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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 →

Original product Original lenses Ray-Ban RB3749
Ray-Ban

Original Ray-Ban RB3749 lenses

Bring your Ray-Ban RB3749 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 RB3749
$ 57.96 per pair
Model
Ray-Ban RB3749
Material
Mineral glass
Product
Original pair · with Ray-Ban logo
Choose the options to see availability
Quantity: 1 Total $ 57.96
3-year warrantyOn all replacement parts
Check the model and lens size. 55 and 58 mm lenses are not interchangeable. This pair is only for the Ray-Ban RB3749.
Before you choose

Find the right lens size for your RB3749

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: RB3749 ··· 55□·· 140Example 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 RB3749 ··· 55□·· 140, each part has a purpose:

RB3749ModelMust match this product.
···Frame colorIdentifies the finish of the frame front.
55Lens 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:

  • 55□ → 55 mm
  • 58□ → 58 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 RB3749

The RB3749 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
RB3749
Available lens sizes
55 and 58 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 RB3749 and how to tell the 55 and 58 mm lens sizes apart.

3-year warranty

Coverage against manufacturing defects and after-sales support.

Meet our team Check compatibility
Installation guide

How to replace the lenses on your RB3749

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 RB3749Step-by-step installation
Specialist support
More information

Everything about this replacement part for the Ray-Ban RB3749

Restore Your Ray-Ban RB3749 Sunglasses with Original Replacement Lenses

Bring your Ray-Ban RB3749 sunglasses back to life with these 100% original replacement lenses, manufactured and distributed by Luxottica. Enjoy a flawless fit, official Ray-Ban quality, and the iconic RB logo when applicable. These are the only lenses that guarantee the authentic look and optical performance your sunglasses deserve.

Designed to match the original factory specifications, these lenses ensure perfect compatibility and superior sun protection. Don’t settle for imitations—choose official Ray-Ban replacement lenses to maintain the unique style and comfort of your RB3749 sunglasses.

Technical Specifications & Materials

  • Compatibility: Exclusively for Ray-Ban RB3749. Always check the exact model code on your frame.
  • Available sizes: 55 mm and 58 mm (verify your size on the inside of the temple).
  • Lens diameter: 57 mm and 60 mm depending on the variant.
  • Lens material: High-quality crystal, as used in the original model.
  • Shape: Irregular, specifically designed for RB3749.
  • Base curve: 6 base for optimal fit and protection.
  • Available colors: 51 – Clear Gradient Brown, 3F – Clear Gradient Blue, 31 – Green, C5 – Red, R5 – Blue, 71 – Gradient Grey, 58 – Green Polarized, 4E – Green. All in original Ray-Ban crystal.
  • Use: Sunglasses, UV protection, and visual comfort.
  • Target: Adult.
  • Product type: Official Ray-Ban replacement, not compatible or generic.

How to Check Your Exact Model and Size

To ensure compatibility, follow these steps:

  • Locate the model code (RB3749) on the inside of the temple arm.
  • Check the size (e.g., 55 or 58) printed next to the model code.
  • Verify the color code if you need a specific tint.
  • If unsure, compare your current lenses’ shape and dimensions with the specifications above.
Original Ray-Ban RB3749 Replacement Lenses | Official Parts
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We answer your questions

FAQ

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 color or material depending on the variant or production year, but they always meet the original quality and design.

What exactly is included in my order?

Your order includes one pair of original Ray-Ban RB3749 lenses. The frame and other accessories are not included.

Are they guaranteed authentic?

We guarantee you will receive genuine Ray-Ban replacement parts, officially distributed with full manufacturer authenticity.

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

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

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 RB3749 model and the exact lens size of your frame.

How do I know if I need 55 or 58 mm?

Look for the reference on the inside of the arm. In an inscription such as RB3749 ··· 55□··, the number 55 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 RB3749 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.