How to Insure Custom Parts and Equipment

Last Updated on September 28, 2026 by James Shaffer

Adding custom wheels, an upgraded sound system, specialty paint, performance equipment, or other modifications can substantially increase what you have invested in your vehicle. The important question is whether your auto insurance will pay for those additions if the car is damaged or stolen.

You do not automatically need a separate specialty insurance policy just because your car has custom parts. Depending on the insurer and policy, a standard auto policy may provide some coverage for aftermarket equipment, or you may be able to add custom parts and equipment coverage to increase the amount protected. Heavily modified or unusually valuable vehicles may require a specialty policy.

What Coverage Do You Need for Custom Parts and Equipment?

The first thing to understand is that custom equipment coverage does not replace your normal New York auto insurance policy.

New York requires registered vehicles to carry liability, No-Fault (PIP), and uninsured motorists coverage. The New York State Department of Financial Services explains the state’s required and optional auto insurance coverages.

Your required liability coverage protects against covered injuries or property damage for which you are legally responsible; it does not pay to replace custom parts on your own vehicle. New York’s mandatory uninsured motorist coverage is also bodily-injury protection and does not insure custom equipment on your car.

For damage to your own car, the more relevant coverages are usually collision coverage and comprehensive coverage. Collision generally addresses covered crash damage, while comprehensive covers specified non-collision losses such as theft, vandalism, fire, and certain weather-related damage.

The problem is that a standard policy may not insure owner-added equipment for its full value. Some insurers provide a limited amount of coverage automatically, while others require an endorsement or other optional coverage. The terminology also varies. One company may call it custom parts and equipment (CPE) coverage, while another may use terms such as customized equipment, additional equipment, or accessories coverage.

How Custom Parts and Equipment Coverage Works

Custom parts and equipment coverage is generally designed to increase the amount of physical damage protection available for permanently installed equipment or modifications that were not part of the vehicle as originally manufactured.

Examples can include:

• Custom wheels and rims
• Aftermarket audio or entertainment systems
• Navigation or electronic equipment
• Custom paint or exterior finishes
• Body kits and spoilers
• Custom upholstery or interior modifications
• Suspension modifications
• Performance-related equipment
• Other permanently installed accessories

Exactly what qualifies depends on the insurer and policy. Coverage limits, deductibles, eligible modifications, and settlement methods can differ significantly.

For example, Progressive explains that modified vehicles may be insured through supplemental custom-equipment coverage or, in some situations, a separate specialized policy. This is an example of one insurer’s approach rather than a rule that applies to every New York policy.

Aftermarket Parts and Custom Modifications Are Not the Same Thing

The term “aftermarket parts” can cause confusion because it is used in two different contexts.

Aftermarket replacement parts are new replacement components produced by a company other than the vehicle’s original manufacturer. An insurer or repair shop might use these parts to repair a vehicle after a covered accident.

Custom modifications are changes you intentionally make to alter the appearance, performance, equipment, or value of your vehicle, such as adding custom wheels or installing an upgraded stereo.

These are separate insurance issues. If you are concerned about what type of replacement components an insurer may use when repairing your car, read our guide to OEM parts coverage.

Does Comprehensive and Collision Insurance Cover Custom Parts?

It depends on the policy. Comprehensive and collision coverage are the starting point for protecting your own vehicle, but they do not necessarily mean every modification is insured for its full replacement cost.

Some policies include a limited amount of coverage for custom or aftermarket equipment. Others may exclude certain equipment or require you to purchase an endorsement before additional value is covered.

The cause of the loss matters as well. For example, qualifying custom equipment could potentially be included in a covered vehicle theft or vandalism claim under comprehensive coverage, subject to the policy’s terms, limits, deductible, and any applicable custom-equipment endorsement.

Damage from a collision would ordinarily fall under collision coverage rather than comprehensive. Adding custom equipment coverage does not convert an otherwise excluded loss into a covered one; the underlying cause still has to be covered by the policy.

Should You Tell Your Insurance Company Before Modifying Your Car?

Yes. Contact your insurer before making a significant modification whenever possible. This gives you a chance to determine whether the modification is acceptable under the insurer’s underwriting rules and whether you need to change your coverage.

Ask questions such as:

• Is this modification acceptable under my current policy?
• Does my policy already provide any coverage for it?
• What is the maximum amount the policy will pay for custom equipment?
• Do I need an additional coverage endorsement?
• Will adding the modification change my premium?
• Will you need receipts, photographs, an inspection, or an appraisal?
• How would the modification be valued if the vehicle were totaled?

This is particularly important for expensive performance modifications or extensive body, suspension, or drivetrain changes. An insurer may accept some modifications while declining to insure others.

What Happens if You Do Not Tell Your Insurer About Modifications?

The original version of this article stated that a claim would likely be denied simply because a vehicle had undisclosed modifications. That is too broad. The outcome depends on the policy, what was modified, what information the insurer requested, and how the modification relates to the claim.

One common problem is much simpler: the insurer may not owe the full value of an upgrade that was never properly insured. The policy might provide only limited coverage for aftermarket equipment, meaning you could be responsible for the difference.

More serious issues can arise if an applicant makes a material misrepresentation when applying for coverage. New York DFS states that, after the initial 60-day period of a new personal auto policy, discovery of fraud or a material misrepresentation in obtaining the policy or presenting a claim is one of the limited grounds that can permit mid-term cancellation. You can review the state’s rules in the DFS automobile insurance FAQs.

That does not mean forgetting to report every accessory automatically constitutes fraud or material misrepresentation. The facts and policy language matter. If your insurer disputes coverage after a loss, review the written explanation and your policy rather than assuming that the entire car insurance claim has been properly denied.

Are All Vehicle Modifications Legal in New York?

No. Insurance coverage and vehicle legality are separate issues. A modification can create problems even if you are willing to pay to insure it.

Vehicles registered in New York generally must meet the state’s safety and emissions inspection requirements. The New York DMV inspection program checks items such as steering and suspension components, tires, lighting, brakes, and required emissions equipment.

Other New York requirements can affect equipment such as window tint, exhaust systems, lighting, and certain safety components. Before making a major modification, confirm that the finished vehicle can legally be operated and pass required inspections.

When Might You Need Specialty Insurance?

A standard policy with additional custom-equipment coverage can be sufficient for many moderately modified vehicles. However, an endorsement may not provide enough protection when a car has extensive modifications or a value that is difficult to establish using ordinary vehicle valuation methods.

You may want to ask about specialty coverage if:

• You have invested a large amount of money in modifications.
• The vehicle has significant engine, drivetrain, suspension, or body modifications.
• The car is a show, collector, exotic, or specialty vehicle.
• The available custom-equipment limit is substantially below the value of your modifications.
• A standard insurer will not accept the vehicle because of its modifications.

If considering specialty insurance, pay close attention to how a total loss is valued. Terms such as actual cash value, stated amount, and agreed value can produce very different claim settlements. Do not rely on the label alone; ask the insurer to explain exactly how the policy determines the amount payable after a total loss.

How to Document Custom Parts and Equipment

Good documentation is especially important with a modified vehicle because standard vehicle valuation databases may not reflect everything you added.

Keep records such as:

• Purchase receipts for parts and equipment
• Installation invoices
• Before-and-after photographs
• Photos showing individual modifications clearly
• Serial numbers for expensive electronics or equipment
• Any appraisal requested or accepted by the insurer
• Written confirmation of the custom-equipment coverage and limit

Store copies somewhere other than inside the vehicle so they remain available if the car is stolen or severely damaged.

How to Find Insurance for a Modified Car

Start by asking your current insurer exactly how it handles aftermarket equipment. You may be able to add the necessary protection without replacing your entire policy.

If your insurer does not provide enough coverage, compare several car insurance companies. Do not compare premiums alone. For a modified vehicle, the policy’s custom-equipment limit, exclusions, valuation method, deductible, and eligibility rules can be just as important as the price.

An independent insurance agent or broker can also be useful when the vehicle falls outside the underwriting guidelines of mainstream insurers. Explain the modifications accurately and provide an estimate of what you have invested so the producer can look for appropriate coverage.

Before purchasing a policy, confirm in writing which modifications are covered and the maximum amount available. Continue updating your insurer as you add expensive equipment so your coverage does not fall behind the value of the vehicle.

FAQs on Insurance for Custom Parts and Equipment