
The simplest method is to compare the original part from your vehicle with the newly installed part at the 4S store to check for any differences. If the car is still within the warranty period, there's no doubt that the parts used will be identical to the original factory parts. However, in most cases, 4S stores use genuine factory parts, which come with original part codes that you can verify yourself.

I regularly take my car to the 4S shop for maintenance, but I'm always worried about the authenticity of replacement parts because a friend had a bad experience. The easiest way to confirm genuine parts is to check the packaging—it must bear the car manufacturer's logo and a clear part number, which should match the code in my manual. After removing the old part, compare it with the new one; genuine parts fit seamlessly with no gaps and have smooth surfaces without burrs. Last time when replacing the cabin air filter, I watched the technician unbox and install it the whole time, and even scanned the anti-counterfeit label to verify authenticity. The repair order must clearly state the source as genuine OEM parts, or I refuse to sign. Although 4S shops have good reputations, I've heard of workers swapping parts, so I take photos to document the entire process beforehand. Staying vigilant like this ensures safety and saves money, as genuine parts last much longer—non-OEM parts often fail within months, affecting driving stability.

As a seasoned driver, I've studied parts identification for years. To ensure genuine parts at 4S shops, focus on three key points: Part number – printed on new parts or packaging, matching your vehicle manual; Material & craftsmanship – genuine parts feel refined and flawless, while fakes appear rough. I always supervise unboxing to prevent label swapping. Service advisors should provide purchase certificates to guarantee legitimate sourcing. Experience tells me genuine parts fit seamlessly without strange noises after installation. I also recommend keeping warranty cards and recording batch numbers for traceability. This approach prevents future issues, like non-genuine tire bolts being prone to stripping or loosening. Remember these details, and your car will run longer with peace of mind.

When replacing parts, I may not understand professional terms, but it's important to clarify the details. For example, ask the 4S store staff to show that the new part's packaging seal is intact, with logos and numbers, and compare it with the original car part's appearance. Observe the installation process on-site—genuine parts usually fit smoothly without wobbling. Keep the invoice and specify the type of part to avoid being misled. Bring a car-savvy friend to compare the weight difference between old and new parts—genuine ones tend to be heavier. These simple steps ensure value for money and reduce the chance of repeat repairs.


