The Difference Between Genuine and OEM Parts

2 Answers
RemingtonLynn
07/29/25 4:48pm
There is a certain quality gap between aftermarket parts and OEM parts, with the differences outlined below: Reasons for the Gap: OEM parts are generally produced by smaller factories and cannot compare in quality to genuine parts. Genuine parts are manufactured by authorized suppliers and can achieve a perfect fit when installed on vehicles, whereas aftermarket parts cannot. Reasons to Choose Genuine Parts: First, in terms of quality, genuine parts are superior and easier to install, with minimal issues of misalignment or incompatibility. If aftermarket parts are used, installation may take longer due to non-standard specifications, which can affect the fitting process.
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HeidiLee
08/14/25 6:29am
The difference between genuine and OEM parts is quite distinct. Genuine parts come directly from the car brand manufacturer, like those you get at a 4S shop for replacements - they're identical in quality to the original factory components, more expensive but reliable with no compatibility issues. OEM parts, however, are often made by the same supplier factories but without the brand logo, such as brake pads or filters, which may perform similarly but cost significantly less. I remember replacing a battery with an OEM part once, saved a few hundred bucks and it lasted two to three years before needing replacement - quite cost-effective. But during the new car warranty period, avoid randomly switching to non-genuine parts as it may affect insurance. Generally, opt for genuine if budget allows; choosing OEM when funds are tight is also a sensible choice.
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