SMOTA Filters are made of light yet durable rubber compound and with better filteration surface for the same application.

SIMOTA nonwoven fabric (epoxy resin) stock replacement air filter can greatly increase air intake volume and the air intake efficiency of engines. It is designed for use under both non pre-oiled and pre-oiled conditions, and is more dust-absorptive than original air filter models. It ensures extended engine operation life and even smoother air intake, and increases horsepower at least by 5%.

12mm-16mm rubber infringement of Manufacturer E significantly reduces the filtration area. Besides, the filter is obviously over-weight that adds excessive load to the car.

The exposed aluminum net significantly shows its poor quality. Manufacture K's filter frame has fragile rubber structure.

Poor rubber structure of Manufacturer K can be easily melts under engine heat which cause distortion, therefore suffers from air leakage and resulted in inferior filtration.