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Pre Filters

Pre-Filters - Fuel Filter Water Separators

Removing Water and Contaminates

For off road or vehicles working in high dust areas. Where contaminated fuel can be an ongoing problem, installing a proper fuel filtration system using a Pre Filter / Fuel Filter Water Separator, contaminated fuel may be a thing of the past. Western Filters has a great range of Fuel Filter Water Separators from reputable manufacturers such as; Parker-Racor, Fuel Manager, Mann+Hummel PreLine, Donaldson, Hifi-Filters, Dahl-Baldwin and Mr. Funnel. These companies are industry leaders who specialise in developing cutting edge filtration systems and have been manufacturing Fuel Water Filter Separators for years. Contaminates may become a problem with older machinery, (rust and debris) and when transferring fuel between storage tanks. For better performance, maintain your equipment and install a separator, and you'll be more than likely avoid major bloackage problems that can hinder engine performance and cause excessive wear on machine parts. We have a range of kits aswell as individual units, for all conditions including marine.

Fleetguard Fuel Filter Water Separators

Fleetguard Fuel Filter Water Separators

If you’re running a diesel engine, it’s essential to have clean fuel. And that’s exactly what Fleetguard Fuel Water Separators are built for.

These filters help stop water and fine particles before they can cause problems inside your fuel system. It’s for every work ute, 4WD, or light truck; it’s a must-have investment if you are travelling regularly.

Diesel can easily pick up contaminants. As an off-roader, you may have to use portable tanks or on-site browsers for refuelling. Even in a humid climate, you will need a fuel water separator.

Fleetguard separators tackle that issue head-on by filtering both debris and water before the fuel reaches your engine. Some models include a clear bowl and drain point, so it’s easy to check and remove water when needed. No guesswork. No surprises.

If you’re serious about protecting your engine, this is the kind of upgrade that pays off. Less downtime. Lower repair costs. And more confidence that your vehicle will do its job, day in and day out.

Add a Fleetguard Pre-Filter for Extra Protection

A Fleetguard pre-filter gives your system an added layer of defence. It captures any large or small particles before they reach the main fuel filter. This helps reduce filter blockages, improves fuel flow, and extends the life of your injectors and pump. For anyone driving in dusty or off-road conditions, a pre-filter becomes necessary.

The benefit here is simple. Your engine gets cleaner fuel. Your primary filter lasts longer. And you reduce the risk of sudden issues that can slow you down or put your vehicle in the shop.

Looking to upgrade or replace your current fuel filters and make your engine safe? We stock a full range of Fleetguard pre-filters and Fleetguard Fuel Water Separators to suit different makes and models, including Volvo, Hitachi, Caterpillar, and Weichai Yuchai Eng. Machinery.

This is one of those upgrades that pays for itself over time, especially if you rely on your diesel vehicle to perform without interruption.

When it comes to choosing Fleetguard pre-filters, Western Filters is your best option to buy. Established in 1981 with over 30 years of experience, we proudly supply top-tier automotive and industrial filters, including air, oil, and fuel, across Australia. We are among the country’s biggest carriers of Fleetguard and other leading brands. With same‑day delivery options, expert filter‑cleaning services, and a knowledgeable team that understands diesel systems inside and out, Western Filters delivers genuine products fast and with real support when you need them most.

Fleetguard Fuel Filter Water Separators
PF Dual Bracket Kits
Automotive Filters - Western Filters Pre-Filter Kits - Donaldson Mann Fuel Manager Parker
PF Dual Bracket Kits
Fuel Manager Pre Filters

Diesel Fuel Filters / Pre-Filter / Water Separators: Fuel Manager is a unique, patented, modular diesel fuel filter/water separator system that can be customized for virtually any application. Designed for use in truck, automotive, heavy equipment, marine, industrial and agricultural diesels. The completely modular system has interchangeable components that can be added or removed easily and independently.

All Fuel Manager units remove both particulates and water, and can be adapted for a variety of applications. Optional modular features can be added by the manufacturer, dealer, and in most cases the user. These optional modules include see-through water collection bowl; 12V or 24V electronic water-in-fuel sensor; 12V or 24V electric heaters; diverter heater, which uses return fuel to prevent waxing; hand priming pump; electric lift or transfer pumps; automatic air purging; filter change indicators, etc. Filter elements for the Fuel Manager Series are available in five different micron ratings: 2 micron final filter/water separator / 5 micron final filter/water separator / 10 micron pre-filter/water separator / 30 micron pre-filter/water separator / 150 micron coalescing pre-filter/water separator

Fuel Manager Pre Filters
Fuel Manager Fittings and Parts

Fuel Manager is a unique, patented, modular diesel fuel filter/water separator system that can be customized for virtually any application. Designed for use in truck, automotive, heavy equipment, marine, industrial and agricultural diesels. The completely modular system has interchangeable components that can be added or removed easily and independently. All Fuel Manager units remove both particulates and water, and can be adapted for a variety of applications. Optional modular features can be added by the manufacturer, dealer, and in most cases the user. These optional modules include see-through water collection bowl; 12V or 24V electronic water-in-fuel sensor; 12V or 24V electric heaters; diverter heater, which uses return fuel to prevent waxing; hand priming pump; electric lift or transfer pumps; automatic air purging; filter change indicators, etc. Filter elements for the Fuel Manager Series are available in five different micron ratings: 2 micron final filter/water separator / 5 micron final filter/water separator / 10 micron pre-filter/water separator / 30 micron pre-filter/water separator / 150 micron coalescing pre-filter/water separator

Fuel Manager Fittings and Parts
Mann PreLine Kits

The Protection System for Diesel Injection
Modern diesel engines use a higher injection pressure due to advanced performance requirements. Not only dirt particles but also water droplets have a direct effect on components of the injection system. This is particularly important for modern common rail systems, which place high demands on fuel quality. The injection systems used have very high requirements regarding cleanliness of the fuel. This means the fuel should contain hardly any particles and practically no water (condensate). Fuel pre-filters from MANN+HUMMEL reduce the level of contamination of the fuel with water even before the feed pump in the low-pressure circuit, thus reliably protecting the injection system. MANN+HUMMEL uses high performance multigrade media for the filtration of the fuel. The PreLine system protects the feed pump against ingress of water and coarse particles and extends the service life of the main filter. The PreLine series separates more than 93 % according to ISO/TR 16 332 of water present in the fuel and so fulfils the requirements of leading injection system producers.

Mann PreLine Kits
PreLine Accessories

The Protection System for Diesel Injection
Modern diesel engines use a higher injection pressure due to advanced performance requirements. Not only dirt particles but also water droplets have a direct effect on components of the injection system. This is particularly important for modern common rail systems, which place high demands on fuel quality. The injection systems used have very high requirements regarding cleanliness of the fuel. This means the fuel should contain hardly any particles and practically no water (condensate). Fuel pre-filters from MANN+HUMMEL reduce the level of contamination of the fuel with water even before the feed pump in the low-pressure circuit, thus reliably protecting the injection system. MANN+HUMMEL uses high performance multigrade media for the filtration of the fuel. The PreLine system protects the feed pump against ingress of water and coarse particles and extends the service life of the main filter. The PreLine series separates more than 93 % according to ISO/TR 16 332 of water present in the fuel and so fulfils the requirements of leading injection system producers.

PreLine Accessories
Baldwin Dahl Fuel Water Separators

Removes virtually 100% of water & most contaminants: The DAHL system eliminates water from fuel before reaching the fuel pump and injectors. This prevents the major cause of diesel fuel injection system failure. A DAHL fuel filter/water separator prolongs system life by eliminating pump and injector overhauls caused by water contaminated fuel. The cost of shop labor alone, just to repair the injection system on a 6-cylinder rig, exceeds the cost of the DAHL diesel fuel filter/water separator.

Many existing fuel filters aren’t designed to remove significant amounts of water. They are designed to do their job in a single step. This means they must be porous enough to allow sufficient flow volume, which limits filtering ability. Any tighter media would result in frequent element changes. DAHL fuel filter/water separators have less mechanical flow resistance than other separators, because the fuel changes direction only twice. The DAHL unit removes virtually 100% of the water and most of the contaminants from the fuel.

Baldwin Dahl Fuel Water Separators
Delphi Fuel Filter Water Separators

Delphi Diesel Filtration: The Delphi-Cav fuel filter water separators are suitable for fuel filtration and water separation. The Delphi difference when compared to other filter manufacturers.. is that their products are designed to keep up with high pressures and fine tolerances - ensuring the longest possible product life. Removing particles down to as little as 2 microns in size delivering optimum protection of the fuel injection system. A complete range of OE and aftermarket parts and components that are developed and manufactured to OE standards. Decades of expertise and innovation.

Delphi Fuel Filter Water Separators
Donaldson Fuel Filter Water Separators

Donaldson Fuel Filter for Diesel Engines


Donaldson fuel filters provide clean, filtered fuel which ultimately helps prevent pump wear, injector clogging, premature engine wear and can boost fuel efficiency. Lower restriction results in lower energy usage. Donaldson manufactures a comprehensive range of spin-on, cartridge and fuel/water separator filters for diesel engines. Donaldson's durable fuel filter/water separators trap contaminants carried in the fuel and strip away water that can damage your engine. Designed to meet or exceed OE requirements, Donaldson's products are built to the highest standard, utilising quality materials and back by a full aftermarket warranty.

Donaldson’s third generation of Synteq fuel filter water separator media contains cellulose and melt-blown synthetic layers to achieve the highest level of fuel filtration performance. This multi-layered media is ideal for critical applications and offers: • Increased particulate holding capacity • High performance water separation • High efficiency emulsified water separation • Ability to be used on both the suction and pressure sides of fuel systems • Extended service intervals. 

Donaldson Guide to Fuel Filter Flow Rates >

Donaldson Fuel Filter Water Separators
Hifi Fuel Filter Water Separators

Every combustion engine, whether diesel or petrol, is equipped with one or more fuel filters to ensure absolute protection of the components concerned and their optimal functioning. The quality of the filter is crucial to prevent impurities from reaching the injection system or the carburettor and thus clogging them. In some cases, it also ensures that the water in the fuel is perfectly separated. Condensation in the tank can cause water to contaminate the fuel, cause seizure of the injectors and lead to corrosion damage. Effective and appropriate separation is therefore necessary to prevent these risks and ensure long-term engine performance.

Fuel Filters for all Fuel Injection Systems
Modern diesel engines incorporate very high pressure direct injection systems (over 2,000 bar), known as common rail, in order to comply with CO2 emission regulations. These modern but sensitive injection systems require ever finer filtration to avoid breakdowns. A well-maintained fuel system extends the life of your engine, improves its performance and reduces fuel consumption. The fuel filter must therefore be regularly checked and replaced according to the manufacturer's recommendations. Hifi-Filter is able to provide you with this quality equipment, regardless of the type of your engine.

Hifi Fuel Filter Water Separators
Bulk Storage Fuel Separators

Clean, dry diesel is more important today than ever before. Without it, your operations are susceptible to unplanned downtime and increased costs. Is dirty diesel preventing you from achieving your goals?

The sophistication of today's equipment requires higher fluid cleanliness levels than before. Donaldson bulk tank filtration systems help save on costly component replacement, prevent unplanned downtime and prevent a decrease in fuel efficiency due to injector wear. Our bulk filtration systems reduce your total cost of equipment ownership. Clean diesel is free of the contaminants that harm modern diesel engines.

Today, virtually no diesel fuel is fit for use in high pressure common rail (HPCR) engines when it is delivered to an operator’s bulk tanks. Clean Diesel is necessary for the proper functioning of modern equipment. Without it, you risk increased downtime and inflated maintenance costs. Clean diesel is obtained by filtering your fuel upon delivery, protecting it from ambient dirt and moisture while it is in storage, and filtering it again when dispensing into your equipment.

Bulk Storage Fuel Separators
Mr Funnel

The Mr. Funnel Fuel Filter is specially designed to filter out water, dirt, and debris from most fuels including, gasoline, diesel, heating oil, and kerosene. Heavy-Duty, Fast-Flowing, Convenient & Portable ! These harmful contaminants can lead your engine to a loss of efficiency, engine shutdown, or even system failure. Comes in four different fast-flow models. Models differ mainly on flow rate. If your need is to transfer five gallons or less of fuel, then the F1 and F3 are for you. If you are transferring more then 5 gallons, then the F8 and F15 are right for you. Our F15 is our fastest flow model at up to 15 gallons per minute! This model can also be used at a fuel pump. Get your Mr. Funnel Fuel Filter today, and keep your engine running smooth!

Mr Funnel
Racor Fuel Filter Water Separators

Parker-Racor Separators: Aquabloc media to reliably remove dirt and water from diesel and gasoline fuels. Fuel contamination, either in the form of dirt, sludge or water will always find its way into your fuel system. With modern engines now injecting fuel over 2500 bar/36000 psi, and injector tolerances measured in microns, it’s not surprising that even a small amount of dirt or water corrosion can start a major problem. Water or particulates can cause microscopic surface damage, which is then focused on by the high pressure flow, to cause significant wear which will eventually lead to reduced efficiency and complete injector break-down.

Racor Marine Spin-on Series filters use Aquabloc media to reliably remove dirt and water from diesel and gasoline fuels. Aquabloc media is pleated, corrugated, and arranged for optimum water rejection and longest service life. The SNAPP Marine, Engine, Mobile Fuel Filter/Water Separator is a compact quick service filter with premium filtration capabilities. Cartridge Filter Pump Systems: Integrated Fuel Filter/Separator Pump Systems for Today's Diesel Engines and fuel polishing applications. High Pressure Fuel Filters Water Separator: The 110A Series is a high pressure capable, two piece, all aluminum fuel filter/water separator with a cartridge type filter element.

Racor Fuel Filter Water Separators
Racor Replacement Parts

Parker-Racor Separators & Replacement Elements: Aquabloc media to reliably remove dirt and water from diesel and gasoline fuels. Fuel contamination, either in the form of dirt, sludge or water will always find its way into your fuel system. With modern engines now injecting fuel over 2500 bar/36000 psi, and injector tolerances measured in microns, it’s not surprising that even a small amount of dirt or water corrosion can start a major problem. Water or particulates can cause microscopic surface damage, which is then focused on by the high pressure flow, to cause significant wear which will eventually lead to reduced efficiency and complete injector break-down.

Racor Marine Spin-on Series filters use Aquabloc media to reliably remove dirt and water from diesel and gasoline fuels. Aquabloc media is pleated, corrugated, and arranged for optimum water rejection and longest service life. The SNAPP Marine, Engine, Mobile Fuel Filter/Water Separator is a compact quick service filter with premium filtration capabilities. Cartridge Filter Pump Systems: Integrated Fuel Filter/Separator Pump Systems for Today's Diesel Engines and fuel polishing applications. High Pressure Fuel Filters Water Separator: The 110A Series is a high pressure capable, two piece, all aluminum fuel filter/water separator with a cartridge type filter element.

Racor Replacement Parts
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