Your State's Aftermarket Parts Law Almost Certainly Does Not Cover Your Windshield
Short answer: the aftermarket-parts protection in your state almost certainly stops at the windshield. Not because anyone hid it, but because of how "part" is defined. Five states, read directly, and they are Georgia, Hawaii, Missouri, Nevada and Wyoming: the protected class is sheet metal or plastic, and glass is neither.
The choice-of-shop protections are the opposite. Those are written about repairing "a motor vehicle" with no parts definition to narrow them, so they do reach glass work. You can usually choose who replaces your windshield. The consent step you have for a fender does not follow you there.
The rule you think you have
Most states have something like this: before an insurer can specify aftermarket parts, parts made by someone other than the vehicle's manufacturer, it has to disclose that in the estimate, and in some states get your written consent. It is one of the few genuinely consumer-protective provisions in auto claims law, and it is widely and correctly cited.
Then you read the definition.
The definition, in five states
Wyoming is the one that says it in words rather than by omission. Its Insurance Department rule, chapter 19:
"'Part' means parts which generally constitute the exterior of a motor vehicle, including inner and outer panels. 'Part' does not mean tires, windshields, or windows."
That is as explicit as drafting gets. Windshields are named, and named to be excluded.
The other four reach the same place by definition instead of exclusion:
| State | Where | How the protected part is defined |
|---|---|---|
| Georgia | Ga. Comp. R. & Regs. 120-2-52-.05(2) | "aftermarket crash part" means non-mechanical sheet metal or plastic parts |
| Missouri | 20 CSR 100-1.050(2)(D)3.B | sheet metal or plastic parts which generally constitute the exterior |
| Nevada | NAC 686A.240(3) | "body part" means a sheet metal, plastic, or composite part |
| Hawaii | HRS 437B-1 | "crash parts" means replacement parts either sheet metal or plastic, which constitute the visible exterior of the vehicle |
Automotive glass is laminated or tempered silica. It is not sheet metal. It is not plastic. In Nevada's slightly wider formula it is not a composite either, in the sense that word carries in a body shop.
So the consent step in Wyoming, the disclosure legend in Missouri and Nevada, and Georgia's ban on requiring you to authorise aftermarket crash parts all stop before they reach the glass.
Why Hawaii is the one that settles it
Four of those five are insurance regulations. They bind the carrier, they were written by insurance departments, and you could reasonably conclude the carve-out is a quirk of how insurance regulators think about claims.
Hawaii is not an insurance regulation. HRS 437B is a repair-licensing statute; it sits under consumer affairs, it binds the shop rather than the insurer, and it was written for an entirely different purpose in a different decade. Section 437B-13 imposes a real duty: if crash, used, rebuilt or reconditioned parts are supplied, "the invoice shall clearly state that fact."
And it lands on the identical four words. Same exclusion, different register, different agency, different era.
That is what moves this from a curiosity to a pattern worth acting on. When anyone: legislator or regulator, consumer-protection or insurance, sits down to define a replaceable body part, glass is not what they are picturing. They are picturing a fender.
There is a small, almost comic confirmation in the same Hawaii chapter. The only glass-family word anywhere in HRS 437B is "windshield wiper blades", and it appears in the list of minor services that are not regulated repairs at all. Search that statute for "windshield" and the single hit means the opposite of what you were looking for.
What you do have
This is not the same as saying glass is unregulated. It is regulated somewhere else, and often better.
Anti-steering rules do reach glass. They are written about repair of "a motor vehicle" generally, with no parts definition narrowing them, so the right to choose your own shop carries over to a windshield in most states that have one. Kansas, Michigan, Oklahoma, Wisconsin, Nebraska, Maine, Montana, New Hampshire, South Carolina, Washington and West Virginia all have glass or repair-choice provisions of this kind.
Nine states go further and impose a written ADAS disclosure duty on the shop: Utah, Arizona, Florida, Kentucky, Iowa, Louisiana, Virginia, New York and Maryland. If your windshield carries a camera, that duty is the one that matters, and it is a far stronger protection than parts consent ever was.
Some states regulate the price rather than the part. West Virginia sets a floor, the insurer may not pay less than the prevailing market price. Kansas sets a cap using near-identical language to mean the opposite. Both are about glass, and neither is an aftermarket-parts rule.
Where the statute goes quiet, the manufacturer does not
The silence above is not a vacuum. If no parts-consent law reaches your windshield, the party still writing rules about it is the one holding the warranty, and some of them write those rules down in public.
Lucid published a position statement titled Glass and Glazing Repairs dated 29 July 2026, covering all models. We read the document itself, not a summary of it. Three things in it are worth a consumer's attention, because none of them is written anywhere in your state's insurance code.
The original windshield does not go back on. Lucid "approves the reuse and reinstallation of all fixed glass, except windshields and front canopy glass." The stated reason is not optical quality or leaks:
"The condition of the windshield and front canopy glass is critical for proper SRS system performance. Any windshield or front canopy glass removed during a repair must be replaced with new OEM glass."
SRS means supplemental restraint system: the airbags. Lucid does not explain the mechanism in the document and we are not going to supply one for it, but the classification is the point. A windshield has been placed in the restraint chapter rather than the trim chapter. And read the sentence for what it actually rules out: reinstalling the very glass that was on the car ten minutes ago. That is a stricter rule than anything in the aftermarket-versus-OEM argument people usually have, and it is aimed at a practice nobody's state statute mentions.
It publishes numbers you can hold a repair against. Lucid allows chip and crack repair "but limited by the following," and the limits are specific enough to check:
- Damage area smaller than 1.25 inches (32 mm)
- Impact point no more than 6 mm across (the statement also gives an imperial figure, which our text extraction could not recover from the document's embedded font)
- Inside layer of glass not affected
- No repairs within 3 inches (75 mm) of the outer edge of the glass
- No repairs within 3 inches (75 mm) of any ADAS sensor or camera
- No repair in the driver's forward field of view
It names the materials and who may calibrate. The statement specifies "BetaPrime 5504G and BetaSeal U-428 Plus as the only approved primer and adhesive on Lucid vehicles," requires the shop to "confirm compatibility between the installed glass type and the camera, rain/light sensor, and HUD," and says Lucid-trained technicians must complete the calibrations using Lucid tooling. Then it attaches a consequence: failing to follow the procedures, compatibility requirements and bonding controls "may result in denial of warranty coverage," and in that case "responsibility and liability for the repair remain with the facility that performed the work."
That last clause is the mechanism. No statute compelled any of this. A warranty did.
The limits of what this proves, stated plainly. This is one manufacturer's position statement about its own vehicles, and it is not law in any state. Lucid gives a requirement and a reason; it publishes no comparative testing, so nothing here shows that aftermarket glass performs worse, or that any other automaker's glass sits in a restraint path. Do not carry this to your Corolla. Carry the habit: find out whether your manufacturer has published a glass position statement, because it will tell you more about what your car actually needs than your state's parts-consent rule ever will, and unlike the statute it is written about glass on purpose.
Source: Lucid USA, Inc., "Glass and Glazing Repairs", 29 July 2026, published via OEM1Stop.pdf). The PDF's embedded subset font defeats ordinary text extraction; every sentence quoted above was decoded and then proved back against the document character-for-character, with known-absent sentences run as controls.
What to do with this
If you are a consumer: do not rely on your state's aftermarket-parts consent rule to control what glass goes in your car. Ask the question directly and get the answer in writing before the work. If your car has a camera behind the windshield, ask whether recalibration is required and whether it will be performed, and in those nine states the answer is legally owed to you.
If you run a shop: the disclosure you are used to giving on crash parts probably does not attach to a glass job in your state, and the disclosure that does attach may be a different one entirely. Those are separate duties in separate chapters. Check which register your state's rule sits in (insurance conduct, repair licensing, or consumer protection), because that determines who it binds and what it covers.
If you are writing about this: the aftermarket-parts rule is real law and it is frequently cited for glass claims. Citing it that way is quoting the right statute for the wrong register. It is accurate about fenders and silent about windshields, and the silence is deliberate.
How this was verified
Georgia, Missouri, Nevada and Hawaii were read directly from the states' own published texts. Wyoming's rule is the exception and we mark it as such: rules.wyo.gov is a JavaScript application whose search would not apply a keyword and whose form has no submit target we could reach, so the Wyoming quotation comes from our research pass rather than our own retrieval. It is the most quotable version of the point and the only one we have not personally opened, which is why the structural finding above rests on the four we did.
The full fifty-state map, with an evidence tier on every row, is in the auto glass disclosure guide. The same data is machine-readable at /api/glass-laws.json under CC BY 4.0.
General consumer information: not legal, insurance, or financial advice. Requirements, coverage, and practices vary by state, policy, and manufacturer.