Does Car Insurance Cover Aftermarket Parts and Modifications

Reviewed by the AtozInsuranceusa editorial team. 

Car insurance may cover aftermarket parts and modifications, but a standard policy may not protect their full value. You may need custom parts and equipment coverage, an endorsement, or a specialty policy. Tell your insurer about upgrades before installation and confirm the coverage, limits, and deductible in writing.

The cause of damage still matters. Collision coverage generally handles crash damage. Other than collision coverage generally handles theft, vandalism, and weather losses. An equipment endorsement does not turn ordinary wear or mechanical failure into a covered accident.

There is also a distinction between insuring upgrades you added and using aftermarket replacement parts during repairs. A replacement bumper from another manufacturer does not necessarily make your car a custom build.

Progressive’s modified car guide explains why upgrades can require extra coverage.

Before spending money, ask whether the insurer accepts the planned changes and how it would value them after a loss. Receipts help prove what you bought, but they do not guarantee reimbursement. State laws and policy terms affect the outcome.

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What are aftermarket parts and vehicle modifications?

An aftermarket part comes from a company other than the vehicle manufacturer. It may serve as an ordinary replacement or change the car’s appearance, function, or performance.

The Federal Trade Commission uses this definition in its auto warranty guidance.

Consider these examples:

Item or changeMain distinctionQuestion for your insurer
Replacement brake pads matching normal specificationsRoutine replacementDoes this require any policy update?
Custom wheels worth more than the originalsAdded equipment valueWhat limit protects the wheels?
A suspension liftChange to vehicle setupDoes the insurer accept the modification?
A turbocharger or engine tunePerformance changeDoes this affect eligibility?
Custom paint or a body kitAppearance and value changeHow would the insurer value repairs?
Factory options supplied with the carOriginal vehicle equipmentDoes the vehicle description reflect them?

The insurer’s definitions control. Ask before assuming that every nonfactory part needs identical treatment.

Does a standard policy cover custom equipment?

It might include some protection, but the amount and eligible equipment vary. Do not assume the car’s overall coverage automatically includes every upgrade.

Your policy may limit certain equipment, require an endorsement, or exclude modifications the insurer does not accept.

Ask for answers to three questions:

  • Does the insurer agree to insure the car with these changes?
  • Does the policy cover damage to the added equipment?
  • What amount would the insurer use to settle a claim?

These are separate questions. Acceptance of the car does not necessarily mean the insurer will pay the full purchase price of each upgrade.

Ask the agent to identify the relevant policy section. A general statement such as “you have full coverage” does not establish a custom equipment limit.

Keep the written response with your policy documents.

What is custom parts and equipment coverage?

Custom parts and equipment coverage, often called CPE, adds protection for qualifying upgrades. It can address items such as custom wheels, installed audio equipment, or a special paint job.

Progressive states that its CPE coverage typically has a $5,000 limit. This is a published insurer example, not a nationwide standard. Other insurers, products, and states may differ. See Progressive’s coverage descriptions.

Before buying the endorsement, ask:

  • Which items qualify?
  • Is the limit per vehicle or per loss?
  • Does the limit include installation labor?
  • Does depreciation apply?
  • Which deductible applies?
  • Does the limit add to or include any existing equipment allowance?

An endorsement protects against the covered causes listed in the policy. It does not necessarily cover every failure involving an upgraded part.

Review the actual wording rather than relying only on the abbreviation.

How much equipment coverage should you request?

Build an inventory before choosing a limit. Include each part, its current replacement cost, and any installation expense the insurer agrees to cover.

For example, suppose your inventory includes:

UpgradeHypothetical documented cost
Wheels$2,000
Installed audio system$1,500
Custom paint work$3,000
Total$6,500

A $5,000 equipment limit would be $1,500 below that total, even before any applicable deductible or valuation adjustment.

This example shows a possible coverage gap. It does not predict a settlement.

Ask the insurer whether it values equipment at purchase cost, current value, replacement cost, or another amount. Some spending may not qualify.

Update the inventory when you add or remove equipment. A limit that suited the car last year may no longer match the build.

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Which coverage applies when a modified part suffers damage?

The part and the cause both matter. Custom equipment protection generally works with the underlying vehicle damage coverage.

What happened?Coverage to investigateImportant distinction
A crash damages approved custom wheelsCollision and equipment provisionsThe equipment limit may apply
Someone steals an installed stereoOther than collision and equipment provisionsInstalled equipment differs from loose belongings
Hail damages custom paintOther than collision and equipment provisionsRepair scope and valuation matter
A tire wears outUsually maintenanceWear differs from accidental damage
An upgraded part fails without a covered eventWarranty or other applicable contractEquipment coverage is not a general repair plan

For tire questions, review when car insurance covers tires.

Describe the event accurately. Do not assume that an expensive part receives coverage simply because you listed it on an inventory.

Do you need to tell the insurer about modifications?

Tell the insurer before making a material change. Give enough detail for it to assess the actual work.

For a suspension change, describe the equipment and intended height change. For an engine upgrade, describe the components and any performance changes you know.

Ask whether the insurer needs photos, an inspection, receipts, or an appraisal. Confirm any premium change and the effective date of added coverage.

Do not assume that telling the agent automatically adds an endorsement. Request updated documents.

Failure to disclose relevant changes can create coverage or eligibility problems. The result depends on the application, policy, facts, and state law. Avoid treating nondisclosure as either harmless or an automatic cancellation of every benefit.

If you already installed upgrades, contact the insurer now and provide a complete list.

Are performance modifications harder to insure?

They can be. Changes to power, suspension, or vehicle structure may affect an insurer’s willingness to accept the car.

A company that accepts upgraded wheels may treat an engine swap differently. Another insurer may specialize in certain custom vehicles.

Before installation, ask whether the planned work falls within the insurer’s rules. Do not rely on a quote for the unmodified version of the car.

Useful details include:

  • The exact parts and work involved.
  • Who will install them.
  • Intended road, recreational, or event use.
  • Current and planned vehicle value.
  • Any inspection documents.

Hagerty describes several types of eligible custom builds in its modified vehicle insurance overview. Acceptance still depends on underwriting and policy terms.

Insurance approval also does not establish that a modification meets every road use requirement.

How do actual cash value, stated value, and agreed value differ?

These terms can produce different total loss outcomes.

Valuation methodGeneral meaningWhat to confirm
Actual cash valueVehicle value immediately before the lossHow modifications affect that value
Stated value or stated amountA declared amount that may act as a ceilingWhether the insurer can pay a lower actual cash value
Agreed valueA value that insurer and owner agree to insureCovered loss terms, deductible, and adjustments

Hagerty explains that stated value can permit payment of the stated amount or actual cash value, whichever is lower. Its valuation guide distinguishes this from agreed value.

Do not assume a number on a quote guarantees that amount after a total loss. Read the settlement provision.

Ask how the insurer will treat added equipment and whether its value sits within the vehicle amount or under a separate limit.

Will insurance reimburse everything you spent on the build?

Not necessarily. Your total investment and the insured value may differ.

A receipt proves a purchase, but the policy determines whether the item qualifies and how the insurer values it. Labor, used parts, discontinued equipment, and custom fabrication need particular attention.

Ask the insurer how it would settle a loss involving an item that no longer has an exact replacement.

For a substantial build, ask whether an appraisal would help establish the insured value. Confirm who may prepare it and what records the insurer requires.

Do not add the vehicle settlement and every equipment receipt together without checking the policy. That could count the same value twice.

Keep value discussions separate from sentimental value. The hours you devoted to a project matter personally, but they do not automatically create an insurance payment.

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Can you use collector insurance for a modified daily driver?

Not always. Specialty coverage may fit a custom vehicle but carry restrictions that conflict with commuting.

Hagerty’s published program, for example, permits specified collector use but does not accept the insured collector car as a daily driver. Its qualification guidelines also address storage and regular use vehicles.

Ask about:

  • Commuting and errands.
  • Annual mileage expectations.
  • Storage arrangements.
  • Who may drive.
  • Business use.
  • Track or other organized events.

Do not describe a daily commuter as an occasional hobby car to obtain a lower price.

If you need one vehicle for both work travel and recreation, say so. Compare policies that accept your actual use.

A lower premium does not help if the policy’s permitted use conflicts with your routine.

Does modification coverage include racing or track events?

Do not assume it does. Permission to insure a modified car for road use does not establish coverage during a race or track session.

The Texas Department of Insurance’s auto guide identifies racing among common policy exclusions.

Tell the insurer the exact activity: competitive racing, timed runs, driver instruction, or another event. Ask for a written answer under the policy.

If you need separate event coverage, check what it protects. Damage to your car, injury liability, and damage to a track may require different benefits.

Confirm any exclusions before attending. An event organizer’s insurance does not automatically protect your personal vehicle.

Do not assume that calling an event “practice” changes the policy’s definition.

Are aftermarket replacement parts the same as custom upgrades?

No. Insurers may approve aftermarket replacement parts during a covered repair even when the car has no custom upgrades.

For example, replacing a damaged factory style bumper with a suitable part from another supplier differs from adding a custom body kit.

Whether an insurer must pay for original equipment manufacturer parts depends on the policy, applicable state rules, and repair requirements.

Ask the repair shop to identify proposed parts and explain their suitability. If you want original manufacturer parts, ask what the insurer approves and whether you would owe a difference.

Check any OEM parts endorsement separately from custom equipment coverage. One does not automatically provide the other.

Keep the estimate and approval so you can compare them with the finished repair and invoice.

Does insurance cover a failed aftermarket part?

Ordinary auto insurance generally addresses covered losses, not every mechanical failure.

If an upgraded component stops working without a covered event, check the part warranty, installation warranty, or any applicable service contract.

The FTC explains that using aftermarket parts does not by itself eliminate a manufacturer’s warranty. However, a manufacturer may deny coverage for damage it proves an aftermarket part or improper installation caused.

Warranty rights and accident insurance remain separate. Do not use an insurer’s acceptance of a modification as proof that the manufacturer must cover it.

Ask the installer for a written diagnosis and preserve the failed part if a claim needs inspection.

For a broader explanation, read whether car insurance covers repairs unrelated to accidents.

What records should you keep for modified car insurance?

Create one folder for the build and update it after each change.

Include:

  • Clear photos before and after installation.
  • Purchase receipts and part numbers.
  • Installation invoices.
  • Serial numbers where available.
  • Appraisals or inspection reports.
  • Written insurer approvals.
  • Current endorsements and equipment limits.

For used parts, keep the seller’s receipt and any records that establish the item’s identity and condition.

Photograph installed equipment rather than keeping only product images from a sales page. A product listing does not prove that the part was on your car.

Save copies somewhere you can access if the car is stolen.

Review the folder at renewal. Remove equipment you no longer own and tell the insurer about new additions.

How do you file a claim involving custom parts?

Report the event through your insurer’s official claims channel. Explain both the damage and the modifications involved.

Provide the equipment inventory, photos, receipts, and relevant endorsement. Ask the adjuster to identify the applicable limit and valuation method.

Progressive’s claim filing guide explains the general assessment process.

Before repairs begin, ask the shop to separate factory equipment from custom parts on its estimate. Identify any special labor or fabrication.

If an exact replacement is unavailable, discuss alternatives before ordering. Ask who will pay any price difference.

Keep a written record of approvals. Our guide to speaking with an insurance adjuster can help you prepare a clear account.

How can you compare modified car quotes fairly?

Give every insurer the same build list, vehicle use, drivers, and value information.

Compare more than the premium. Check equipment limits, deductibles, valuation, permitted use, and exclusions.

Ask each insurer to explain a sample loss involving your most expensive upgrade. This can reveal differences that a price comparison misses.

For a tight budget, compare deductible options only after confirming adequate equipment protection. A cheap endorsement with an insufficient limit can leave a large gap.

Confirm when coverage begins and whether the insurer needs further documents. Keep the accepted quote and compare it with the issued policy.

Review protection after major work rather than waiting until the next renewal.

Frequently Asked Questions

Does car insurance cover aftermarket wheels?

It may cover qualifying wheels after a covered loss, but custom equipment limits can apply. Tell the insurer their value and keep receipts. Ask whether the policy protects their full eligible value or only a limited amount.

Do I need to report ordinary replacement brake pads?

Ordinary equivalent replacement parts differ from performance upgrades. Ask your insurer if you are unsure about its reporting requirements. A larger brake conversion or other change to vehicle specifications deserves a separate coverage check.

Does insurance cover a stolen aftermarket stereo?

It may if the policy covers the installed equipment and theft. Limits and deductibles apply. Loose electronics can fall under different rules. Progressive explains that distinction in its vehicle theft coverage guide.

Can safety upgrades lower my premium?

Some insurers offer discounts for qualifying security or safety equipment, but no discount is automatic. Ask which devices qualify and what proof the insurer needs. The equipment’s repair cost may also affect pricing.

What if the insurer excludes my modifications?

Ask whether it can offer an endorsement or another suitable policy. If not, compare insurers that accept the build and its use. Confirm replacement coverage before ending your existing policy.

What should you remember about aftermarket coverage?

Confirm that the insurer accepts the modifications, check the equipment limit, and understand how it values a loss. Keep receipts and approvals, and distinguish accident protection from warranty repairs.

Use AtozInsuranceusa to request quotes and discuss your build with a licensed insurance provider. Compare coverage for the car you actually own and drive, including its upgrades, value, and daily use.

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