There are great opportunities for automakers and their dealers in the aftermarket for automotive mechanical parts. The total size of the market in the U.S. is $26 billion, and it is expected to increase 1.8 percent annually to $28 billion in 2025. But original equipment parts have only a 36 percent market share. In February, Carlisle & Co., along with automotive data supplier Motor, surveyed independent repair facilities, or IRFs, across the U.S. to better understand their decision-making when buying original equipment parts. (Read a white paper on the survey at autonews.com/genuineparts.)