Reviewed by the AtozInsuranceusa editorial team.
Car insurance can pay for OEM parts after a covered crash, but a standard policy does not always promise new factory parts for every repair. Payment depends on your policy, state rules, vehicle, repair needs, and any OEM parts endorsement you bought before the loss.
OEM means original equipment manufacturer. These parts come from the vehicle manufacturer’s parts system.
Your insurer may approve OEM parts when they meet the covered repair requirements. It may also write an estimate using eligible aftermarket, recycled, or reconditioned parts.
Progressive explains that repair estimates can include OEM parts, while a promise to use only OEM parts generally requires specific coverage. Its auto offerings differ from its motorcycle offerings.
Before repairs begin, ask:
- Does my policy include an OEM endorsement?
- Which parts does the estimate specify?
- Are those parts new, used, or reconditioned?
- Does a manufacturer procedure support the requested part?
- What would I owe if I choose a costlier part?
- Who will request approval for any changes?
Choosing OEM parts does not automatically make the insurer pay the full price. Confirm both the repair choice and payment approval in writing.
If someone else caused the crash, ask that driver’s insurer about its obligations under state law. Your own OEM endorsement does not automatically bind another person’s insurer.
What Are OEM Parts?
OEM parts come through the vehicle manufacturer’s parts system and match that manufacturer’s specifications for the intended vehicle application.
They can include body panels, lamps, brackets, glass, sensors, and other components.
Ask for the exact part number. A brand name alone does not confirm that a part fits your model, trim, options, and build date.
Also ask whether the estimate specifies a new OEM part. A recycled part may have started as original equipment, yet it is not new.
| Parts category | General meaning | What to check |
| New OEM | New part supplied through the vehicle manufacturer’s parts system | Part number and correct application |
| Aftermarket replacement | New replacement from an independent parts maker | Fit, quality, function, and applicable standards |
| Recycled or salvage | Used part from another vehicle | Source, condition, damage, and suitability |
| Reconditioned or remanufactured | Previously used component that has undergone restoration work | Process, testing, warranty, and permitted use |
Progressive distinguishes new aftermarket parts from used parts, which a policy may also allow in repair estimates.
Why Would an Insurer Approve Non OEM Parts?
The insurer evaluates what the policy and state rules require it to pay for a covered repair.
Its estimate may reflect parts that it considers suitable for returning the vehicle to its condition before the loss. Price and availability can affect the proposal.
Do not assume the cheapest part meets the required standard. Also avoid assuming all aftermarket parts are unsafe.
Review the actual component and its intended use.
For example, a dispute about a cosmetic panel may raise different questions from a dispute about a component used near a radar sensor.
Ask the adjuster to identify the proposed part, supplier, condition, and reason for using it. Then have the shop explain any specific problem.
Evidence about the part is more useful than a general argument about brands.
Does Full Coverage Guarantee OEM Parts?
No. Ask for the actual coverage documents.
“Full coverage” does not establish a promise to install only factory parts. The relevant terms may appear in the physical damage coverage, limits of liability, repair provisions, or endorsements.
Look for language addressing:
- Repair or replacement.
- Parts of like kind and quality.
- New versus used components.
- OEM parts.
- Vehicle age or mileage limits.
- Availability and exclusions.
If the wording is unclear, ask a licensed agent or claims representative to identify the controlling provision.
A quote screen or general sales phrase may leave out conditions that appear in the policy.
Keep the declarations page and endorsement with your claim records. Confirm that the coverage was in force when the crash happened.
What Does an OEM Parts Endorsement Cover?
An endorsement changes the policy’s terms. An OEM endorsement may broaden payment for original manufacturer parts in a covered repair.
It does not turn an excluded event into a covered crash. It may also include limits on vehicle age, part availability, or the components it covers.
Farmers lists OEM or new original parts coverage that pays for original manufacturer parts, if available, in covered repairs. Its public description lists availability for cars up to 10 years old. Eligibility and policy terms still need confirmation.
Before buying, ask:
- Does my vehicle qualify?
- Does coverage end at a certain age?
- Does it include glass and electronic components?
- Must the part be available from the manufacturer?
- Does my normal deductible still apply?
- What happens if the insurer declares a total loss?
Compare the endorsement’s cost and terms with your needs. Do not assume all insurers offer the same benefit.
Can I Demand OEM Parts Under State Law?
State rules differ. Some address disclosure, consent, repair standards, or the insurer’s payment obligations.
Avoid relying on a nationwide claim that insurers must always pay for OEM parts.
California’s Parts Standards
California’s insurance department explains standards for non OEM replacement crash parts. These include equality in kind, quality, safety, fit, and performance, along with requirements concerning modifications, identification, disclosure, and insurer warranties.
That rule does not create a blanket promise of new OEM parts for every repair.
If a proposed part does not fit or function properly, ask the shop to document the problem and request a revised estimate.
Texas’s Choice and Payment Rules
Texas’s consumer bill of rights says drivers may choose their repair shop and parts, while insurers need not pay more than a reasonable amount.
The right to choose and the amount an insurer must pay are related but separate questions.
For your state, check the insurance department’s current guidance and your policy before approving a price difference.
What if Manufacturer Repair Procedures Call for OEM Parts?
Ask the shop to provide the current procedure or position statement for your exact vehicle and repair.
Manufacturer guidance can supply evidence about safe methods and component requirements. It does not, by itself, resolve all insurance coverage questions.
A useful request identifies:
- The damaged part.
- The vehicle’s equipment.
- The relevant procedure.
- The reason the proposed alternative does not meet the repair need.
- The requested part and labor change.
For example, General Motors’ September 2026 position statement rejects aftermarket bumper fascias for GM vehicles equipped with ADAS. It describes concerns about material specifications and system performance.
That is the GM’s position for the described repair. Do not extend it to all parts on all makes.
Have the shop send the supporting document to the adjuster and request a written decision.
How Do Sensors and Calibration Affect the Repair?
Advanced driver assistance systems, or ADAS, can involve cameras, radar, brackets, glass, and body components.
The repair question may involve more than whether a panel looks correct. Ask about required scans, inspections, aiming, and calibration.
American Honda’s July 2025 statement describes diagnostic scans and situations requiring safety system inspection or calibration after qualifying collision repairs. It also says the absence of warning lights does not establish that scans are unnecessary.
Use the manufacturer’s procedure for the vehicle.
AAA’s 2023 research evaluated three model year 2023 vehicles in several repair scenarios. It reported that ADAS could add up to 37.6% to total repair costs. That finding illustrates potential costs in the study, rather than a current price estimate for all cars.
Ask the shop to list required operations separately in the estimate.
For background, read whether insurance covers sensor calibration after an accident.
Can I Pay the Difference for OEM Parts?
You may be able to choose OEM parts and pay an agreed difference, but first confirm whether the insurer should cover the requested part.
Do not accept an upgrade charge before resolving a documented fit, safety, or policy issue.
Here is a hypothetical example:
| Repair payment detail | Example amount |
| Insurer’s approved covered repair estimate | $3,000 |
| Your deductible | $500 |
| Insurer’s payment | $2,500 |
| Agreed OEM substitution above the approved estimate | $350 |
| Your total share under these assumptions | $850 |
The additional $350 differs from your deductible.
Ask whether it includes extra labor, tax, or freight. Confirm the total before ordering.
If the insurer later approves the OEM part as part of the covered repair, request a revised breakdown.
Read our guide to choosing a $500 or $1,000 deductible when planning for future claim costs.
Will Aftermarket Parts Void My Factory Warranty?
Using aftermarket or recycled parts does not automatically void the whole vehicle warranty.
The FTC explains that a manufacturer or dealer may deny coverage for damage that a defective part or improper installation caused. It must establish that connection before denying warranty coverage on that basis.
Separate three questions:
- Does insurance cover the crash repair?
- Does the repair follow the vehicle’s requirements?
- Does a later defect qualify under the factory warranty?
A warranty does not determine all insurance payment duties. An insurance approval does not settle all warranty questions either.
Keep part numbers, invoices, procedures, and repair records. Ask for written reasons if someone claims the entire warranty disappears because a non OEM part appears on the estimate.
What if My Car Is New, Financed, or Leased?
A new car can justify careful review, but its age alone does not establish nationwide OEM entitlement.
Check the policy and any endorsement.
For a financed or leased car, also read the contract. Ask whether it requires particular repairs, documentation, or condition at return.
Do not assume the insurer must fund every requirement in a separate lease agreement.
Before authorizing work, ask:
- Does the lender or lessor need to endorse payment?
- Does the agreement specify parts requirements?
- Will the proposed repair satisfy those requirements?
- Who pays any difference the insurer does not cover?
Resolve conflicts early. A conversation between the shop, insurer, and vehicle owner can clarify the approved plan.
For related issues, read what happens when you crash a financed car with insurance.
Can I Choose a Dealer or a Different Repair Shop?
Ask about your state’s shop choice rules and the insurer’s payment terms.
Texas’s consumer bill of rights recognizes a driver’s right to choose the repair shop.
Choosing a dealer does not automatically create OEM coverage. Ask what parts the shop plans to use and which charges the insurer has approved.
Get a written estimate before repairs begin. The FTC recommends identifying parts and expected labor, with approval before work exceeds an agreed amount.
Ask who will submit a supplement if the shop discovers additional covered damage.
Do not rely on a verbal promise that “insurance will handle it.” Confirm any possible balance you would owe.
What Should I Do if the Proposed Part Does Not Fit?
Tell the shop and adjuster before accepting the repair.
Ask the shop to document:
- The proposed part number.
- The fit or function problem.
- Photos and measurements when useful.
- Any manufacturer procedure involved.
- Attempts to resolve the issue.
- The proposed replacement and added cost.
Request a supplement or revised estimate.
If the insurer specified the part, ask what warranty or remedy applies under your policy and state rules.
California’s guidance, for example, requires insurers specifying qualifying non OEM crash parts to warrant the stated standards.
Do not treat misaligned panels, loose components, or warning lights as an acceptable result. Ask a qualified professional to assess the issue before driving.
How Do I Challenge an OEM Parts Denial?
Start with a focused written request. Identify the part and the reason you believe payment should change.
Attach:
- The relevant policy or endorsement.
- The insurer’s estimate.
- The shop’s explanation.
- Photos or fit documentation.
- Applicable manufacturer guidance.
- The requested price and labor changes.
Ask whether the denial concerns coverage, price, availability, or technical need.
Then request a supervisor’s review if the explanation does not resolve the issue.
Your state insurance department may help with claim handling concerns. A coverage or payment dispute may also require licensed legal advice.
Read what to say to an insurance adjuster after a crash for help preparing the discussion.
Keep deadlines in view while you seek review.
Is OEM Coverage the Same as Coverage for Custom Parts?
No. Replacement parts sourcing and protection for vehicle modifications answer different questions.
OEM coverage concerns the parts used in covered repairs.
Custom equipment coverage concerns items such as added wheels, audio equipment, or other modifications, subject to the policy.
Farmers list OEM coverage and customized equipment as separate options.
Tell your insurer about modifications before assuming the standard policy protects their value.
Ask how the insurer would replace an upgraded part after a covered crash. Original factory equipment may not match the modification you added.
Our guide to insurance for aftermarket parts and modifications explains related questions.
How Can I Compare OEM Coverage Before Buying?
Request the endorsement wording and a quote for the same vehicle and coverage limits.
Compare:
| Policy feature | What to verify |
| Vehicle eligibility | Age, model, mileage, and state restrictions |
| Covered components | Whether glass, body parts, and electronics qualify |
| Parts condition | New OEM versus used original parts |
| Availability | What happens when the manufacturer cannot supply a part |
| Claim costs | Deductible and any other limits |
| Coverage duration | When eligibility ends |
| Repair process | Documentation and approval requirements |
Ask for answers tied to your policy. A general advertisement may leave out restrictions.
Choose based on the full policy cost and the value of the benefit to you. Do not assume a lower premium includes the same repair terms.
Frequently Asked Questions
Can I Get OEM Parts Without an OEM Endorsement?
Possibly. A standard estimate may include OEM parts because of the repair need, vehicle, available parts, or applicable rules. That does not establish a promise of OEM parts throughout the repair. Ask about each disputed component and the basis for payment.
Does the Other Driver’s Insurance Have to Pay for OEM Parts?
Its duties depend on state law, liability, the required repair, and available coverage. Your own OEM endorsement does not automatically bind that company. Provide evidence of why a specific part is necessary and request its decision in writing.
Does a Certified Aftermarket Part Guarantee a Correct Repair?
Ask what the certification covers and whether the exact part suits your vehicle. Certification does not answer every question about installation, system function, or manufacturer procedures. Have the shop document the repair method and any required tests.
Can I Add OEM Coverage After a Crash?
Ask about coverage for future losses. A later policy change does not rewrite the terms in force when the crash occurred. Check your existing documents before assuming you lack coverage, and give the insurer accurate loss details.
What Happens if the OEM Part Is Unavailable?
Ask the shop and insurer to explain the options under your policy. Review any alternative part, repair method, delay, and possible rental cost. An OEM endorsement may include availability conditions. Do not approve an unsuitable substitute simply to finish faster.
Does OEM Coverage Prevent a Total Loss Decision?
It does not promise that the insurer will repair the vehicle. The policy’s settlement terms and state rules still matter. Ask how any OEM estimate affects the total loss evaluation and what valuation applies if repairs do not proceed.
What Should You Do Next?
Read the estimate, identify the proposed parts, and check your policy for OEM coverage. Ask the shop to support any technical need with vehicle specific procedures, then confirm payment before authorizing changes.
AtozInsuranceusa encourages you to compare repair terms alongside price when reviewing insurance. For an active claim, get written answers about parts, required procedures, and any amount you would owe before the shop begins work.
References and Sources
- Progressive: OEM, aftermarket, and used replacement parts
- Farmers: OEM and new original parts coverage
- California Department of Insurance: Replacement crash parts standards
- Texas Department of Insurance: Consumer bill of rights
- General Motors: Bumper repairs involving ADAS
- American Honda: Collision scans and calibration requirements
- AAA: Study of ADAS repair costs
- FTC: Auto warranties and replacement parts
- FTC: Auto repair estimates and approvals
