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Part #: AFE42-12031

AFE 42-12031 DFS780 Fuel System (Full-Time Operation)

2005-2010 Dodge 5.9L/6.7L Cummins (Replaces Factory Lift Pump)
Part #: AFE42-12031
$835.05 $793.30
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Description

The AFE 42-12031 DFS780 Fuel System with Full-Time Operation for your 2005-2010 Dodge 5.9L/6.7L Cummins offers you a complete fuel system solution to replacing the factory lift pump in your Cummins pickup. The fuel in your truck contains contaimants, water and air/vapor which reduces power and can cause damage to your injectors. The AFE DFS780 Fuel System features a patent-pending design capable of removing power-robbing entrained air, water and contaminants. The DFS780 ensures constant availability for your CP3 injection pump, while improving throttle response and horsepower at all RPMs.

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

Helical Bronze Spur Gears:
Bronze gears more forgiving of contaminants than steel gears. The Helical spur gear design runs quieter than straight cut gears.

Billet 6061-T6 Aluminum Manifold:
Eliminates porosity concerns with cast aluminum.

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

Horsepower & Flow:
The DFS780 can be used on a totally stock truck, it was engineered for modified vehicles. BSFC (Brake Specific Fuel Consumption) for most modern turbocharged diesel engines is about 0.36 lbs/HP/hr. Since #2 diesel weighs about 7 pounds/gallon, which gives us about 19.5 HP/gallon/hr. The DFS780 will flow enough fuel (at rated pressure) to support over 2000 HP.

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.

Relay Controlled:
The DFS780 is powered by your ignition and can be run independently or in parallel with the stock fuel 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.

Features:

  • Bypasses OE Fuel Pump (Full-Time Operation)
  • "Worry Free" 2 Year Warranty
  • Built In The U.S.A

Note: This system is not currently CARB exempt and is not available for sale in California or for use on any vehicle registered with the California Department of Motor Vehicle. 





Specifications

  • MFG. Number42-12031
  • Manufacturer NameAFE
  • Shipping Weight17.00 lb.
  • Shipping Length19 in.
  • Shipping Width11 in.
  • Shipping Height8 in.

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Questions and Answers

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Most Popular Questions

What is the difference between full time and part-time switch version? Are there installation differences?
View Staff Answer 
Answer

The Full-Time Operation system is designed to replace your factory lift pump. The Part-Time Operation system is designed to work in conjunction with your factory fuel system using a supplied preset boost switch. This switch activates the pump only under load, reducing wear & tear on both the DFS780 and the stock lift pump. (Installation will differ between the two systems.)

Can this full time model be installed without removing the factory lift pump?
View Staff Answer 
Answer

The lift pump must be removed – Click Here to view the Install Sheet

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