Sinister Diesel Coolant Filtration System/Filter Kit 6.0L Application 2003-2007 Ford 6.0L Powerstroke Diesel F250 F350 F450 F550 This Sinister coolant filtration system for the Ford Powerstroke filters a small amount of coolant with each pass. The spin on the filter makes it easy to change coolant as often as you need. Plus, the filters also remove all solid particles. Typically you will use three filters in the first nine months. Once the initial nine months has passed, you will only need to change the filter once a year. Includes: 1 Coolant Filter Ball Valves Coolant Filter Assembly Coolant Hoses All Hose Clamps & Hardware for Installation Installation Instructions