If the fuel heater top in your '98.5-'99 Dodge Cummins Diesel is leaking and you've searched for a replacement, you've learned that it has been discontinued. Your remaining option is to replace your filter canister or remove the thermostat/wiring harness and seal it off. The fuel heater block off allows you to eliminate the leaky fuel heater from the discontinued fuel filter top on '98.5-'99 Dodge Cummins trucks.
Plug includes (2) viton rubber O-rings and installation instructions.