Which agency's approval should be checked for aftermarket headers during inspection?

• A. EPA certification of the headers.
• B. CARB EO number for the headers.
• C. State safety inspection tag.
• D. No verification is required.

Answer: (B)

The key idea is that California requires emissions-related aftermarket parts to have CARB approval. For aftermarket headers, that approval is shown by a CARB EO number, which confirms the part has been evaluated and authorized for use in California. Relying on EPA certification alone isn’t enough in CA, because CARB’s requirements are stricter for state compliance. A state safety inspection tag isn’t about emissions compliance and doesn’t verify that the headers won’t affect emissions. No verification isn’t correct here, since the inspection should confirm CARB-approved parts.