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Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses Certified EssilorLuxottica distributor An international benchmark for Ray-Ban and Oakley replacement parts Over 600,000 glasses restored in 50+ countries New High-precision custom engraving on your lenses 3-year warranty on all replacement parts Compatible Quality and savings to renew your glasses

All Ray-Ban replacement lenses →All original Ray-Ban lenses →

Ray-Ban

Original Ray-Ban RB3751 lenses

Bring your Ray-Ban RB3751 glasses back to life with a pair of original lenses, made for this model and bearing the original logo.

Complete pair Glass lens Original logo
$ 57.96 from · price per pair
Select the lens sizeChoose your lens size
Choose the color and coatingChoose a color

Material: Mineral glass

Optional
Your configurationOriginal lenses RB3751
$ 57.96 per pair
Model
Ray-Ban RB3751
Material
Mineral glass
Product
Original pair · with Ray-Ban logo
Choose the options to see availability
Quantity: 1 Total $ 57.96
Check the model and lens size. 58 and 61 mm lenses are not interchangeable. This pair is only for the Ray-Ban RB3751.
Before you choose

Find the right lens size for your RB3751

The inscription on the inside of the arm lets you confirm the model and exact lens measurement without visually comparing frames.

Inscription on the inside of the arm: RB3751 ··· 58□·· 145Example for guidance only. The position and order of the codes may vary depending on the frame.

How to read the inscription

In an inscription such as RB3751 ··· 58□·· 145, each part has a purpose:

RB3751ModelMust match this product.
···Frame colorIdentifies the finish of the frame front.
58Lens sizeThis is the size you need to select.
··BridgeThis is not the lens size.

This reference comes in 2 sizes. Find the number right before the □ symbol on your arm and choose that same lens size:

  • 58□ → 58 mm
  • 61□ → 61 mm

The number after the □ is the bridge: it isn't used to choose the lens. Can't read it? Measure your lens from side to side at its widest point; that measurement in millimeters matches the lens size.

Product and model

Ray-Ban RB3751

The RB3751 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.

Reference
RB3751
Available lens sizes
58 and 61 mm
Identification
Original logo
MaterialGlass lens
Compatible frameMetal
Packaging1 pair
ManufacturingOriginal Ray-Ban
Product contents

What you'll receive with your order

1Original right lens with Ray-Ban logo
2Original left lens with RB engraving
3Selected color, coating and lens size
CristalesRepuesto technician checking a lens in the Granada workshop
Specialists since 2018Original product with specialist support
Why choose ReplacementLenses

Origin, compatibility and contents explained before you buy

We work with original replacement parts and help you confirm the model and lens size to reduce mistakes before we prepare your order.

EssilorLuxottica Ray-Ban Certified distributor
since 2018
Certified distributor

ReplacementLenses has been a certified EssilorLuxottica distributor since 2018.

Verifiable original

Ray-Ban pair with the original markings for the variant.

Guided compatibility

We explain where to find RB3751 and how to tell the 58 and 61 mm lens sizes apart.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Installation guide

How to replace the lenses on your RB3751

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.

We guide you step by stepIf you have any questions during installation, write to us and we'll help you with your model.
Guide specific to the RB3751Step-by-step installation
Specialist support
More information

Everything about this replacement part for the Ray-Ban RB3751

Restore your Ray-Ban RB3751 with original replacement lenses

Bring your Ray-Ban RB3751 sunglasses back to life with 100% original replacement lenses, manufactured and distributed by Luxottica. These lenses guarantee authenticity, a perfect fit, and the signature RB laser engraving, ensuring your sunglasses maintain their iconic look and premium quality.

Choosing official Ray-Ban replacement lenses means you get the exact optical performance, sun protection, and durability your RB3751 model was designed for. Don’t settle for less—only genuine Ray-Ban parts preserve the integrity and style of your eyewear.

Technical specifications and materials

  • Compatibility: Designed exclusively for Ray-Ban RB3751 sunglasses.
  • Available sizes: 58 mm and 61 mm (check the exact size on the inside temple of your frame).
  • Available lens colors:
    • 31 – Green (Crystal)
    • R5 – Blue (Crystal)
    • B1 – Dark Grey (Crystal)
    • 40 – Green Mirror Silver (Crystal)
  • Lens material: Crystal (mineral glass), according to the original color reference.
  • Use: Sun protection for adults.
  • Product type: Original Ray-Ban replacement, not compatible or generic.
  • Original frame info: Metal temples (for model identification only).

How to check your exact model and size

To ensure compatibility, check the inside of your Ray-Ban temple arm. You’ll find:

  • Model code: Look for “RB3751”.
  • Size: Usually shown next to the model, such as 58 or 61.
  • Color code: May appear as 31, R5, B1, or 40, depending on your original lens color.

Verify these details before ordering to guarantee a perfect fit.

Frequently asked questions before buying your lenses

Are these identical to the lenses my sunglasses came with?

Yes, these are original Ray-Ban/Luxottica replacement lenses, made to official standards. There may be minor updates in material or color tone depending on the variant and production year, but always official quality.

What exactly is included in my order?

Your order includes one pair of original Ray-Ban RB3751 lenses. The frame is not included.

Are they guaranteed authentic?

We guarantee only original Ray-Ban replacement parts sourced directly from the official manufacturer.

Discover our full range of original Ray-Ban replacement parts.

You can also browse all our original Ray-Ban lenses available for other models.

Original Ray-Ban RB3751 Replacement Lenses | Official Parts
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We answer your questions

FAQ

Is the price for one lens or for the pair?

The price is for a complete pair: original Ray-Ban right and left lenses.

Can I choose a different color from the original?

Yes. You can choose another available variant as long as you select the RB3751 model and the exact lens size of your frame.

How do I know if I need 58 or 61 mm?

Look for the reference on the inside of the arm. In an inscription such as RB3751 ··· 58□··, the number 58 is the lens size.

Are all colors available in all lens sizes?

Not necessarily. Final availability depends on the lens size and the color and coating combination: when you choose a lens size, you'll only see the colors that exist for it.

Do the polarized versions have a logo?

Yes. On polarized variants, the marking may appear as Ray-Ban P, in addition to the discreet RB engraving.

Will they fit another similar model?

No. Shape doesn't determine compatibility: these lenses are only for reference RB3751 and the lens size you choose.

Search by reference

Find your glasses' reference

Look on the inside of one of the temple arms. That's where you'll find the details needed to find the right replacement part.

Inside of a Ray-Ban temple arm showing reference RB2140, color 901, lens size 50, bridge 22 and arm length 150
RB2140Frame model
901Color code
50Lens size
22Bridge width
150Arm length
●

To find lenses: the model and lens size are usually enough. For arms: we also recommend checking the color and length.