help you check whether it looks original.
Do they protect against UV?
Yes. These sun lenses provide UV400 protection, blocking 100% of UVA and UVB rays, which is essential for safe outdoor use.
Is it worth replacing lenses instead of buying new sunglasses?
If your RB4203 frame is still in good condition, replacing only the lenses is usually the most cost-effective choice. You recover clear vision and the original look for much less.
We only show reviews for this product. If you've already bought it, tell us how the fit, color and installation went.
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 RB4203 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 RB4203 and the lens size you choose.
Your review of Ray-Ban RB4203