This 12V DC fuel dosing pump is a direct replacement part for most 2KW, 5KW, and 8KW diesel air heaters, so a worn pump doesn't mean replacing the whole heating system. Pulse-driven precision delivers 22 milliliters of fuel every 1000 strokes, keeping fuel flow steady and helping the heater run consistently across different conditions. An advanced noise-reduction structure keeps operating sound down compared to standard pumps, which matters if the heater runs overnight in a cab, camper, or cargo area. Installation is straightforward: confirm your heater model, tighten the mounting clamp, and make sure the fuel line connections are secure before powering on. Built with a durable steel housing, the pump measures a compact 4.92 x 1.34 x 1.42 inches and weighs just 0.37 pounds, fitting into tight engine bays or storage compartments without needing extra space.