Each car is made up of approximately 30,000 parts that need to work together for the car to operate properly, safely and economically. If any part is worn, faulty or damaged, it may cause the car to not work properly. However, there are many auto parts and their sources come from various sources, which makes it difficult for many consumers to distinguish their authenticity and quality when purchasing, and they are often easily deceived. In order to help everyone better understand and choose auto parts, this article will share some knowledge about the classification of auto parts, hoping to provide you with some reference.

Classification by function

1. Parts: single finished products and single parts made without assembly processes. The basic manufacturing unit of a car is a non-removable whole. Such as: piston rings, pistons, valves, etc.

2. Combined part: It is composed of two or more parts and has the function of a single part. The name is determined by its main parts. For example, connecting rods with covers, paired bearings and cylinder heads with valve guides, etc.

3. Assembly: It is assembled from several parts or components, but cannot independently complete the task of a specific mechanism. It needs to cooperate with other parts to perform its function. Such as: transmission cover, etc.

Classification according to nature of use

1. Consumable parts: due to natural aging and failure, must be replaced regularly, such as various belts, hoses, seals, etc.

2. Consumable parts: failure due to wear and tear, such as bearings, pistons, cylinder liners, valves, brake drums, clutch friction plates, etc.

3. Maintenance parts: parts that must be replaced after a certain operating cycle of the car, such as various shafts, gear parts, etc.

4. Basic parts: refers to some assembly parts that make up the car. In principle, they should be full-life parts, but they may be damaged in advance due to the special use environment and need to be replaced or repaired, such as crankshafts, cylinder blocks, and axle housings. , transmission housing, etc.

5. Accident: parts damaged due to accident.

Classification according to usage principles

1. Consumable parts: Parts that have relative movement speed, load-bearing capacity, high working environment temperature, and are often prone to wear or breakage and failure are consumable parts.

2. Automotive standard parts: parts designed and manufactured according to national standards. The shape, size, tolerance, and technical requirements of the same part are unified. It can be used in various instruments and equipment and is interchangeable.

3. Body coverings: In order to protect the passengers and important components from interference from the external environment, they are components or panels on the surface of the car that have certain aerodynamic characteristics.

4. Security parts: Parts that are not easily damaged are called security parts. Such as crankshaft starting claw, torsion damper, camshaft, steering knuckle, etc.

According to the definition of accessories quality

The routine of replacing car parts is a bit confusing. Before replacing parts, everyone needs to understand one question: what do original parts, genuine parts, sub-factory parts, and dismantled parts mean?

1. Original parts: Original parts are genuine accessories produced by the automobile manufacturer, that is, the original equipment manufacturer.

OEMs have mastered the technology of core components such as engines, gearboxes, chassis, etc., but a car has thousands of parts, and OEMs cannot build a separate factory to produce all non-core components. Therefore, most non-core technical components such as lamps, plastic decorative parts, body panels, seats, door glass, etc. on cars are produced by external suppliers and then sent to the OEM for inspection. Qualified parts will be Warehousing. Original parts are produced in accordance with the standards of the OEM. After strict quality inspection, they are fine in workmanship, similar in quality to the original parts, have no defects, have the same appearance and performance as the original parts, have professional certificates of qualification, and are printed with the manufacturer's logo. and part numbers, are the purest accessories. These accessories are mainly supplied to regular 4S stores. They are accessories specially provided by automobile manufacturers for after-sales service. They have the best adaptability, but the price is relatively high.

2. Genuine parts: Genuine parts are produced by suppliers, and the quality is also guaranteed.

Usually, a large number of automobile parts are not produced by the manufacturer itself, but are produced by some experienced suppliers, such as Bosch, MAN, etc. While these suppliers produce accessories for automobile manufacturers, they are also allowed to produce accessories with the same specifications and standards for self-sale, but without the automobile manufacturer's logo on the goods. The advantage of genuine parts is that the quality is close to the original parts, but the adaptability of some accessories may not be as good as the original parts, and the price will be slightly cheaper than the original parts.

3. Branded parts: Purchase through a professional auto parts manufacturer, but the manufacturer has not yet obtained the supporting license from the manufacturer. These accessories have their own brands and their quality is guaranteed. In the domestic market, relatively well-known brands include Shandong Jinqi's brakes. In the repair market, these accessories are widely used.

4. Market-applicable accessories (A goods): These accessories usually have the original brand and packaging, and the quality is guaranteed to a certain extent. In addition to the big difference in price from the original and genuine manufacturers, the quality and appearance are difficult to distinguish. The main ones are appearance accident parts, which are the main types circulating in the market.

5. Dismantled car parts: The source of dismantled car parts cannot be guaranteed.

Some dismantled car parts come from newer accident cars or cars with replacement parts, which are basically equivalent to second-hand original parts. Such parts are cheaper and more cost-effective; while other dismantled car parts may come from scrapped cars or accident cars. Damaged parts are reused after secondary renovation. The quality of such accessories is difficult to guarantee. As a reminder, unless you drive an old or unpopular car and it is difficult to find parts, or you are very familiar with car parts, it is recommended that you avoid using dismantled car parts.

6. Refurbished accessories: A small part of the original accessories and original factory accessories have been lost and will not affect normal use after repair. They are generally more expensive accessories from the original factory.

7. Sub-factory accessories (imitation products): To put it simply, they are imitation products.

They come from many sources: the first is parts produced by small and medium-sized suppliers that have production qualifications but are similar to original parts in terms of materials and workmanship, but have failed to obtain procurement qualifications from automobile manufacturers for various reasons; The second is to directly imitate the original parts produced according to the specifications of certain vehicle models. Although the materials and processes may be different, they have their own brand packaging; the third is to directly counterfeit original parts or High imitations of genuine parts. The price of accessory parts is indeed cheaper than original parts, but they are limited by technical costs. The quality of sub-factory parts varies. If you replace key components, it is recommended to use original parts for insurance purposes.

According to the types of international auto parts

1. OEM parts for automobile factory assembly: They are produced according to the production drawings provided by the automobile factory. The finished products are sent to the automobile factory on time by various professional factories every day for automobile assembly.

2. Genuine parts: These are the parts provided by the automobile factory to users for vehicle maintenance, but they are not necessarily produced by the automobile factory itself. Genuine parts are of reliable quality, but the price is higher.

3. Replacement: Replacement parts are also called factory-replacement parts. They are spare parts produced by professional parts manufacturers. They are packaged in their own packaging boxes and do not go through the channels of the automobile factory. Instead, they are produced by themselves. sales channels.

   When choosing car accessories, we need to decide which accessories to buy based on our own needs and budget. Original parts and genuine parts are of better quality, but the price is relatively high; used car parts are more cost-effective, but the quality is uneven; auxiliary parts are low-priced, but there are differences in quality. No matter which accessory we choose, we need to ensure the safety and applicability of the accessory, avoid losing the big for the small, and ensure driving safety. At the same time, when purchasing accessories, you should also pay attention to choosing formal channels to avoid buying fake and shoddy products. Hopefully this information will help you make informed choices when purchasing auto accessories.