FASS Diesel Fuel Systems & Parts

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    • FASS Fuel Systems® - D-Max Diesel Fuel Pump Flow Enhancer
      (0 reviews)
      # sp118205
      D-Max Diesel Fuel Pump Flow Enhancer by FASS Fuel Systems®. Duramax diesel engines do not come with a factory lift pump, this is why Duramax owners see such great performance and economy gains after installing an aftermarket diesel fuel...
      Reduces Factory CP3/CP4 WorkloadDelivers Fuel Under Pressure
      $398.05 - $417.05
    • FASS Fuel Systems® - Fuel Suction Tube Kit
      (0 reviews)
      # sp21961
      Fuel Suction Tube Kit by FASS Fuel Systems®. Includes Bulkhead Fitting. Our FASS Fuel Systems Bulkhead Fitting are machined from 6061 T-6 Billet Aluminum and 5/8 Convoluted Suction Tube are designed to function as both a suction point...
      Both Suction Tube and Return PortIncrease Fuel Delivery
      $84.55 - $94.05
    • FASS Fuel Systems® - Replacement Banjo Bolts
      (0 reviews)
      # sp21962
      Replacement Banjo Bolts by FASS Fuel Systems®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      High quality at an affordable priceExpertly made from premium materials
      $51.30
    • FASS Fuel Systems® - Mounting Package
      (0 reviews)
      # sp95405
      Mounting Package by FASS Fuel Systems®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      High quality at an affordable priceExpertly made from premium materials
      $20.90 - $205.20
    • FASS Fuel Systems® - Fuel Suction Tube Upgrade Kit
      (0 reviews)
      # sp95403
      Fuel Suction Tube Upgrade Kit by FASS Fuel Systems®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      High quality at an affordable priceExpertly made from premium materials
      $56.05
    • FASS Fuel Systems® - Adjustable High Performance Fuel Pump
      (2 reviews)
      # sp137716
      Adjustable High Performance Fuel Pump by FASS Fuel Systems®. FASS Adjustable Diesel Fuel Pumps are designed to be the most versatile high performance fuel pump on the market that allows for adjustable fuel pressures to meet the demand...
      Adjustable Fuel PressureHigh Performance Flow Rate
      $493.05 - $730.55
    • FASS Fuel Systems® - Adjustable Diesel Fuel Lift Pump
      (0 reviews)
      # sp127516
      Adjustable Diesel Fuel Lift Pump by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Improves Fuel FlowBoost Compensation Port
      $398.05 - $564.30
    • FASS Fuel Systems® - Titanium Series Fuel Air Separation System
      (4 reviews)
      # sp137720
      Titanium Series Fuel Air Separation System by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      High quality at an affordable priceExpertly made from premium materials
      $630.80 - $773.30
    • FASS Fuel Systems® - Replacement DDRP Relocation Kit
      (0 reviews)
      # sp137719
      Replacement DDRP Relocation Kit by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      High quality at an affordable priceExpertly made from premium materials
      $56.05 - $99.75
    • FASS Fuel Systems® - Direct Replacement Diesel Fuel Pump
      (0 reviews)
      # sp137717
      Direct Replacement Diesel Fuel Pump by FASS Fuel Systems®. This product is made of high-quality materials to sere you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Larger More Powerful MotorFactory Replacement Pump
      $297.35 - $360.05
    • FASS Fuel Systems® - Duramax Factory Fuel Filter Delete Kit
      (0 reviews)
      # mpn458143492
      Duramax Factory Fuel Filter Delete Kit by FASS Fuel Systems®. Fuel Filter Replacement Component Type: Housing. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and...
      Eliminates Your Factory Fuel FilterSaves Money On Replacement Filters
      $77.90
    • FASS Fuel Systems® - Replacement 14 Gauge Wiring Harness
      (0 reviews)
      # mpn3190415385
      Replacement 14 Gauge Wiring Harness by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $59.85
    • FASS Fuel Systems® - Adjustable Fuel Pressure Regulator
      (0 reviews)
      # mpn458143547
      Adjustable Fuel Pressure Regulator by FASS Fuel Systems®. The FASS Fuel Systems Adjustable Fuel Pressure Regulator is intended for aftermarket performance applications requiring higher fuel pressures than a typical daily driver. These...
      Adjustable Fuel PressureGas or Diesel Applications
      $141.55
    • FASS Fuel Systems® - Heater Bushing
      (0 reviews)
      # mpn458143551
      Heater Bushing by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $11.40
    • FASS Fuel Systems® - Fuel Line Connector
      (0 reviews)
      # 835780235
      Fuel Line Connector by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $9.50 - $12.35
    • FASS Fuel Systems® - Titanium Signature™ Diesel Fuel Lift Pump
      (0 reviews)
      # 1343650145
      Titanium Signature™ Diesel Fuel Lift Pump by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      $664.05 - $844.55
    • FASS Fuel Systems® - Diesel Fuel Sump Kit
      (0 reviews)
      # 905062195
      Diesel Fuel Sump Kit by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Lowers Fuel Suction LocationEliminates 1/4" Tank Fuel Issue
      $151.05 - $236.55
    • FASS Fuel Systems® - Double Vent Return Line Kit
      (0 reviews)
      # mpn458143542
      Double Vent Return Line Kit by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $165.20
    • FASS Fuel Systems® - Double Return Line
      (0 reviews)
      # mpn458143539
      Double Return Line by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $129.80
    • FASS Fuel Systems® - FA Replacement Pump
      (0 reviews)
      # 403947924
      FA Replacement Pump by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $289.75 - $432.25
    • FASS Fuel Systems® - Titanium Series Replacement Fuel Filter
      (0 reviews)
      # mpn1981724592
      Titanium Series Replacement Fuel Filter by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $20.90
    • FASS Fuel Systems® - Fuel Feed Line
      (0 reviews)
      # mpn458143537
      Fuel Feed Line by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great...
      Designed to provide enhanced fuel economyWill increase horsepower and torque of your engine
      $116.82
    • FASS Fuel Systems® - HD Series Replacement Pump
      (0 reviews)
      # 403947980
      HD Series Replacement Pump by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      High quality at an affordable priceExpertly made from premium materials
      $261.25 - $403.75
    • FASS Fuel Systems® - HD Series Diesel Fuel Filter Replacement
      (0 reviews)
      # mpn4478520070
      HD Series Diesel Fuel Filter Replacement by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your...
      High quality at an affordable priceExpertly made from premium materials
      $33.25
    • FASS Fuel Systems® - Titanium Series Replacement Fuel Filter
      (0 reviews)
      # 538879505
      Titanium Series Replacement Fuel Filter by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs...
      High quality at an affordable priceExpertly made from premium materials
      $19.00 - $20.90
    • FASS Fuel Systems® - Titanium Signature Series Fuel Air Separation System
      (0 reviews)
      # mpn4561862010
      Titanium Signature Series Fuel Air Separation System by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $801.80
    • FASS Fuel Systems® - Titanium Signature Series Fuel Air Separation System
      (0 reviews)
      # mpn4561861955
      Titanium Signature Series Fuel Air Separation System by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $801.80
    • FASS Fuel Systems® - Titanium Signature Series Fuel Air Separation System
      (0 reviews)
      # mpn4561862165
      Titanium Signature Series Fuel Air Separation System by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will...
      High quality at an affordable priceExpertly made from premium materials
      $801.80
    • FASS Fuel Systems® - Replacement Base Spring
      (0 reviews)
      # mpn4495849749
      Replacement Base Spring by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      $2.85
    • FASS Fuel Systems® - Replacement Base Spring
      (0 reviews)
      # mpn4495849825
      Replacement Base Spring by FASS Fuel Systems®. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver...
      $2.85




    With over 20 years of manufacturing experience in the diesel fuel industry, FASS Fuel Systems soars miles ahead of the pack with its highly efficient performance filtration products. The brand offers the “cleanest” Fuel Air Separation Systems (FASS) and the “quietest” electric diesel fuel pumps ever made. FASS takes great pride in their state-of-the-art filtration technology that helps maximize engine performance and injectors lifespan. Die-hard engine builders and performance junkies all over the world rely on FASS when it comes to superior diesel parts.

    The idea for FASS was born in the early ‘90s when Brad Ekstam decided to build a top-of-the-line fuel/air separation system. In 2003, he started making FASS fuel systems in his own garage, using his knowledge in the anatomy of the ride. Thanks to Brad’s relentless passion and enthusiasm, innovative FASS products instantly earned the respect from diesel gearheads. From its humble beginnings in the garage to modern facilities in Marthasville, MO, FASS has evolved into the world-renowned leader in performance diesel fuel systems. With FASS, you can fuel up your diesel passion, from pickup truck to Class 8.

    FASS Diesel Fuel Systems is your trusted choice for performance diesel parts, from high-efficiency fuel filter & water separation systems to cutting-edge fuel pumps, to replacement filters. The brand goes the extra mile with a host of breakthrough features such as FASS Silencing Technology (FST), Performance Radius Cuts (PRC), and Mass Flow Return (MFR). Rely on FASS Fuel Systems products to unleash your diesel beast under the hood while safeguarding your injectors and boosting fuel economy. These second-to-none filtration systems are specially designed to keep air, vapor, and dirt where they belong – out of your fuel. Treat your engine with the cleanest burning fuel possible using the most versatile FASS Fuel Systems Titanium Series. This is the key to huge jumps in horsepower and torque, as well as quick cold weather starts.

    If you want to uncork the unbridled power lurking within the hood, FASS Fuel Systems is right up your alley. The brand pushes the limits of design and innovation to give your rev-happy diesel engine the purified fuel it needs to run at its peak for billions of miles to come. FASS air/ fuel filtration systems are just the way to adjust your vehicle's performance from meek to mean while increasing your engine's reliability. The brand stands out for making competition-grade Gerotor specific fuel pumps that last up to 700,000+ miles. When FASS performance pumps and filters work in tandem, you can enjoy the cleanest and the quietest rides ever. They're sure to help lower EGT’s, as well as bring harmful carbon monoxide and carbon dioxide emissions down. FASS diesel products are built with American ingenuity and precision, from bullet-proof strong 6061 T-6 Aircraft quality aluminum. They’re in the league of their own when it comes to astounding operation under the most challenging conditions. Whether it’s a Class 8 hauling Pittsburgh steel or a pickup truck in the cattle country, FASS Diesel Fuel Systems has got you covered with the highest quality parts built to last. At FASS Fuel Systems, they take great pride that their parts are designed, machined, and assembled in the USA. This way they Pledge their allegiance to the Flag of America and guarantee that diesel vehicles powering the industry will get the performance they deserve.

    FASS Reviews

    Average rating:    4.9 - 6 reviews
    5 of 5
    FASS Fuel System
    Great product.
    Posted by James (West Malling, KEN) / July 30, 20182003 Chevy Silverado
    Was this review helpful for you? Yes
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