OEM vs. Aftermarket Windshields: Is There Really a Difference?

If your windshield needs to be replaced, you may be asked a question you’ve never really thought about before: Do you want OEM or aftermarket glass?

For most drivers, a windshield is a windshield. As long as it fits, looks right and keeps the weather out, how different could one piece of glass really be?

The answer is a little more complicated. There can be differences between OEM and aftermarket windshields, but aftermarket doesn't automatically mean lower quality, and OEM isn't necessarily required for every vehicle.

Here’s what BC drivers should know before choosing replacement glass.

What Is an OEM Windshield?

OEM stands for Original Equipment Manufacturer. Generally, OEM glass refers to a windshield made by or supplied through a manufacturer approved for the vehicle brand and built to the automaker's specifications.

Depending on the vehicle, you may even see the automaker's logo printed on the glass.

The biggest advantage of OEM glass is consistency with what was originally installed on the vehicle. The shape, thickness, tint, acoustic properties, sensor areas, mounting locations and other specifications are intended to match the original windshield.

For certain vehicles, particularly newer luxury vehicles or models with sophisticated technology integrated into the windshield, that exact specification can be important.

What Is Aftermarket Glass?

Aftermarket glass is manufactured as a replacement for the original windshield but isn't necessarily sold under the vehicle manufacturer's brand. That doesn't automatically make it "cheap glass."

There are reputable glass manufacturers prod

ucing high-quality aftermarket windshields designed to meet applicable Canadian safety standards. In many vehicles, a quality aftermarket windshield can provide an excellent replacement at a lower cost than OEM glass.

The important distinction isn't simply OEM versus aftermarket. It's the quality and specifications of the particular replacement windshield and whether it's appropriate for your vehicle.

Can You Actually See a Difference?

Sometimes you can. Often you can't.

With quality aftermarket glass, most drivers would have difficulty identifying a difference just by looking through the windshield.

However, differences can exist in areas such as optical clarity, glass thickness, tint, acoustic insulation and the precise positioning of brackets or camera mounting points.

Small differences may not matter much on a basic vehicle. On another vehicle, particularly one equipped with windshield-mounted cameras and sensors, precision can become much more important.

That's one reason we don't believe there should be a universal answer that OEM is always better or aftermarket is always the right value.

The right windshield depends on the vehicle.

What About ADAS Cameras and Sensors?

This is where the conversation around replacement glass has changed significantly.

Many newer vehicles use a forward-facing camera mounted behind the windshield as part of their Advanced Driver Assistance Systems (ADAS). Depending on the vehicle, these systems may support features such as lane departure warning, lane keeping assistance, adaptive cruise control, forward collision warning and automatic emergency braking.

The camera is looking through the windshield, so the glass itself effectively becomes part of that system.

A replacement windshield needs to have the correct specifications and camera mounting position. After installation, vehicles that require ADAS calibration need to be properly calibrated according to the appropriate procedures.

This doesn't necessarily mean a vehicle with ADAS must have OEM glass. There are quality aftermarket windshields designed for ADAS-equipped vehicles. It does mean that choosing the correct glass and completing the proper calibration are extremely important.

At Master Glass Auto Glass, we consider the vehicle's equipment when determining the appropriate replacement rather than treating every windshield as interchangeable.

Does OEM Glass Fit Better?

OEM glass should closely replicate the windshield originally installed in the vehicle, which can provide additional confidence when dealing with complex fitment or vehicle-specific technology.

Quality aftermarket manufacturers, however, can also produce excellent-fitting replacement windshields.

Problems are more likely to arise when the focus is simply on finding the cheapest available piece of glass. Poor fitment or installation can contribute to wind noise, water leaks and other issues.

The quality of the glass matters, but the quality of the installation matters just as much.

A premium windshield installed incorrectly isn't a good windshield replacement.

What About Wind Noise and Acoustic Glass?

Some vehicles use acoustic windshields designed to reduce road, wind and exterior noise entering the cabin.

If your original windshield has acoustic properties, replacing it with glass that doesn't have equivalent characteristics could potentially change how quiet the vehicle feels.

Other windshield features can include rain sensors, heating elements, antenna components, heads-up display compatibility and specialized coatings.

That's why matching a windshield isn't always as simple as searching by year, make and model. Two vehicles that look almost identical can require different glass depending on their equipment.

Is OEM Glass More Expensive?

Generally, yes.

OEM windshields can cost considerably more than aftermarket alternatives, although the difference varies by vehicle.

For someone paying out of pocket, that price difference may make a quality aftermarket windshield attractive. If you're replacing your windshield through insurance, your coverage and the circumstances of the claim may also affect which glass options are available.

For BC drivers using ICBC coverage, we can help explain the available options before the replacement takes place.

So, Is Aftermarket Glass Just as Good?

Sometimes, yes.

A high-quality aftermarket windshield that's correctly specified for the vehicle, professionally installed and properly calibrated where required can be an excellent replacement.

But aftermarket glass isn't one single product or quality level. Neither is every vehicle equally sensitive to differences in windshield construction.

For a relatively simple vehicle without windshield-mounted technology, there may be very little practical reason to pay substantially more for OEM glass.

For a newer vehicle with a heads-up display, acoustic glass, multiple sensors or a sensitive camera-based ADAS system, OEM glass or a particular replacement specification may be worth considering.

The decision should be based on the vehicle rather than a blanket rule.

The Installation Is Just as Important as the Glass

Customers understandably spend a lot of time thinking about the name printed on their new windshield. We think it's equally important to think about who's installing it.

Proper windshield replacement involves removing the damaged glass correctly, preparing the mounting surface, using the appropriate materials and procedures, installing the new windshield accurately and allowing the adhesive system to set properly.

When ADAS calibration is required, that's another important part of completing the job correctly.

Your windshield isn't simply there to keep bugs and rain out of the vehicle. It's an important structural and safety component, and on many modern vehicles it's also closely connected to some of the vehicle's most advanced safety technology.

OEM vs. Aftermarket: The Quick Answer

If you're trying to decide, keep these points in mind:

• Aftermarket does not automatically mean lower quality.

• OEM isn't necessarily required for every vehicle.

• Your vehicle's ADAS, heads-up display, acoustic glass and other technology can influence which windshield is appropriate.

• Quality of installation is every bit as important as choosing the right glass.

• ADAS-equipped vehicles may require calibration following windshield replacement.

• The best choice depends on your specific vehicle, coverage and budget.

Not Sure Which Windshield Your Vehicle Needs?

You don't need to become an auto glass expert before booking an appointment.

At Master Glass Auto Glass, we'll identify the correct windshield options for your vehicle and explain the differences when there is a meaningful choice to make. If you're using ICBC coverage, we'll also help with the insurance paperwork and explain how your coverage applies.

Our goal isn't to automatically sell you the most expensive windshield. It's to make sure you're getting the right glass, installed correctly, with the appropriate calibration for your vehicle.

If your windshield is cracked or damaged, contact Master Glass Auto Glass in the Okanagan and we'll help you figure out the best way to get it replaced.