OEM vs. aftermarket collision parts: what's on your estimate

• OEM (original equipment manufacturer) — made by or for your vehicle's manufacturer, the same parts the car was built with.
• Aftermarket (non-OEM) — made by another company to fit your vehicle. Quality ranges widely; some are certified by independent programs such as CAPA.
• Used (recycled) — genuine parts taken from another vehicle.
• Rebuilt or reconditioned — used parts that have been repaired or refurbished.

Your invoice has to identify the parts used and state whether crash parts are OEM or non-OEM aftermarket, and whether parts are new, used, rebuilt or reconditioned (Business and Professions Code § 9884.8).

When an insurer's estimate calls for non-OEM parts, California's claims regulations require those parts to be identified on the estimate and to be at least equal to OEM parts in kind, quality, safety, fit and performance.

• Fit and finish — panels that don't line up leave uneven gaps and can rattle or leak.
• Safety — reinforcement bars, brackets and structural parts affect how the car performs in a crash.
• Sensors — many bumpers and grilles hold radar and camera components that depend on precise dimensions.
• Leases and warranties — check your lease agreement or warranty terms; some call for specific parts.

1. Which parts on my estimate are OEM, aftermarket, used or rebuilt?
2. Does my insurance policy say anything about OEM parts?
3. Are any safety or structural parts non-OEM?
4. Could any of these parts affect sensor calibration?
5. Can I pay the difference to upgrade to OEM?

We walk you through exactly what your estimate calls for, flag structural and sensor-related parts where fit matters most, and explain your options before anything is ordered. Start with a free estimate or see how collision repair works with us.