The material and design of oil filter cartridges vary, but most of them use a multi-layer filter paper or metal mesh structure to improve filtration efficiency and durability. These filters are typically designed as replaceable components so that they can be easily replaced during oil change cycles, thereby maintaining the cleanliness and efficient operation of the engine interior.

Regularly replacing the oil filter can prevent engine failures caused by oil pollution, such as clogged oil passages and worn bearings, thereby reducing maintenance costs and ensuring driving safety. Different car models and engines may have different requirements for oil filters, so car owners should refer to the vehicle manual or consult professional maintenance personnel when choosing oil filters to ensure that they are compatible with the original vehicle.