Name: Original Ray-Ban 4203 Replacement Lenses
Brand: ReplacementLenses
SKU: 313
Availability: InStock

Original Ray-Ban 4203 Replacement Lenses

Size chart

Clothing Size Conversion Chart
Category	US	EU	UK	Chest (in)	Waist (in)	Hips (in)
Men	XS	44	34	32-34	26-28	33-35
	S	46	36	34-36	28-30	35-37
	M	48	38	38-40	32-34	39-41
	L	50	40	42-44	36-38	43-45
	XL	52	42	46-48	40-42	47-49
Women	XS	32	6	31-32	24-25	33-34
	S	34	8	33-34	26-27	35-36
	M	36	10	35-36	28-29	37-38
	L	38-40	12-14	37-39	30-32	39-41
	XL	42	16	40-42	33-35	42-44
Youth	XS	128	7	26-28	23-24	26-28
	S	134	8	28-30	24-25	28-30
	M	140	10	30-32	25-26	30-32
	L	146	12	32-34	26-27	32-34
	XL	152	14	34-36	27-28	34-36

Pants Size Conversion Chart
Category	US	EU	UK	Waist (in)	Hip (in)	Inseam (in)
Men	28	44	28	28	34	30
	30	46	30	30	36	31
	32	48	32	32	38	32
	34	50	34	34	40	33
	36	52	36	36	42	34
Women	0	32	4	24	34	30
	2	34	6	25	35	30
	4	36	8	26	36	31
	6	38	10	27	38	32
	8	40	12	28	40	32

Shoes Size Conversion Chart
Category	US	EU	UK	Foot Length (in)
Men	6	39	5.5	9.25
	7	40	6.5	9.625
	8	41	7.5	10
	9	42	8.5	10.25
	10	43	9.5	10.625
	11	44	10.5	11
	12	45	11.5	11.25
	13	46	12.5	11.625
Women	5	35	2.5	8.5
	6	36	3.5	8.875
	7	37	4.5	9.25
	8	38	5.5	9.625
	9	39	6.5	10
	10	40	7.5	10.25
	11	41	8.5	10.625
	12	42	9.5	11
M (Unisex)	5	37	4.5	8.75
	6	38	5.5	9
	7	39	6.5	9.5
	8	40	7.5	10
	9	41	8.5	10.25
	10	42	9.5	10.625
	11	43	10.5	11
	12	44	11.5	11.25

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Original Ray-Ban RB4203 replacement lenses

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 and savings of up to 60% compared with buying a complete new pair of sunglasses.

Model compatibility

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.

How to identify your model and size

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.

Main features

Brand: Ray-Ban
Compatible model: RB4203
Product type: Original
Size: 51
Diameter: 54 mm
Lens colour: 13 – brown gradient – plastic
Lens material: polycarbonate
Shape: phantos
Lens curve: Base 6
Use: sunglasses
Audience: adult

Available colours

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.

Material, protection and lens finishes

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.

Why replace only the lenses

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.

Authenticity and logo

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.

Frequently asked questions

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.

color

13 – BROWN GRADIENT – PLASTIC

Size