Consumers concerned about whether certified auto parts have been used to repair their cars can now go online and check, thanks to an interactive program created by the Certified Automotive Parts Association (CAPA).

Auto parts that are CAPA certified have a removable seal with a number identifying the part. When a body shop makes a repair, it can remove the seal and record the number. In addition, the body shop can check to be sure the part is certified for use.

A consumer can ask the body shop for the list of numbers of the parts used, then go to the CAPA Web site and enter those numbers to check for certification.

Because CAPA is constantly testing new aftermarket parts, the organization has no way of knowing what percentage of the market they have certified, but its goal is a standardized certification process. According to CAPA, both consumers and repair shops will benefit from using certified parts. The cost of repairs has increased dramatically, especially in cases where car insurance companies are required to use only original equipment manufacturer (OEM) parts for repairs.

"It has meant many insurance companies are choosing to 'total' a car rather than have it repaired," says CAPA spokesperson Jack Gillis.

CAPA certifies parts that are designed to effectively replace OEM parts at a lower cost.