OEM vs OEE vs Aftermarket Windscreen Glass

The three tiers in plain terms

OEM (original equipment manufacturer). Glass made for the vehicle maker, usually by the same glass company that supplied the factory, and often carrying the car brand's logo as well as the glass maker's mark.
OEE (original equipment equivalent). Glass made to fit the same opening and to meet the same safety standards, sold under the glass maker's own name without the car brand.
Aftermarket. A broad term for replacement glass made by other manufacturers, often imported. Quality ranges from very good to poor, which is why the brand and the marking matter.

What the law requires of every tier

Whatever the tier, the law sets the same floor. Regulation 202 of the National Road Traffic Regulations, 1999, requires a windscreen on a vehicle first registered after 1958 to be safety glass, permanently marked with the manufacturer's name or trade mark. Light transmittance through the windscreen must be at least 70 per cent, measured in line with SABS 1191.

So OEE and good aftermarket glass are not illegal or automatically unsafe. The real differences are in fit, optical quality, features and how the glass suits the systems on your particular car.

How to read the marking in the corner

Every legal replacement screen has a small printed block, usually in a lower corner. Before the fitter starts, ask to see the new screen and check it. On the old screen, the marking also tells you what came out, which is useful if you want like for like.

The glass maker's name or trade mark, which must be permanent.
On OEM glass, often the vehicle brand's logo as well.
Standard and approval codes, which show the glass is certified as laminated safety glass.
A date code, showing roughly when the glass was made.

Where the tier really matters

On a plain windscreen with no camera or special features, a good OEE screen fitted well will often perform just like the original. The tier matters more as the screen gets more complex:

Camera screens. The camera window must be optically correct and the bracket must sit in exactly the right place, or calibration may fail.
Head-up displays. The glass shape must suit the projector, or the image can appear doubled.
Acoustic and heated glass. The replacement must have the same layers and connectors to keep the feature working.
Edge fit. Poorly matched curvature can lead to wind noise, leaks or stress cracks later.

What SAMBRA says to look for

The RMI's motor body repair association, SAMBRA, has warned about substandard screens being fitted. Its guidance is practical: the glass must fit the vehicle's structure correctly, use a laminate that protects against objects coming through, and have a proper laminated layer that protects the adhesive and electronics from UV and heat. If the adhesive is exposed to UV light over time, the windscreen can detach from the body.

It also described a job where the screen supplied lacked the ADAS stripes and dots needed for the car's camera. That is a tier and part-number problem, not just a fitting problem. Asking which exact part is being fitted is the best defence.

Imports, tariffs and the aftermarket

A large share of aftermarket glass is imported. TopAuto and IOL have reported that SARS now applies definitive anti-dumping duties to windscreens imported from China and Malaysia, implemented on 4 September 2026 after ITAC found that earlier duties were being avoided by changing tariff codes and routing glass through Malaysia. The duty rate depends on the maker.

This does not make imported glass bad. It does mean the price gap between tiers may change, and that a cheap quote for an imported screen deserves the same scrutiny as any other: brand, marking, fit and features.

Insurance, warranties and choosing a tier

On an insurance claim, the insurer usually decides which tier it will pay for, and some will let you pay the difference for a higher tier. Ask before the job is booked, not on the day. If your car is under a manufacturer warranty or a motor plan, ask the dealer in writing whether it has any requirement for replacement glass, and keep the answer.

If you are paying yourself, ask each fitment business for the brand and tier on the written quote. Our windscreen cost guide covers the other factors, and windscreen replacement in Pretoria explains how we pass your enquiry to a fitment business that covers your area. [CONFIRM: which glass tiers the fitment businesses covering Pretoria normally supply]

Frequently asked questions

Is OEE windscreen glass safe?

OEE glass is made to fit the same opening and meet the same safety standards as the original. Like any screen, it must be correctly fitted and carry a permanent maker's mark.

How can I tell if a windscreen is OEM?

Look at the printed marking in a lower corner. OEM glass usually shows the vehicle brand's logo as well as the glass maker's mark.

Does my insurer have to fit OEM glass?

Not necessarily. Many policies specify OEE or allow the insurer to choose. Check your policy and ask whether you can pay the difference for OEM.

Is aftermarket glass a problem for ADAS cameras?

It can be if the camera window or bracket does not match. Ask the fitter to confirm the exact part suits your car's camera system before fitting.

Why do the prices of the same tier differ between quotes?

Brand, stock levels, import costs, included parts and calibration all vary. Compare quotes line by line for the same tier and features.

OEM, OEE and aftermarket windscreen glass explained