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Fuel Filters

  • Mahle Fuel Filter, MAHLE-KL287 Mahle
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    Fuel Filter, MAHLE-KL287 Mahle

    $29.98
    MAHLE-KL287-BC
  • Mahle Fuel Filter, MAHLE-KL571 Mahle
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    Fuel Filter, MAHLE-KL571 Mahle

    $37.98
    MAHLE-KL571-BC
  • Mahle Fuel Filter, MAHLE-KL572 Mahle
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    Fuel Filter, MAHLE-KL572 Mahle

    $37.98
    MAHLE-KL572-BC
  • Mahle Fuel Filter, MAHLE-KL83 Mahle
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    Fuel Filter, MAHLE-KL83 Mahle

    $19.98
    MAHLE-KL83-BC
  • Mahle Fuel Filter, MAHLE-KL96 Mahle
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    Fuel Filter, MAHLE-KL96 Mahle

    $99.98
    MAHLE-KL96-BC
  • Mahle Genuine Mahle Fuel Filter KL38
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    Genuine Mahle Fuel Filter KL38

    $43.41
    MAHLE-KL38
  • Mahle Genuine Mahle Fuel Filter KL670 for Buick Reatta 3.8L 1990-1991
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    Genuine Mahle Fuel Filter KL670 for Buick Reatta 3.8L 1990-1991

    $15.98
    Mahle-KL670-58815
  • Mahle Genuine Mahle Fuel Filter KL670 for Buick Riviera 3.8L Supercharged 1990-1992
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    Genuine Mahle Fuel Filter KL670 for Buick Riviera 3.8L Supercharged 1990-1992

    $15.98
    Mahle-KL670-58814
  • Mahle Genuine Mahle Fuel Filter KL670 for Cadillac Eldorado ALL 
1990-1992
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    Genuine Mahle Fuel Filter KL670 for Cadillac Eldorado ALL 1990-1992

    $15.98
    Mahle-KL670-58816
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Astra ALL 2000-2008
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Astra ALL 2000-2008

    $15.98
    Mahle-KL670-58818
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Corsa ALL 2002-2008
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Corsa ALL 2002-2008

    $15.98
    Mahle-KL670-58819
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Meriva ALL 2004-2008
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Meriva ALL 2004-2008

    $15.98
    Mahle-KL670-58820
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Tornado ALL 2004-2009
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Tornado ALL 2004-2009

    $15.98
    Mahle-KL670-58821
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Vectra ALL 2003-2005
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Vectra ALL 2003-2005

    $15.98
    Mahle-KL670-58822
  • Mahle Genuine Mahle Fuel Filter KL670 for Chevrolet Zafira ALL 2002-2006
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    Genuine Mahle Fuel Filter KL670 for Chevrolet Zafira ALL 2002-2006

    $15.98
    Mahle-KL670-58823
  • Mahle Genuine Mahle Fuel Filter KL670 for Daewoo Lanos ALL 1999-2002
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    Genuine Mahle Fuel Filter KL670 for Daewoo Lanos ALL 1999-2002

    $15.98
    Mahle-KL670-58825

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Understanding Fuel Filters

Fuel filters are a key component in any fuel delivery system, ensuring that contaminants such as rust, dirt, and debris don't reach your engine. Keeping your fuel clean helps maintain performance, efficiency, and engine longevity. Quantum Fuel Systems offers high-quality fuel filters designed for both OEM replacement and performance applications, built for reliability under all driving conditions.

What Is a Fuel Filter?

What Is a Fuel Filter?

A fuel filter is a small but essential part of your vehicle’s fuel system that screens out impurities before fuel reaches the engine. It ensures clean fuel enters the combustion chamber, promoting efficient burning and protecting injectors and pumps. At Quantum Fuel Systems, fuel filters are engineered to match the flow needs of high-performance and stock systems alike.

Types of Fuel Filters

Types of Fuel Filters

Fuel filters come in several designs: inline, canister, cartridge, and in-tank integrated types. Inline filters are external and easy to replace, while in-tank models are built into the fuel pump assembly. Quantum Fuel Systems supplies direct-fit options across all formats, including filters for powersports, automotive, and marine applications—each designed for maximum filtration and flow.

Signs of a Failing Fuel Filter

Signs of a Failing Fuel Filter

A clogged or failing fuel filter can cause rough idling, loss of power, hard starts, or engine misfires. You might also notice decreased fuel efficiency. If left unchecked, it can stress other fuel system components like pumps and injectors. Replacing a fuel filter at recommended intervals with a high-quality unit from Quantum Fuel Systems prevents these issues and keeps your engine running clean.

Choosing the Right Fuel Filter for Your Vehicle

Selecting the right fuel filter ensures optimal engine performance and longevity. Whether you're maintaining a daily driver or building a high-performance setup, the correct filter helps safeguard your fuel injectors and pump. Quantum Fuel Systems offers a full range of OEM replacement and high-flow performance filters, each tailored to fit specific vehicle applications and fuel system requirements.

OEM Replacement vs. Performance Upgrades

OEM Replacement vs. Performance Upgrades

OEM replacement fuel filters are built to match factory specs and are ideal for routine maintenance. Performance upgrades, on the other hand, are designed for higher flow rates, offering improved filtration and better support for modified engines. Quantum Fuel Systems supplies both types—ensuring reliable filtration whether you're preserving stock performance or pushing for more power.

Compatibility and Fitment

Compatibility and Fitment

Fuel filters must be matched precisely to your vehicle’s fuel system to function properly. This includes size, flow direction, connector type, and pressure tolerance. QFS offers direct-fit filters for a wide range of vehicles and powersports equipment, making it easy to find the perfect match without guesswork or modification.

Fuel Filter Assemblies

Fuel Filter Assemblies

Fuel filter assemblies combine the filter with essential components like housings, pressure regulators, or integrated strainers—ideal for modern vehicles or fuel pump modules. These assemblies simplify installation and help maintain consistent fuel pressure and cleanliness. Quantum Fuel Systems offers complete, ready-to-install filter assemblies for dependable performance and streamlined service.

Installation and Maintenance Tips

Proper installation and consistent maintenance of your fuel filter are vital to protecting your engine and ensuring steady fuel flow. Whether you're swapping an inline filter or replacing an in-tank assembly, following the correct steps can prevent future issues. Quantum Fuel Systems supports all installations with quality parts and expert advice for long-lasting performance.

Installation Guidelines

Installation Guidelines

Before starting, relieve fuel system pressure and disconnect the battery. Always install the filter in the correct flow direction—usually indicated by an arrow on the housing. Ensure fittings are clean and tight to prevent leaks. Quantum Fuel Systems offers easy-to-install direct-fit filters that match OEM specs, ensuring a quick and hassle-free replacement.

Maintenance Practices

Maintenance Practices

Routine fuel filter maintenance is key to optimal engine performance. Replace your filter at intervals recommended by your vehicle's manufacturer or sooner if driving in dusty or extreme conditions. High-flow performance systems may require more frequent checks. QFS filters are designed for longevity but regular inspection ensures uninterrupted, clean fuel delivery.

Troubleshooting Common Issues

Troubleshooting Common Issues

Common signs of fuel filter issues include hard starts, rough idling, or reduced engine power. If you notice these symptoms, inspect the filter for clogs or contamination. For in-tank units, you may need to check associated strainers or seals. Quantum Fuel Systems offers high-quality replacements and diagnostics support to help resolve problems quickly.

Enhancing Performance with Fuel System Upgrades

For enthusiasts and performance builders, upgrading your fuel system is essential to support increased power and efficiency. A properly matched set of components—from filters to injectors—ensures fuel flows cleanly and consistently under load. Quantum Fuel Systems provides precision-engineered parts that integrate seamlessly for high-horsepower and modified vehicles.

High-Flow Fuel Filters

High-Flow Fuel Filters

High-flow fuel filters are designed to support performance builds by handling greater fuel volume without sacrificing filtration. They help prevent pressure drops at high RPMs and protect sensitive components like injectors. Quantum Fuel Systems offers ethanol-resistant, high-flow filters that maintain clean fuel delivery in even the most demanding conditions.

Fuel Pressure Regulators

Fuel Pressure Regulators

A performance fuel system requires stable fuel pressure, especially under boost or heavy load. Upgraded fuel pressure regulators allow fine-tuned control, reducing the risk of lean conditions. QFS offers regulators compatible with high-flow systems, providing the precision needed for tuning and consistent power delivery across various driving conditions.

Fuel Injectors  and Lines

Fuel Injectors and Lines

Upgraded fuel injectors are essential for delivering the right amount of fuel to match your performance goals. Pair them with reinforced fuel lines that can withstand higher pressures and ethanol-blended fuels. Quantum Fuel Systems stocks high-flow injectors and ethanol-compatible lines, ensuring every part of your system performs reliably.

Comprehensive Fuel System Kits

Comprehensive Fuel System Kits

Fuel system kits from QFS bundle everything needed for a high-performance upgrade: pump, filters, regulator, lines, and more. These kits are engineered to work together for maximum efficiency and flow, reducing the risk of mismatched components. Whether you're building a track car or off-road beast, QFS kits deliver all-in-one fuel system performance.

Fuel Filters FAQs

Find answers to our most common questions below.

A fuel filter removes contaminants like dirt, rust, and debris from the fuel before it reaches the engine. This helps protect critical components like the injectors and fuel pump, ensuring optimal engine performance and longevity.

The best way to find the correct replacement fuel filter for your vehicle is to use the Year, Make, Model search function on the Quantum Fuel Systems website. Whether you need an in line fuel filter or a fuel pump filter, we offer a wide selection to fit various vehicles and performance needs. If you’re still having trouble, contact our customer service team with your vehicle’s year, make, model, and OEM number for assistance.

It's recommended to perform a fuel filter replacement every 20,000 to 40,000 miles, depending on your vehicle and driving conditions. Regularly replacing your fuel pump filter or in line fuel filter helps maintain efficient fuel flow and prevents damage to your fuel system. For more information about when to replace your fuel filter, see our blog.

Yes, Quantum fuel filters are designed for both everyday and high-performance applications. Our micron filters provide excellent fuel filtration, ensuring your engine receives clean fuel, whether you're using a stock setup or a modified, high-performance system.

A micron filter refers to the filtration level of the fuel filter, measured in microns. The smaller the micron rating, the finer the particles the filter can trap. High-performance fuel filters often use a low-micron filter to prevent even the smallest contaminants from entering the engine.

Yes, Quantum fuel filters are built to the same high standards of quality and durability as Mahle filters. Both brands provide excellent filtration for high-performance and everyday use, ensuring your engine gets clean fuel and your fuel system remains protected.

An in line fuel filter is installed along the fuel line, typically between the fuel tank and the engine. This type of filter is easy to replace and is commonly found in performance applications to keep fuel clean and flowing to the engine without obstruction.

Regularly replacing your fuel filter is crucial to maintaining your vehicle’s performance and extending the life of your fuel system. Contaminants and debris found in modern fuels can clog your fuel filter, leading to poor engine performance, reduced fuel efficiency, and even costly fuel pump damage. Our selection of fuel filters, including in-line and universal options, ensures that your engine receives clean fuel for optimal performance. Whether you need a standard fuel filter replacement or a high-performance solution, we offer reliable filters to keep your vehicle running smoothly. Don't wait—protect your fuel system and shop our wide range of fuel filters today!

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About Us

quantum fuel systems blk

QFS was born from a desire for freedom: the freedom to keep your ATV, dirt bike, car, or truck running with dependable, OEM-quality, and affordable fuel systems. We want you back on the road without breaking the bank. Skip the costly dealership—our replacement parts ship directly to you and are easy to install. Enjoy OEM performance with unbeatable US-based support and a lifetime warranty. Are you with us?

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