As more motorists take a hands-on approach to vehicle upkeep, understanding the difference between original, OEM, and replacement parts has become essential. Knowing which components to check, replace, or maintain can make a significant difference in a vehicle’s safety, performance, and longevity. To help drivers make more informed decisions, AISIN, a global original equipment manufacturer (OEM) that supplies parts to many of the world’s leading automotive brands, shares practical insights on commonly overlooked but critical vehicle components.