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SKU #: AFE-42-14024 MPN #: 42-14024

AFE DFS780 Fuel System (Boost Activated) 17-19 6.6L GM 6.6L Duramax L5P

$950.00$1,000.00
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Description Overview
Grab the AFE DFS780 Fuel System with Boost Activation for your Duramax powered Chevy or GMC and be amazed with the difference between AFE's fuel system vs other aftermarket brands. Four years of testing is what it takes to make a fuel system perfect, and AFE spent the time to make sure that they developed a system that has no rival. Instead of a lengthy and time consuming installation like other brands, the DFS780 installs in just a few hours for immediate use. The boost activated model switches on anytime the supplied present boost switch identifies a certain level of boost, meaning the pump is only working when it needs to, extending the overall life of the pump.It's easy to get caught up in the aftermarket excitement, especially with things that add an instant boost in awesomeness. A bigger-better suspension system, great injectors, roaring exhaust, an air guzzling cold-air intake; these all deliver kick in the pants power gains, and let's face it, are just plain fun. But it is important to remember that adding all these aftermarket parts require you to strike a balance with all aspects of your truck, and a very important aspect is fueling. In fact an upgraded fuel system becomes increasingly more important with each aftermarket item, failure to replace or improve your stock lift pump could leave you high and dry! The DFS780 removes the remainder of the power-robbing entrained air, water, and contaminants directly stimulating the performance of your Duramax. You'll also notice improved throttle response as well as increased horse power and torque at all RPMs. Unlike other brands, AFE designed the DFS780 as a single filter system; other brands use two filters, one for the fuel and another to separate water. Instead, AFE integrated clear water separation bowl attached to the high-efficiency fuel filter eliminating the need and expense of replacing two filters. The water separator bowl is reusable and can be emptied easily. AFE recommends changing the DFS780 fuel filter every 10 to 20 thousand miles. While the DFS780 can definitely be equipped to a completely stock vehicle, you will notice the most gains with an assortment of aftermarket parts that require better fuel and better fueling. Each DFS780 unit is tested at AFE to ensure peak performance, the unit is flowed and rated at a minimum of 2.0gpm (gallons per minute), this rating can support over 2000HP. Along with added horsepower the DFS780 will also increase the performance of your truck while towing. By proving enough fuel for even the toughest towing situations you'll notice almost no loss of power. Replacing the fuel filter on your DFS780 is easy and can be replaced with either an AFE or Donaldson filter. FEATURES: Clear High-Impact Polycarbonate Sight Glass: Allows visual inspection of fuel. Helical Bronze Spur Gears: Billet 6061-T6 Aluminum Manifold: Eliminates porosity concerns with cast aluminum. "Marine Grade" Motor: Protected against dust intrusion and powerful water jets. Plug Play Installation: Supplied harness attaches directly to battery and utilizes Deutsch weather-proof connectors. No cutting or modifications of the stock fuel lines required. Vehicle can easily be returned to stock. Boost Activated Pump Engagement: Supplied preset boost switch activates pump only under load, reducing wear and tear on the DFS780 pump. PEEK Bearing Wear Surfaces: The DFS780 spur gears ride on PEEK (Polyether Ether Ketone) bearing surfaces to reduce both noise and wear. Contoured CNC Machining Of Manifold Passages: Enhances flow through the manifold to reduce pressure drop due to flow restrictions. Direct Bolt-on Steel Mounting Bracket: Heavy duty bracket mounts to the frame and utilizes existing hole to secure. Fuel Pressure Gauge Port: 1/8" NPT port allows customer to attach an external pressure gauge to monitor fuel pressure. O.E Quality Viton Seals: Compatible with diesel and biodiesel fuels. Note: This system is not currently CARB exempt and is not available for sale in California.

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A boost activated fuel system upgrade for the Duramax L5P, flowed and rated at a minimum of 2.0gpm to support over 2000HP.

Fits
2017-2019 6.6L GM Duramax L5P
Brand
AFE
Best for
Supporting aftermarket power and towing fuel demands
Key features
  • Clear high-impact polycarbonate sight glass for visual fuel inspection
  • Helical bronze spur gears
  • Billet 6061-T6 aluminum manifold eliminates porosity concerns
  • Marine grade motor protected against dust and water jets
  • Plug and play installation with weather-proof Deutsch connectors, no cutting required
  • Boost activated pump engagement reduces wear and tear on the pump
  • PEEK bearing wear surfaces reduce noise and wear
  • Contoured CNC machined manifold passages enhance flow
  • Direct bolt-on steel mounting bracket
  • Fuel pressure gauge port for external gauge monitoring
  • O.E. quality Viton seals compatible with diesel and biodiesel
Key specs
  • 2.0 gpm minimum flow
  • supports over 2000HP
  • 1/8" NPT gauge port
Important
This system is not currently CARB exempt and is not available for sale in California.
Grab the AFE DFS780 Fuel System with Boost Activation for your Duramax powered Chevy or GMC and be amazed with the difference between AFE's fuel system vs other aftermarket brands. Four years of testing is what it takes to make a fuel system perfect, and AFE spent the time to make sure that they developed a system that has no rival. Instead of a lengthy and time consuming installation like other brands, the DFS780 installs in just a few hours for immediate use. The boost activated model switches on anytime the supplied present boost switch identifies a certain level of boost, meaning the pump is only working when it needs to, extending the overall life of the pump.

It's easy to get caught up in the aftermarket excitement, especially with things that add an instant boost in awesomeness. A bigger-better suspension system, great injectors, roaring exhaust, an air guzzling cold-air intake; these all deliver kick in the pants power gains, and let's face it, are just plain fun. But it is important to remember that adding all these aftermarket parts require you to strike a balance with all aspects of your truck, and a very important aspect is fueling. In fact an upgraded fuel system becomes increasingly more important with each aftermarket item, failure to replace or improve your stock lift pump could leave you high and dry!

The DFS780 removes the remainder of the power-robbing entrained air, water, and contaminants directly stimulating the performance of your Duramax. You'll also notice improved throttle response as well as increased horse power and torque at all RPMs.

Unlike other brands, AFE designed the DFS780 as a single filter system; other brands use two filters, one for the fuel and another to separate water. Instead, AFE integrated clear water separation bowl attached to the high-efficiency fuel filter eliminating the need and expense of replacing two filters. The water separator bowl is reusable and can be emptied easily. AFE recommends changing the DFS780 fuel filter every 10 to 20 thousand miles.

While the DFS780 can definitely be equipped to a completely stock vehicle, you will notice the most gains with an assortment of aftermarket parts that require better fuel and better fueling. Each DFS780 unit is tested at AFE to ensure peak performance, the unit is flowed and rated at a minimum of 2.0gpm (gallons per minute), this rating can support over 2000HP.

Along with added horsepower the DFS780 will also increase the performance of your truck while towing. By proving enough fuel for even the toughest towing situations you'll notice almost no loss of power.

Replacing the fuel filter on your DFS780 is easy and can be replaced with either an AFE or Donaldson filter.

FEATURES:

Clear High-Impact Polycarbonate Sight Glass:
Allows visual inspection of fuel.

Helical Bronze Spur Gears:
Billet 6061-T6 Aluminum Manifold:
Eliminates porosity concerns with cast aluminum.

"Marine Grade" Motor:
Protected against dust intrusion and powerful water jets.

Plug Play Installation:

Supplied harness attaches directly to battery and utilizes Deutsch weather-proof connectors. No cutting or modifications of the stock fuel lines required. Vehicle can easily be returned to stock.

Boost Activated Pump Engagement:
Supplied preset boost switch activates pump only under load, reducing wear and tear on the DFS780 pump.

PEEK Bearing Wear Surfaces:
The DFS780 spur gears ride on PEEK (Polyether Ether Ketone) bearing surfaces to reduce both noise and wear.

Contoured CNC Machining Of Manifold Passages:

Enhances flow through the manifold to reduce pressure drop due to flow restrictions.

Direct Bolt-on Steel Mounting Bracket:
Heavy duty bracket mounts to the frame and utilizes existing hole to secure.

Fuel Pressure Gauge Port:
1/8" NPT port allows customer to attach an external pressure gauge to monitor fuel pressure.

O.E Quality Viton Seals:
Compatible with diesel and biodiesel fuels.

Note: This system is not currently CARB exempt and is not available for sale in California.

EXECUTIVE ORDER #D-550-37
Manuals and Guides
Vehicle Fitment
2017-2019 6.6L GM Duramax L5P
WARNING: Cancer & Reproductive Harm - P65Warnings.ca.gov
About AFE
AFE POWER PERFORMANCE PARTS AND ACCESSORIES

Since its founding in 1999, AFE Power (Advanced Flow Engineering) has been a leader in diesel performance. Built to improve airflow, fuel efficiency, and overall vehicle power, AFE Power products are engineered to handle the demands of diesel enthusiasts and professionals alike.

From AFE cold air intakes to high-performance exhausts, AFE Power offers a complete lineup of parts to boost your truck’s performance. Whether you’re running a Cummins, Powerstroke, or Duramax engine, Diesel Power Products has a full range of AFE Power parts to maximize your vehicle’s potential.

AFE COLD AIR INTAKE SYSTEMS FOR MAXIMUM AIRFLOW

One of AFE Power’s best-known products is the AFE cold air intake system, designed to increase airflow and improve combustion efficiency. With options for both open and closed systems, AFE cold air intakes are built to optimize horsepower and throttle response. For those aiming to push their trucks to the limit, these intakes provide the airflow needed for consistent, powerful performance.

AFE FILTERS FOR DIESEL ENGINES

AFE filters are made with various filter media to suit different driving environments. Choose from the Pro 5R, Pro 10R, Pro-GUARD 7, and Pro DRY S filters to achieve the right balance of airflow and filtration. Engineered with multiple layers of protection, AFE filters capture finer debris while maintaining excellent airflow, extending your engine's life and efficiency.

AFE POWER EXHAUST SYSTEMS FOR ENHANCED PERFORMANCE

Upgrading to an AFE Power exhaust system reduces backpressure and increases exhaust flow, allowing for improved performance and fuel efficiency. Built with premium materials, these exhausts provide a deeper sound without compromising factory emissions. AFE Power’s exhaust options help you achieve a cleaner, more efficient burn while adding an aggressive tone to your truck’s performance.

ABOUT ADVANCED FLOW ENGINEERING (AFE)

Headquartered in Corona, California, Advanced Flow Engineering (AFE) is known for its high-tech, in-house manufacturing and testing facilities, which include capabilities like CNC machining, CAD design, dyno testing, and more. With a commitment to quality and innovation, AFE Power continues to push the boundaries in diesel performance parts, delivering products that meet the needs of today’s diesel enthusiasts.

SHOP AFE PARTS AT DIESEL POWER PRODUCTS

Diesel Power Products is proud to offer a comprehensive selection of AFE parts for diesel trucks. From cold air intakes and filters to exhaust systems and tuners, we carry everything you need to upgrade your diesel truck with high-performance AFE Power products. Our experts are here to help you find the right parts for your specific needs.