This FEBI BILSTEIN hydraulic filter kit, part number 171138, is designed to maintain the cleanliness and efficiency of your automatic transmission's hydraulic system. Proper filtration is crucial for the longevity of automatic transmissions. This kit includes all necessary components to replace the existing filter, helping to remove contaminants and debris that can accumulate in the transmission fluid. By ensuring clean hydraulic fluid, this kit contributes to smoother gear changes, prevents premature wear on transmission components, and helps maintain optimal operating temperatures. Regular replacement of the transmission filter is a key part of preventative maintenance for automatic gearboxes. FEBI BILSTEIN is known for its commitment to quality and precision engineering. This kit is manufactured to meet stringent standards, providing a reliable solution for your transmission service needs.