If an aftermarket turbocharger lacks an EO number, what is the consequence during inspection?

• A. Passes visual inspection
• B. Requires additional EO certification
• C. Not inspected
• D. The vehicle shall fail the visual inspection

Answer: (D)

In California, emissions-related aftermarket parts must have a valid EO number showing they’re approved for use. The EO number proves the part has been tested and certified to meet emissions standards. If the turbocharger lacks an EO number, it isn’t certified for emissions compliance, so the visual inspection cannot verify its legality. Because certification isn’t demonstrated, the inspector flags the vehicle as not compliant, and it fails the visual inspection. The other possibilities don’t apply because without that certification, the part cannot be considered allowed or passed during the inspection, and there’s no immediate on-site re-certification that would change the outcome.