Which statement about after-market parts is true?

After-market parts are produced by manufacturers other than the original equipment manufacturer (OEM). This distinction is important in the automotive and machinery industries, where after-market parts serve as alternatives to OEM parts. These parts are designed to fit and function similarly to the original ones but are not made by the original manufacturer.

Understanding after-market parts helps in recognizing their potential benefits, such as often lower costs and greater availability compared to OEM parts. However, it's also essential to evaluate their quality and compatibility, as these can vary widely among different after-market manufacturers. After-market parts can provide viable options for consumers, depending on their needs and budget, which is why this statement accurately describes their defining characteristic.