Fuel Filter su Amazon - Scopri tutte le offerte AdParti, ricambi, accessori, tuning e molto altro ancora. 6.5 diesel fuel heater leaking - YouTube Click to view on Bing0:34I raised the filter housing on my 6.5 as well as replaced the supply and return hoses. I also installed new orings on the fuel heater and WIF sensor.Author: Cummins DriverViews: 5,2K 6.5 td fuel filter housing leaking - TheDieselPage Forums 6.5 td fuel filter housing leaking 6 Turbo Diesel They can leak just about everywhere. Usually the o-ring on the bottom. Some of these are hard to seal.