The Standard Ignition DFH104 Fuel Injection Fuel Heater is engineered to enhance the performance and reliability of diesel engines by preheating the fuel before it enters the injection system. This process improves fuel atomization, leading to more efficient combustion and optimal engine performance, particularly in colder climates where fuel viscosity increases. Designed as a direct replacement for original equipment, the DFH104 ensures a precise fit and seamless integration into various Ford models, including the E-350 Econoline, E-350 Econoline Club Wagon, F-250, F-250 HD, and F-350, all equipped with 7.3L V8 diesel engines from 1994 to 1997. Constructed with high-quality materials, the DFH104 features a steel housing with a zinc coating to prevent corrosion, ensuring durability and longevity. The terminals are made from high-conductivity aluminum, and the O-rings are crafted from Viton® material, providing superior sealing and resistance under extreme operating conditions. The heater element utilizes a high-conductivity metal to deliver optimal performance during peak operation. By maintaining consistent fuel temperature, the DFH104 minimizes the risk of fuel-related issues such as clogging and poor combustion, thereby reducing maintenance costs and downtime. Its robust construction and reliable performance make it a valuable component for fleet operations, ensuring vehicles remain operational and efficient throughout the year.