OEM (Original Equipment Manufacturer)
Parts made by the original manufacturer. Often more expensive than aftermarket equivalents.
Why it matters
OEM parts are made by the same supplier that built the part for the original vehicle assembly. Aftermarket parts are made by other manufacturers — often equivalent quality at lower cost. For warranty repairs and lease returns, OEM parts are typically required. For out-of-pocket repairs, aftermarket usually saves 30-60% with comparable quality from reputable brands.