How to read the inscription
In an inscription such as RB3647 ··· 51□·· ···, each part has a purpose:
All Ray-Ban replacement lenses →All original Ray-Ban lenses →
Bring your Ferrari back to life with a pair of original Ray-Ban lenses, made for the RB3647 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 RB3647 ··· 51□·· ···, each part has a purpose:
The RB3647 has a metal frame. This pair of original lenses keeps the geometry, beveling and fit designed for the model; you just need to confirm the exact reference and lens size.
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 RB3647 and how to tell the 51 mm lens sizes apart.
Coverage against manufacturing defects and after-sales support.
The metal frame uses a rim closed with a screw. Work on a protected surface and avoid forcing the lens or bending the frame front.
Bring your Ray-Ban RB3647M Ferrari sunglasses back to clear, sharp vision without buying a new pair. These original Ray-Ban replacement lenses restore the look and optical performance of your Ferrari metal frame at a much lower cost — less than replacing the complete sunglasses — with free shipping on qualifying orders.
At ReplacementLenses.net, we work with genuine Ray-Ban spare lenses every day in our own optical workshop in Granada. We are an official EssilorLuxottica distributor, and qualified opticians check each lens with a lensmeter before dispatch.
These lenses are made for the Ray-Ban RB3647M Ferrari, model 3647, size 51. They are intended for original Ray-Ban Ferrari collection metal frames with a round lens shape. Similar-looking Ray-Ban models can have different rim geometry, so the exact model code matters.
If your frame is marked RB3647M or 3647M and size 51, this is the correct replacement lens option. We do not recommend fitting them into replicas or imitation frames, as original Ray-Ban tolerances are required for proper seating.
Check the inside of the temple arm. You should find the Ray-Ban model reference, usually followed by size information. For this product, the key details are model 3647M and size 51.
The bridge measurement does not define the replacement lens size. What you need to confirm is the RB3647M Ferrari model and the 51 lens size. If the marking is worn or unclear, send us a photo before ordering and our team will help you verify it.
You can match the colour of your current lenses or refresh the appearance of your RB3647M Ferrari while keeping genuine Ray-Ban quality.
These replacement lenses are made of glass and follow the Base 6 curve specified for this model. As original Ray-Ban sun lenses, they provide UV400 protection, blocking 100% of UVA and UVB rays.
The available lens options are green, grey gradient and silver flash mirror. No polarized version is listed for these options; if you need polarization, choose a variant that is explicitly marked as polarized.
The Ray-Ban RB3647M Ferrari metal frame is a special piece worth keeping. Replacing scratched or damaged lenses is cheaper, more sustainable and preserves the identity of your sunglasses without compromising on original optical quality.
Since 2018, we have repaired more than 600,000 pairs of glasses, processed over 400,000 orders and shipped to more than 50 countries. In many cases, a premium frame only needs fresh original lenses to feel new again.
This is an original Ray-Ban replacement product. Original Ray-Ban lenses include the Ray-Ban logo and come through the official EssilorLuxottica channel.
Our opticians inspect every order with professional optical equipment. If you want to preserve the value and appearance of your Ferrari edition frame, choosing original Ray-Ban lenses is the right decision.
Do these lenses fit the standard Ray-Ban RB3647?
These lenses are listed for the Ray-Ban RB3647M Ferrari, model 3647, size 51. Always check the code printed inside your frame before ordering.
Will they fit if my Ferrari frame has a different temple colour?
The temple colour normally does not affect lens fit. The important points are the original RB3647M Ferrari frame and the 51 size.
Are they compatible with RB3647N?
Compatibility with RB3647N should not be assumed. Even small differences in rim shape or lens curve can affect the fit.
Are these glass or plastic lenses?
These lenses are glass. That helps preserve the feel and optical character of the original Ray-Ban replacement.
Do they protect against UV rays?
Yes. These original Ray-Ban sun lenses provide UV400 protection, blocking 100% of UVA and UVB rays.
Can I install them myself?
The RB3647M Ferrari is a metal frame, so the rim is normally opened with a screw. If you are not used to handling metal eyewear, we recommend professional installation.
Is it worth replacing the lenses instead of buying new sunglasses?
For a Ferrari collection frame, very often yes. You keep the original frame and recover clear vision for a fraction of the price of a new pair.

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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 RB3647 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 RB3647 and the lens size you choose.