Why Does a Mercedes CLA Have Six Windshield Part Numbers?
Reviewed by the Skyview Auto Glass technical team — NWRD-, ASE- and DINITROL-trained technicians · Updated November 2026
Quick answer
Because the 2021 CLA-Class was built six different ways. In our records it comes back as six part numbers, ranging from a rain-and-light sensor with no camera to a dual camera with a head-up display. Each combination of camera, sensor, antenna and display is its own part, and nothing on the outside of the car tells them apart, so the VIN is the only way to pick.
The six 2021 CLA windshields in our records
Each row is a separate part number the catalog returns for a 2021 CLA-Class.
| Part number | What the glass carries |
|---|---|
| FW05185GTYN | Rain and light sensor, no camera |
| FW05186GTYN | Camera with a static calibration and an antenna |
| FW05187GTYN | Head-up display and a dual camera |
| FW05237GTYN | Mono camera |
| FW05381GTYN | Dual camera |
| FW05382GTYN | Dual camera and a head-up display |
Six windshields, one model year, one model name. There is no way to pick between them from the outside of the car.
What separates the six parts
The differences are not cosmetic. One variant has a rain and light sensor but no camera at all, so it needs no calibration. Another adds a forward camera with a static calibration and an antenna printed into the glass. A third carries a head-up display alongside a dual camera, which means a wedge-shaped interlayer and two camera positions. The remaining three split between a single mono camera, a dual camera, and a dual camera paired with a head-up display.
Each of those combinations changes the bracket molded into the glass, the optical zone the camera looks through, and whether a wedge interlayer is present for the head-up display. A part that seals correctly but has the wrong camera bracket will not calibrate, and a part without the wedge interlayer leaves the driver with a doubled projection. Because none of this is visible from outside, quoting a 2021 CLA without a VIN is guessing at which of the six the car was built with.
This is the clearest example in our records of why a windshield cannot be ordered from year, make and model. The same model name, the same model year, six different parts and six different jobs, with the only reliable identifier being the VIN.
The VIN is the only honest way to quote a CLA
With six part numbers behind one model year, a quote built on the name alone cannot be accurate. We pull the exact part, its camera type, its sensors and whether it carries a head-up display from the VIN, and the quote reflects the glass your specific CLA was built with. Nothing is ordered until you agree to it.
Questions about the Mercedes CLA windshield part number
How do I know which of the six CLA windshields my car has?
Only the VIN tells you. The six variants differ by camera type, sensors, antenna and head-up display, and none of it shows on the outside. We identify the exact part from the VIN before quoting. See why glass shops ask for your VIN.
Does every 2021 CLA need a camera calibration?
No. One variant has a rain and light sensor and no camera at all, so it needs no calibration. The others carry a mono or dual camera with a static calibration. Whether yours needs it comes off the part number.
What does a Mercedes CLA windshield replacement cost?
A windshield replacement runs $200 to $500+ out of pocket before tax, set by which of the six parts your CLA was built with. On the variants that carry a camera, the static calibration is bundled into the same quote rather than billed separately.
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