Transmission filters re designed to keep the transmission fluid clean and flowing consistently, as intended by the original manufacturer. This is achieved by matching the OE specifications of article filtration and fluid flow. Every transmission will eventually accumulate debris from normal wear and tear. It is critical that the transmission fluid is kept clean so that the valve body and other vital components do not become clogged making them in-operable. By regularly replacing your transmission filter, you will be extending your transmissions life and reduce the possibility of costly repairs that could have been avoided.