How should I handle “windshield wiper arm, blade, and related components fitment” when shopping for “windshield wiper arm, blade, and related components”?

“windshield wiper arm, blade, and related components” means components installed in place of worn, damaged, recalled, or failed originals. Correct selection depends on exact vehicle configuration and part specification; a visually similar part can still differ in connectors, dimensions, or calibration. Answer with one direct sentence first, then the verification steps.