What is the difference between OEM and genuine parts?

[McJulia]

Here are the differences between OEM and genuine parts: 1. OEM parts: So-called OEM parts are not necessarily produced by the automobile manufacturer, but refer to parts produced by designated component manufacturers (also called supporting factories) specified by the automobile manufacturer (also known as the OEM). 2. Genuine parts: Genuine parts are generally sourced from brand foundries that produce them according to the vehicle model specifications and requirements set by the automaker. Their quality is the same as the original car parts because automakers enforce strict production standards. Typically, these parts are only supplied to 4S stores, hence they are also called 4S parts. However, automakers have annual sales targets for auto parts distribution. If 4S stores fail to meet these targets, many genuine parts will flow into the regular auto parts market each year.

[McChristian]

The difference between OEM and OEM-matched parts lies in their source. Simply put, OEM parts are purchased directly from the automaker, bearing the car manufacturer's logo, with better warranty coverage but at a higher price. As someone who frequently DIYs car repairs, I experienced this when replacing spark plugs: the OEM part was sourced from a 4S dealership, came in premium packaging with a one-year warranty; the OEM-matched version I bought from a reputable auto parts store was from the same supplier but unbranded, 20% cheaper, and performed identically—just without that peace of mind. The key is supplier credibility—reputable brands like Bosch or Delphi supply reliable matched parts. However, for safety-critical components like braking systems, I’d still recommend OEM to avoid risks. For minor repairs, matched parts save significant money and are highly practical.

[DiCamilla]

As a car owner for many years, I'm quite familiar with this issue. Genuine parts are provided directly by the automaker with better warranty coverage, while OEM parts are the same components supplied to manufacturers without branding, usually more affordable. I once replaced an air filter myself - the OEM part cost me 100 yuan compared to 150 yuan for the genuine one, with no difference in performance. However, OEM parts sometimes have mixed supply sources, so it's important to purchase from reliable channels like major chain stores or official websites. When choosing, prioritize genuine parts for critical components like engine-related parts, while using OEM alternatives for small items like bulbs or wiper blades is perfectly fine - it saves money without affecting daily use. Always check compatibility and avoid counterfeit products to prevent damage to your vehicle.

[ValentinaDella]

Seen a lot in this business. OEM parts are just rebranded by the car manufacturers, while aftermarket parts are the same products directly from suppliers – essentially identical stuff in different packaging. When repairing cars, I often recommend: aftermarket parts are cheaper and just as durable, but OEM parts come with a warranty for peace of mind. For oil filters, either works fine – the key is checking brand certifications. Don't cheap out on poor-quality ones. Safety first.