Combination cooler/filters use “heat sink design” to dissipate the excessive heat build up in racing transmissions Can be used on the street as an auxiliary cooler in conjunction with a stock cooler Made of aluminum with 500 sq. inches of radiation surface for high heat transfer Filter with magnet removes all wear particles over 5 microns in size Dimensions: 3" diameter, 12" length, and weighs only 1 lb. Very easy to install Comes complete with filter cartridge, includes two 1/4" NPT to 3/8" line fittings and all necessary installation instructions