What Is OEM Parts Coverage?

OEM stands for Original Equipment Manufacturer — meaning the parts are made directly by your vehicle's manufacturer to exact factory specifications. OEM parts coverage is an optional endorsement you add to your auto insurance policy that instructs your insurer to use only those factory-original parts when repairing your vehicle after a covered loss.

Without this endorsement, most standard auto insurance policies allow — and often prefer — aftermarket parts. These are components made by independent, third-party companies. While they may be functionally similar, they're not made by your car's manufacturer and can vary significantly in quality, fit, and compatibility.

OEM vs. Aftermarket Parts: What's the Difference?

Understanding the distinction between these two types of parts is key to deciding whether this endorsement is right for you.

Aftermarket parts aren't inherently bad — many meet CAPA (Certified Automotive Parts Association) or NSF International standards. However, only 1 in 4 aftermarket parts has been shown to perform equivalently to OEM in quality studies. For structural, safety-critical, or tech-heavy components, that gap matters.

How Standard Policies Handle Parts — And What Changes With an Endorsement

By default, most auto insurance policies give the insurer the right to use "like kind and quality" parts, which in practice means aftermarket components. Insurers prefer this because aftermarket parts can cost 20–50% less than OEM equivalents — savings they protect, not necessarily you.

When you add an OEM parts endorsement, the dynamic shifts. Your insurer is now contractually obligated to use factory-original parts for covered repairs, as long as those parts are available. If OEM parts aren't available, some insurers will cover the cost difference to source them, while others will fall back to aftermarket.

Coverage Duration Tiers

Some insurers offer tiered OEM coverage based on your vehicle's age:

• Standard OEM Coverage — Typically applies to vehicles within the 3–5 most recent model years
• Extended/Lifetime OEM Coverage — Applies as long as OEM parts are available, regardless of model year (offered by select insurers like The Hanover)

Benefits of OEM Parts Coverage and Who Should Get It

For the right driver, OEM parts coverage can be a smart financial decision — not just a premium luxury. Here's who benefits most:

New and late-model vehicles benefit because OEM parts preserve the exact engineering and safety standards the car was built with. Leased vehicles often require OEM repairs under lease agreement terms — using aftermarket parts could result in financial penalties at lease return. Luxury vehicles (think BMW, Mercedes, or Audi) have precision engineering and proprietary technology built into components that generic aftermarket parts simply can't replicate reliably.

Electric vehicles like the Tesla Model 3 or Y are prime candidates. EV-specific components involve complex battery systems, high-voltage safety protocols, and software integration — areas where OEM parts aren't just preferable, they're often essential for safe repairs.

How Much Does OEM Parts Coverage Cost — and Which Insurers Offer It?

OEM parts coverage typically adds $5–$20 per month ($60–$240 per year) to your auto insurance premium. The exact amount depends on your vehicle's make, model, year, and your location.

Insurers That Offer OEM Parts Coverage (2026)

Not every insurer offers this endorsement in every state. Availability may also be restricted to vehicles under a certain age (commonly 5–10 model years). Always confirm with your agent whether the endorsement is available for your specific vehicle.

Is OEM Parts Coverage Worth the Cost?

Here's a simple way to think about it: if your vehicle is worth significantly more than your deductible and you plan to keep it for several more years, the added protection of OEM coverage is likely worth the premium. If you're driving an older, high-mileage vehicle, the math probably doesn't work in your favor.

Frequently Asked Questions

Does standard car insurance cover OEM parts?

No — standard auto insurance policies typically allow insurers to use aftermarket or "like kind and quality" parts when repairing your vehicle. This keeps claim costs lower for the insurer. To guarantee OEM parts are used, you must add an OEM parts endorsement (also called an OEM rider or original parts replacement coverage) to your policy for an additional premium.

Will using aftermarket parts void my car's warranty?

Under the federal Magnuson-Moss Warranty Act, a manufacturer cannot void your warranty simply because aftermarket parts were used — they must prove the aftermarket part directly caused the damage. However, this can lead to disputes and delays in warranty claims. Using OEM parts eliminates this risk entirely and keeps your warranty status clear and unambiguous.

Are OEM parts always better than aftermarket parts?

Not always. For critical safety systems, structural components, and high-tech features (especially in EVs and luxury vehicles), OEM parts are strongly recommended. For cosmetic repairs like a bumper cover or side mirror housing, a quality CAPA-certified aftermarket part may perform just as well at a lower cost. The key is knowing which components matter most for safety and long-term vehicle integrity.

Can I request OEM parts even if I don't have the endorsement?

Yes, but you'll likely pay the difference out of pocket. If your insurer approves an aftermarket part at $400 but the OEM equivalent costs $700, you would need to cover the $300 gap yourself. In some states, insurers must disclose which type of parts they plan to use so you can make an informed decision. This is where having the endorsement removes the guesswork — and the extra expense.

Which vehicles benefit the most from OEM parts coverage?

New vehicles (under 5 years old), leased cars, luxury vehicles, and electric vehicles benefit the most from OEM parts coverage. These vehicles rely on precision-engineered components that are difficult to replicate with aftermarket alternatives. EVs in particular — like Tesla models — have proprietary battery and electrical systems that require OEM parts for safe and warranty-compliant repairs. If your vehicle falls into any of these categories, the endorsement cost is usually well justified.