SKU: 91902581949

AFE DFS780 Fuel System (Full Time Operation) 05-10 5.9L|Dodge 6.7L Cummins

Sale price$427.50 Regular price$475.00
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Description

AFE DFS780 Fuel System (Full Time Operation) 05-10 5.9L|Dodge 6.7L CumminsGrab the AFE DFS780 Fuel System with Full Time Operation for your 2005 2010 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 2005-2010 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. Each are available as single units or as a 3 pack. Simply select the option above for additional filters or check out the related products!

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SKU: 91902581949

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4.1 ★★★★★
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Harold
Alexandria, US
★★★★★ 5
Great price and Quality
Color: Khaki, Number of Items: 1
Best money ever spent on an office chair. At the time of purchase, it was less than half the price of local retail stores. Once we received it and put it together, it was top notch. Better than expected. Now time will tell how long it stays that way. Very comfortable, strong material, and easy to adjust.
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Reviewed in the United States on May 23, 2026
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AKO
Battle Creek, US
★★★★★ 5
Comfortable Even After Long Hours
Color: Black, Number of Items: 1
I purchased this chair for my husband’s home office, and it has been a great choice. The height and angle can be adjusted very easily, making it comfortable to customize. Assembly was also simple and straightforward. The size is just right, and it remains comfortable even after sitting for long periods of time without causing fatigue. Overall, the quality exceeded my expectations for the price. If it ever breaks, I would definitely purchase the same one again.
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Reviewed in the United States on May 11, 2026
M
Verified Purchase
MrDerp
Lowell, US
★★★★★ 3
Not an average-to-large person's chair by any means.
Color: Brown, Number of Items: 1
PROS: Comfortable seat cushion Feels sturdy and manufactured well Swivels and rolls effortlessly Height adjustment Not terribly heavy Easy assembly CONS: Reclining feature is not great Back cushion forces a very upright sitting posture Pleather material will deteriorate within a couple years It's overpriced for what it is, even at $100. SUMMARY: I'm a little guy. 5'7 and 145 lbs. This chair feels like it was scaled for me and my little frame. Now, while that's perfect for me, nearly everyone else I know or have ever known, are at least twice my size. And I can't imagine them finding the overall size of this thing to be enough chair for them. Maybe I'm way off base here, but I've sat in regular sized office chairs and while they'd swallow me, they're essentially perfect sized for most other people. Feels good to sit in, nothing amazing but it's comfortable enough. Remember, it's made with pleather. Every day use for long periods of time will wear the material out within two or three years. Won't effect it's performance but it will be ugly with cracks and wear/tear far quicker than real leather, of course. It looks very nice right out the box though. Not too heavy either. The reclining feature is a bummer, it's like you really have to force it to lean back, like it's fighting against your doing so. Which if your trying to lean back, you know putting a bunch of effort into your legs is the opposite of what you're trying to achieve - which is relax without tension in any part of your body. It's basically useless for my needs, anyway. The price, even at a measly $100 for an "executive office chair" does not reflect the hiccups with this thing because it's not a one size fits all kind of chair. Anyone over 180 lbs and 5'10 will surely find it to be a bit snug and the back cushion to sit a bit short. The back forces you to sit very upright. Something that will take getting used to, especially since I can't recline. This chair is kinda "meh" to be completely honest. I'll spend at least twice as much next time and get five times the quality. Look, it'll do the job for a while but there really isn't anything very impressive about it besides what it visually looks like. I've no idea how so many people rated this thing with so many glowing reviews. There's not a lot to boast about with a cheap $100 pleather chair that's undersized for most people. I really don't get it. I'd only recommend this at $65-$70. No way this is worth the $100 Amazon is currently pricing it at. Spend just a little a bit more, you'll notice a huge jump in quality over this.
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Reviewed in the United States on August 15, 2024
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MrTruth
Dallas, US
★★★★★ 3
Just Great!
Color: Beige, Number of Items: 1
Comfortable. Wheels roll very well. Great padding. Seems durable. Assembly is the standard with such chairs, takes about 15 minuttes. Do not know how long the PL? leather fabric will last? Probably wear in a couple of years. But for the price, this is perfect. UPDATE: After 2 1/2 months, seat feels flat and very uncomfortable.
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Reviewed in the United States on March 12, 2026
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VicYay
Pawtucket, US
★★★★★ 5
Modern and comfortable, easy to assemble
Color: White, Color: White
Reliable chair with solid quality. Assembly took about 35 mins following the clear instruction sheet. Chair can hold at least 220 lbs, stable and easy to move. Wheels can move in multiple directions. Seat heights and arm are both adjustable. No stain or scratches on the padding surface. White finish looks clean and modern.
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Reviewed in the United States on April 27, 2026

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