They have high efficiency and a diesel pump is the most common type in the market. The diesel pump is a commoner type of diesel pump, for example, is not suitable for high-pressure fuel. A diesel pump is a commoner type of pump and is also less common to them.
The price of a 4D diesel pump usually depends on the size and the type of pump. For instance, the price of a 4DW diesel pump depends on the size and the type of pump. The efficiency of a 4DW diesel pump varies depending on the size and the features of the pump.