The diesel filter connector can be replaced. When the filter is connected to the oil pipe, remove the dust cover of the joint first, and then connect the inlet and outlet oil pipes to the quick connector or oil pipe respectively. When connecting, confirm whether the connector and quick plug are clean, otherwise it will cause air leakage due to poor sealing. Pull the oil pipe and confirm that the oil pipe is firmly connected.
At present, the filter equipped with rod heater is limited by the structure of the heater, and this type of filter can only have one oil inlet and the direction is unique, which can not meet the user's selection requirements for the diversity of filter oil inlet.
In order to meet the different needs of different users or different products for the direction of oil inlet, at least two or three sets of filter base molds should be set for the same filter (some users need to install heaters on the left side of the filter and use the right side as the oil inlet of the filter).
Some users need to install a heater on the right side of the filter, and the left side is used as the oil inlet of the filter; Some users need to use this filter, but they do not need a heater at all, and because of the variety of filter supporting products, the oil inlets on the left and right sides of the filter are required), so the production cost increases significantly.

Function and material structure of diesel filter
The function of the oil filter is to remove harmful impurities and water in the fuel system, protect the normal operation of the engine, reduce wear, avoid blockage, and improve the engine life.
The filter element of the diesel filter is mostly made of filter paper, and some are made of felt or polymer materials. The filter element of the gasoline filter is mostly made of filter paper, nylon cloth and polymer material.
The structure of the diesel filter is roughly the same as that of the oil filter, including replaceable type and spin-on type.