When a garage replaces a failed catalytic converter, how long must they retain the old converter?

When a garage replaces a failed catalytic converter, the law requires that they retain the old converter for a specific period, which is typically 15 days. This retention period is important for regulatory and environmental compliance purposes. The catalytic converter is an essential component of a vehicle's exhaust system, responsible for reducing harmful emissions. Maintaining the old unit allows for compliance with state and federal regulations concerning emissions control.

Additionally, the retained catalytic converter may be subject to examination if it is needed to verify its condition or the failure that led to its replacement, particularly in cases where warranties or claims for emissions failures are involved. Thus, 15 days is the established timeframe that ensures proper documentation and adherence to legal requirements in automotive service and repairs.