Insurance Curator When your car is damaged in an accident, the repair process hinges on one critical decision: which parts will be used to fix it. Insurance companies, repair shops, and vehicle owners frequently clash over the choice between Original Equipment Manufacturer (OEM) and aftermarket parts. Understanding this difference can save you money, preserve your car’s value, and prevent disputes during a claims repair process.
What Are OEM Parts?
OEM parts are manufactured by the same company that built your vehicle or by a supplier authorized by the automaker. These parts are identical in design, material, and fitment to the components that came on your car from the factory. When you file a claim, your insurer may approve OEM parts, but this depends on your policy and the age of your vehicle.
Key characteristics of OEM parts:
- Exact fit and performance — no modifications needed during installation
- Full factory warranty — typically 12 months or more
- Higher cost — often 30% to 60% more expensive than aftermarket alternatives
- Guaranteed quality — meets strict automaker specifications
Many drivers prefer OEM parts because they preserve the vehicle’s structural integrity and resale value. If you lease your car or have a newer model, your insurer may require OEM parts to maintain the manufacturer’s warranty.
What Are Aftermarket Parts?
Aftermarket parts are produced by third-party manufacturers that are not affiliated with the original automaker. These parts are designed to match the form and function of OEM components but are often made with different materials or manufacturing processes. Insurance carriers frequently favor aftermarket parts to reduce claim costs.
Common aftermarket part types:
- Certified aftermarket — produced under industry quality standards (e.g., CAPA in the US)
- Economy aftermarket — budget-focused with potential fit or durability compromises
- Performance aftermarket — upgrades like cold air intakes or exhaust systems
- Recycled OEM — genuine parts removed from salvaged vehicles
The insurance industry argues that certified aftermarket parts meet safety and quality benchmarks. However, many body shops and consumers report fitment issues, paint mismatch, and premature corrosion with non-OEM components.
How Parts Choice Affects the Claims Process
Your insurance policy language dictates whether the repair shop must use OEM or aftermarket parts. Standard policies generally allow aftermarket parts as long as they are “like kind and quality.” Some insurers offer OEM endorsement coverage that guarantees factory parts for a set period, typically 2 to 5 years.
Comparison of OEM vs aftermarket in claims:
| Factor | OEM Parts | Aftermarket Parts |
|---|---|---|
| Cost to insurer | Higher | Lower (15–50% savings) |
| Repair time | Often longer (supply chain delays) | Usually faster (wide availability) |
| Fitment quality | Guaranteed | Variable |
| Warranty coverage | Full manufacturer warranty | Limited (usually 90 days) |
| Impact on resale value | Preserved | May reduce value |
| Consumer satisfaction | Higher | Lower (fit/finish complaints) |
If your policy allows aftermarket parts, the insurer has the right to specify them unless you can prove they compromise safety or performance. You can request OEM parts, but you may need to pay the price difference out of pocket.
Strategies for Getting the Parts You Want
To maximize your chances of receiving OEM parts during a claims repair, follow these steps:
- Review your policy before filing a claim — check for aftermarket parts clauses
- Request an OEM endorsement when purchasing or renewing coverage
- Document the damage thoroughly with photos and detailed estimates
- Negotiate with the adjuster — cite safety concerns or prior bad experiences with aftermarket parts
- Choose a repair shop that specializes in your vehicle make
Always read the fine print. Some policies allow aftermarket parts only for cosmetic components like bumpers, while requiring OEM for structural and safety parts.
The Bottom Line on OEM vs Aftermarket
Your choice between OEM and aftermarket parts affects your claim outcome, repair quality, and long-term vehicle value. If you drive a newer car, luxury model, or have financed or leased vehicle, OEM parts are usually worth the extra cost. For older cars with high mileage, aftermarket parts may be a practical and budget-friendly solution.
Keep your car’s documentation organized with a Premium Car Registration and Insurance Card Holder to ensure you have all policy details ready when you file a claim.
Frequently Asked Questions
Does insurance pay for OEM or aftermarket parts?
Most standard policies allow aftermarket parts unless you purchase an OEM endorsement. The insurer pays the cost of whichever part type is specified in your coverage.
Can I demand OEM parts for my repair?
You can request OEM parts, but the insurer is only obligated to pay the amount specified in your policy. You may need to cover the price difference if your policy allows aftermarket alternatives.
Are aftermarket parts safe for my vehicle?
Certified aftermarket parts (such as CAPA-certified) meet industry safety standards. However, non-certified economy parts may pose fitment and performance risks.
Do aftermarket parts void my car warranty?
Using aftermarket parts during repairs does not automatically void your manufacturer’s warranty. However, if a non-OEM part causes damage to another component, the warranty may not cover that specific failure.
How do modifications affect my parts coverage?
If you have made performance upgrades or cosmetic modifications, these may be excluded from standard coverage. You should disclose all modifications to your insurer to ensure proper parts replacement after a claim.
Should I get specialized coverage for my modified vehicle?
Yes. If your car has significant modifications, standard policies may not cover aftermarket parts adequately. Specialized coverage ensures OEM or custom parts are used during repairs.