What are the reasons why the five major assemblies cannot be sold?

[OliviaLynn]

Selling or buying the five major assemblies of used cars is illegal. According to the national "Regulations on the Recycling of Scrapped Automobiles", the engine assembly, steering gear assembly, transmission assembly, front and rear axles, and frame removed from scrapped vehicles cannot be bought or sold. In addition to the five major assemblies, purchased used parts should be carefully inspected by the installer. If the used parts have minor damage, deformation, or are not as good as the original parts, it is best to return or replace them immediately. The functions of the five major automobile assemblies: Engine: Converts petroleum fuels such as gasoline or diesel into rotational torque. Transmission: Uses neutral gear to interrupt power transmission, allowing the engine to start, idle, and facilitating gear shifting or power output. Front axle: Transmits the engine power, after being reduced in speed and increased in torque by the clutch and transmission, to the final power output—the wheels—through the front drive axle assembly. Rear axle: The rear axle is merely a follower axle, serving only a load-bearing function. Frame: The frame should be arranged close to the ground to lower the vehicle's center of gravity, thereby improving driving stability.

[CharlesDella]

The five major assemblies refer to the key components of a car, such as the engine, transmission, and chassis—these core parts. I think they shouldn’t be sold mainly because the safety risks are too high. If these parts are salvaged from scrapped cars, refurbished, and then installed in used vehicles, it’s like wearing a torn piece of clothing while thinking it’s new. One day, the engine might suddenly stall or the steering could fail, directly causing an accident. I’ve seen reports about used cars with refurbished engines catching fire or crashing on the road, endangering both the driver and others. That’s why the government has set rules requiring scrapped cars to be recycled as a whole, prohibiting the separate sale of the five major assemblies to protect everyone’s safety. This also helps reduce black-market trading and makes the automotive industry more standardized. As car owners, if we encounter similar issues, we must go to authorized shops for repairs—don’t cut corners by buying risky parts that could affect insurance or driving safety. In short, it’s like healthy eating: go for what’s fresh and reliable. Don’t risk your safety just to save a few bucks.

[LaSilas]

From a legal perspective, there are explicit regulations prohibiting the sale of the five major assemblies. For instance, national scrapped motor vehicle regulations ban the circulation of these components. If engines or transmissions dismantled from scrapped vehicles are sold, it constitutes a violation and may result in heavy penalties or legal accountability. Why such strict measures? This prevents illegal refurbishment and reduces safety hazards. If these core components were freely traded, the market would be flooded with counterfeit and substandard auto parts, posing high risks to customers during repairs and complicating insurance claims. An industry insider once mentioned that before these policies were implemented, there were cases where refurbished accident vehicles were modified and sold in rural areas, causing multiple casualties. Hence, current scrapping procedures mandate crushing or formal recycling to ensure these parts don’t re-enter the market. In the long run, these regulations protect consumer rights from fraud and benefit overall traffic safety. As citizens, we should simply comply with the rules rather than seek loopholes.

[SkylarRose]

From an economic perspective, it's quite reasonable that the five major assemblies cannot be sold, otherwise the market would be in chaos. If engines and transmissions from scrapped vehicles were freely sold, refurbished parts would flood the market, driving down prices of genuine parts and leading to quality deterioration. Imagine small workshops competing for business: stores that originally sold new components would have to lower prices to compete, ultimately harming consumers who might spend money on repairs only to break down midway. Worse still, new car sales would suffer—who would buy brand new if refurbished is cheaper? The entire automotive industry chain would be damaged, affecting employment. This also involves cost waste: these components can be recycled into steel for environmental reuse through proper channels. I've previously dealt with auto recycling cases where illegal trading led to excessive part stockpiling and price wars. Therefore, banning the sale of the five major assemblies helps stabilize the market and encourages people to use trustworthy channels, saving money and ensuring peace of mind. Simply put, don't lose the greater for the lesser—what should be scrapped must be scrapped.

[DanteRose]

From an environmental perspective, banning the sale of five major assemblies brings numerous benefits, as recycling them can reduce resource waste and environmental burdens. Heavy metal components like engines and frames, if refurbished and sold, may contaminate land and water sources, whereas proper recycling allows them to be melted down into recycled materials for new vehicle production, saving mining and deforestation. If sold indiscriminately, illegal refurbishing generates more waste debris, leading to landfill pollution and air contamination. I once participated in a volunteer activity observing the dismantling process at a recycling station, where proper treatment can reduce carbon footprints and protect green mountains and clear waters. The legal ban aims to promote a circular economy, extending material lifespans rather than seeking short-term profits. This affects everyone’s daily environment: cleaner air and reduced smog. So, when scrapping vehicles, don’t consider selling these parts—opt for full recycling instead. It’s smarter and friendlier for both the planet and our health.

[McEzra]

I once heard a friend complain about buying a used truck that soon had engine failure, which turned out to be caused by illegally refurbished major assembly parts. Now I understand why selling these scrapped vehicle components is prohibited—it's entirely for safety reasons. Dismantling and reselling them is like dressing a wolf in sheep's clothing; the exterior may look fine, but the interior could fail at any moment, causing accidents that endanger both the driver and pedestrians. In fact, the legal ban is a good thing—it helps eliminate black market dealings and prevents more road hazards. When repairing your vehicle, also be cautious not to use parts of unknown origin to ensure smooth and safe driving. These small regulations protect everyone's interests and save money in the long run.