How to Identify an Auto Glass Part Number
When you're trying to order the right replacement glass, a part number or marking on your existing piece can be a helpful clue. But markings vary, and they're only one part of confirming fitment. This guide explains where to look, what the information does and doesn't tell you, and how to put it together with your vehicle details.
Where markings usually appear
Different glass pieces carry markings in different places. Common spots to check include:
- Windshields and larger glass: markings are often etched or printed in a lower corner of the glass.
- Side mirror glass: look on the back of the reflective glass or on the backing plate, where numbers or codes are sometimes present.
- Packaging and labels: if you still have the original box or a label from a prior replacement, it may list a reference number.
Not every piece has an obvious, readable number, and formats differ from one source to another, so don't be discouraged if what you find looks unfamiliar.
What a part number does — and doesn't — tell you
A marking on the glass can help a knowledgeable seller cross-reference the correct replacement, but on its own it isn't a guarantee of fit. It should be combined with your vehicle details rather than used in isolation. Treat any number you find as a useful reference point to share, not the final word.
Start with your vehicle details
The foundation of any glass search is your exact vehicle: model year, make, model and trim. These confirm compatibility, and they're often more reliable than a partial or worn marking. If you're replacing a side mirror, our guide on finding the correct replacement mirror glass walks through matching side and features step by step.
Use your VIN
Your Vehicle Identification Number (VIN) reflects how your vehicle was built and can help confirm your configuration when a marking is missing or unclear. Having your VIN ready makes it easier for our team to match the correct listing.
Photos make it easier
Clear photos of any markings — plus the feature side of a mirror or the sensor area of a windshield — often tell us more than a transcribed number alone. If a code is hard to read, a well-lit, close-up photo helps avoid transcription mistakes.
Numbers, compatibility and brand
It's worth keeping the terminology straight. A marking or reference number helps identify the part; your vehicle's name describes compatibility; and the product you buy is sold by Lecis Auto Glass as an OEM-style or aftermarket option. A vehicle name on a listing does not, by itself, mean the item is a vehicle-manufacturer branded product. If the OEM/aftermarket distinction is new to you, our OEM vs. aftermarket guide explains it.
When markings are missing or unclear
If you can't find a number, or what you find is worn or ambiguous, don't guess your way into an order. Send us your vehicle details, your VIN if you have it, and photos of the glass through our Contact & Fitment Help page, and we'll help confirm the correct replacement. You can also start from your vehicle using Find My Vehicle and browse side mirrors or windshields directly.
The takeaway
A part marking is a helpful clue, not a complete answer. Pair it with your year, make, model, trim and VIN, add photos when you can, and confirm fitment before ordering. When in doubt, ask — a quick check now is easier than a return later, and our FAQ covers many common questions.