SKU: 92577317273

AFE DFS780 Fuel System (Full Time Operation) 03-04.5 Dodge 5.9L Cummins

Sale price$427.50 Regular price$475.00
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Description

AFE DFS780 Fuel System (Full Time Operation) 03-04.5 Dodge 5.9L CumminsGrab the AFE DFS780 Fuel System with Full Time Operation for your 2003 204. 5 Cummins 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

Grab the AFE DFS780 Fuel System with Full Time Operation for your 2003-204.5 Cummins 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 full time operation model bypasses your stock lift pump taking the reigns to keep your Cummins roaring with constant power.

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!

Enter AFE's DFS780 Fuel System, this powerful system does not require you to modify your fuel tank, instead it by passes your existing lift pump and works as your full time fuel system. As such, the DFS780 removes the remainder of the power-robbing entrained air, water, and contaminants directly stimulating the performance of your Cummins. 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:
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.

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.

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

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 92577317273

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Capri Cheatham
Birmingham, US
★★★★★ 5
Worth it
Love love love this product. I bought it for myself and my sister very nice feeling after a good shower. Smells good not too much for bed or for outside.
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Reviewed in the United States on May 9, 2026
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Barbara W
West Palm Beach, US
★★★★★ 5
Worth it
Okay first night using and I’m in love. Smells amazing. I’m particular about my vanillas but this is light but strong. Doesn’t disappear right away sits on the skin nice and drifts on the air as a nice aroma. Dries down wonderfully too. I did have to use a few pumps to cover each part of my body but so worth it. It’s not greasy at all and gives a nice glow. Application was easy and I do feel moisturized. Looking for the lotion version now to layer over top it.
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Reviewed in the United States on May 21, 2026
K
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Karen Froschauer
Phoenix, US
★★★★★ 5
A GREAT OIL FOR YOUR SKIN
I JUST REVIEWED THE LOTION WHICH I LOVED AND I ALSO LOVE THIS OIL. I THOUGHT THIS WAS A LITTLE BIT PRICEY BECAUSE THE BOTTLE IS A BIT SMALL HOWEVER YOU REALLY ONLY NEED A SMALL AMOUNT AS A LITTLE GOES A LONG WAY. IT ABSORBS INTO YOUR SKIN NICELY WITHOUT FEEL OVERLY GREASY AND IT LEAVES YOUR SKIN SOFT AND SMELLING VERY NICE. THE SMELL IS LOVELY BUT IT ISN'T A REAL STRONG SMELL AND THE VANILLA ISN'T OVERLY SWEET EITHER. IT IS THE PERFECT VANILLA. IT LEAVES YOUR SKIN REFRESHED AND I LOVE IT !! IT GOES GREAT WITH THE LOTION.
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Reviewed in the United States on April 24, 2026
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K. M. Woods
Grantham, US
★★★★★ 5
Very moisturizing with a great vanilla scent
I love this body oil. Very hydrating and smells amazing. It has replaced the original Palmer’s cocoa butter, body oil for me just because I like the smell better. It leaves my skin looking glowy and feels so smooth. I smell like vanilla all day. I like the pump top. It is easier to apply. Very silky consistency
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Reviewed in the United States on May 26, 2026
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Christina
Houston, US
★★★★★ 5
Love the smell and great for my skin
This has become a permanent part of my shower routine. I use it right after I turn the water off while I am still wet, I cover my entire body from the neck down using about 8-10 pumps. I will wrap my body in a towel and finish getting ready (brush teeth, face moisturizer and blow drying hair) and then I will gently rub the towel everywhere incase there is any excess oil after it had the time to absorb into my skin. I dont think it leaves any greasiness at all, its really lightweight. What I love most of all is the smell though. A very nice, light, sweet vanilla smell lingers on your skin until your next shower. You have to put your nose pretty close to your skin to smell it so you wont be bothering anyone who had scent sensitivities. I have been using this for almost a year now and I still keep bringing my forearm to my nose to smell my skin because I love it so much. My skin has improved so much since I started using this.
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Reviewed in the United States on May 18, 2026

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