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generator fuel filter

If you need help finding a reliable fuel filter supplier, we can help! With more than 10 years of experience in this industry, we are experts in the manufacture of generator accessories in China.

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generator fuel filter manufacturer from china

Fuel filters from China BISON can safeguard the diesel generator’s fuel delivery system from dust and other particulates that could clog it. This situation could detrimentally affect the engine’s performance.

BISON fuel filter has:

Whether you’re looking for fuel filter/generator parts and accessories or components for a complete engine rebuild, we have the parts you need. Our full range of original parts is always available for fast and timely delivery. So if you need to buy generator parts, you can rely on BISON!

What is a generator fuel filter?

Diesel generator’s fuel filters, a simple device installed in a fuel system, are designed to extract impurities from the fuel. It eliminates moisture and dust found in the fuel to prevent the diesel engine’s components, such as the injection pump and nozzle, from blockage and wear. The generator fuel filter, which can be constructed from either plastic or metal, houses a filtration element. Fuel from the tank enters the filter, gets purified, and then can be utilized by the engine. Early models of generator fuel filters resembled small plastic cans and were meant for smaller, less powerful engines. However, with the advent of modern fuel injector engines, there emerged a need for a  fuel filter industrial generator capable of enduring the high-pressure conditions within the fuel system.

two bison diesel generator fuel filters

Functions and uses of generator fuel filter

The fundamental role of a generator fuel filter is to serve as a shield separating the fuel and the generator’s engine. The fuel, when introduced into the generator, initially flows through the fuel filter prior to making contact with the engine. The filter traps and holds any impurities within the fuel, preventing them from causing harm to the engine.

In everyday settings, diesel engine fuel filters are crucial for the smooth operation of any generator. They are especially critical in environments where the quality of fuel may be questionable, such as in remote locations or in situations where the fuel has been stored for a long time.

Importance of Maintenance Generator Fuel Filters

Maintaining  fuel filter is as essential as changing the oil in your generator. For example, if a generator is used frequently for power supply during recurrent power outages, the fuel filter should be checked regularly and replaced as necessary.

If a generator starts having issues like difficulty in starting, losing power, or even shutting down unexpectedly, one of the first things to check should be the fuel filter. A clogged or dirty fuel filter can restrict fuel flow to the engine, leading to these problems.

generator fuel filters manufactured by bison

generator fuel filter procure Guide

An often overlooked component in a diesel generator is the unassuming fuel filter. Yet, this small part plays a significant role in keeping your generator running smoothly and efficiently. It’s the unsung hero that ensures your power source remains reliable, especially in times of need.

Fuel filters are the gatekeepers of your generator’s health, sifting out impurities and contaminants from the fuel before it reaches the engine. Without a high-quality fuel filter, these unwanted particles could lead to substantial damage to your generator’s internal components, causing performance issues, costly repairs, or even complete failure.

China BISON’s thorough guide is designed to provide you with a firm grasp of filter types and the knowledge of when to replace them. This will empower you to make decisions backed by knowledge. So, no matter if you’re a seasoned generator user or a beginner, continue reading to find out how choosing right fuel filter can boost your generator’s performance and extend its life.

What Are The Different Types Of generator Fuel Filters?

bison generator fuel filter in hand

How important is a fuel filter to my generator?

The diesel generator fuel filter is responsible for extracting dust and moisture from the fuel, thereby safeguarding the engine’s injection pump and nozzle against damage and blockage.

This compact gadget aids your BISON generator engine in performing at its peak and prolonging its lifespan. Serving as a shield for the engine, a fuel filter eliminates impurities.

How foreign matter in fuel can affect your engine:

Causes Effects Engine Condition
Dust Wearing and clogging of injection pump and nozzle Loss of output
Moisture Rust Bad fuel economy
Moisture freezes

When Is It Time to Replace a Fuel Filter?

A malfunctioning diesel generator fuel filter necessitates replacement. Some individuals may attempt to repair a broken filter by cleaning it, but this might not be the best approach. Furthermore, most fuel filters are reasonably priced and have a long lifespan, As a result, there is excessive financial pressure to change fuel filter.

What are the different types of generator fuel filters?

ODM Fuel filters manufacturer comes in two varieties. While their size and shape may differ based on the specific make and model of your portable generator, they all serve the same fundamental purpose – to stop dust and other contaminants from infiltrating and blocking the generator’s fuel system. Such a scenario can hinder the engine’s functionality.

1)Depending on their attachment method during replacement, fuel filters come in two varieties: spin-on filters and cartridge filters.

Spin-on Filters

The filter medium is housed in a metal case that has threads at the bottom. This type provides superior ease of use as the entire case can be swapped out.

Cartridge Filters

Replacing only the filter medium minimizes the volume of waste material generated per replacement.

spin-on filters
cartridge filters

2)Depending on the configuration of the fuel circuit, a primary filter and a pre-filter are utilized.

main filter negative pressure

The main filter primarily handles the task of trapping fine pollutants. Negative pressure types make use of the suction pressure generated by the feed pump and are located nearer to the fuel tank than the feed pump itself.

main filter positive pressure

Positive pressure filters make use of the upward force exerted by the feed pump and are situated nearer to the engine than the feed pump. Certain generator might be fitted with both negative and positive pressure main filters.


The pre-filter is designed to eliminate larger contaminants and moisture present in the fuel. These filters are positioned near the fuel tank within the circuit.

bison fuel filter laying flat

Factors to consider when purchase generator fuel filters

Generator fuel filter size

The size of fuel filter you choose should be compatible with your generator model. A filter that is too small may not handle the fuel flow volume, leading to performance issues. Conversely, a filter that is too big may not fit properly, leading to leaks or ineffective filtration.

Pros: Choosing the right size ensures optimal filtration and generator performance.

Cons: Incorrect size selection can lead to poor performance or damage.

micron rating of fuel filter

The micron rating of a fuel filter refers to the size of the particles that the filter can effectively remove. The lower the micron rating, the smaller the particles it can filter out.

Pros: A lower micron rating means better filtration, protecting the engine from tiny contaminants.

Cons: Filters with extremely low micron ratings may restrict fuel flow, affecting performance.

Types of Fuel filters

Primarily, filters can be categorized into two types: spin-on and in-line. Spin-on filters, which are self-sufficient units, are simple to replace, in contrast to in-line filters that require disassembly for replacement.

Advantages: The maintenance and replacement process for spin-on filters is simpler compared to in-line filters, though the latter are typically more cost-effective.

Cons: In-line filters require more effort to replace, and spin-on filters may be more expensive.

Selecting a fuel filter for specific environments

The environment in which your generator operates can influence the type of fuel filter you need. For instance, if your generator is used in a dusty environment, consider a filter with a lower micron rating for better protection against fine dust particles.

By considering all these factors, you can ensure you choose the best fuel filter for your generator, enhancing its performance and lifespan.


To recap, the primary benefits of the generator fuel filter are:

  • Enhanced Efficiency
  • Extended Lifespan of Generator
  • Reduced Emissions

China BISON emphatically endorses the application of authentic parts for your generator.

Employing authentic parts not only minimizes potential hazards but also extends the lifespan of the generator. BISON provides genuine parts that are supplied and tested by the generator parts manufacturers themselves.

Generators purchased from BISON generator suppliers come with a comprehensive service and maintenance package. This kit serves as a reminder to the user to substitute specific parts once the diesel engine has clocked a certain number of operational hours.

generator fuel filter FAQ lists

If your generator is infrequently used, it is recommended to change the oil and filter every two years (during spring and fall). Additionally, fuel filters should be serviced or replaced annually.

Blocked generator fuel filters can lead to engine harm, hinder smooth acceleration, and lessen fuel economy. Regular maintenance of your fuel filter not only helps maintain your fuel expenses at a minimum but also spares you the inconvenience and expenditure associated with future engine damages.

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