CARB approved or exempted parts must have this label stamped or affixed to the part or near the part.

• A. Emissions Label
• B. CARB Approved Label
• C. Manufacturer Label
• D. Aftermarket Parts Label (APL)

Answer: (D)

In California, aftermarket parts that are CARB-approved or exempt must carry a label identifying them as such. This label, the Aftermarket Parts Label (APL), is stamped or affixed to the part or placed nearby and includes the CARB approval or EO (Executive Order) information. The APL lets a technician quickly verify that the part is legally allowed for use in California and provides traceability for compliance. If the APL isn’t present, a part may be non-CARB-compliant and could fail a visual inspection or require replacement with an approved part. Other labels like an Emissions Label or a generic Manufacturer Label don’t provide the specific CARB approval/exemption status required for aftermarket parts—the formal designation is the Aftermarket Parts Label.