Genuine Parts: These come directly in the vehicle manufacturer's branded packaging (e.g., a Porsche or Ferrari box). They are the exact components installed on the vehicle at the factory.
OEM (Original Equipment Manufacturer) Parts: Produced by the same tier-one manufacturers that supply the car brands (such as Bosch, Brembo, or Lemförder) but distributed in the supplier's own packaging. They offer the exact same quality as Genuine parts but at a more competitive price point.
Aftermarket Parts: Components produced by independent third-party manufacturers. These are designed to meet or exceed original factory specifications, often providing a budget-friendly or performance-upgraded alternative.