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Description
AFE 42-12021 DFS780 Fuel System (Full-Time Operation)The AFE 42 12021 DFS780 Fuel System with Full Time Operation for your 2003 2004. 5 Dodge 5. 9L Diesel offers you a complete fuel system solution to replacing the factory lift pump in your Ram 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
The AFE 42-12021 DFS780 Fuel System with Full-Time Operation for your 2003-2004.5 Dodge 5.9L Diesel offers you a complete fuel system solution to replacing the factory lift pump in your Ram 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 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
WARRANTY INFO:
1 Year
Disclaimer: GAP is in no way affiliated with Cummins or any of its subsidiaries or related companies, and that Cummins has not authorized the sale of any of GAP's parts, and has not tested or approved any of GAP’s parts for use in genuine Cummins brand products.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- 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]
- Please click here for more details>>> Return & Exchange Policy
4.5 ★★★★★
Based on 17 reviews
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Product Reviews
★★★★★ 5
Get the ball!
Size: Large
I have 2 cattle dogs. One blue heeler and one blue heeler/aussie mix that is blind and completely ball crazy. We have gone through a hundred balls over the years and this is by far the best. It can be kicked (with think boots not running shoes), thrown, or rolled by the dog if you have one of those types. One of my dogs is a chewer and he hasn't put a dent in it, in months. The ball bounces when kicked/thrown and makes that odd noise when its hit just right so its extra entertaining for the dogs but also let's our blind dog know where its at. Can't say enough good things about this ball, worth trying for sure! It's also easy to drop in the creek, sink or tub to rinse off.
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Reviewed in the United States on March 6, 2026
★★★★★ 3
Noise + Durability Issues
Size: Medium
Was really hopeful for this toy. Our boy loves playing outside with balls, but likes to run and play tug with them. We wanted to find a ball to play tug with and saw the handles on these, plus it was made by Kong and many reviews said it withstood their super chewers. The material didn’t stand a chance against my dog. Already took chunks of it out in the first 20 min. The other thing was the noise level of the squeaker. It’s unbearably loud. To the point I had to stop giving it to my dog because he squeaked it so much I felt it was disturbing the neighbors. So overall, wouldn’t recommend unless you have a lot of land, plan on using it indoors, and don’t have a super chewer dog.
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Reviewed in the United States on March 4, 2026
★★★★★ 5
Great Value Toy
Color: Crinkle Duck (Blue), Size: Large, Color: Crinkle Duck (Blue), Size: Large
This toy has been one of my dog’s absolute favorites. He gets excited every time he sees it and will carry it around the house, toss it in the air, and keep himself entertained for a long time. The shape and texture seem perfect for him, and it quickly became one of his go-to toys over everything else in his basket.
What I really like is that it holds up reasonably well for the price. It’s definitely not indestructible, and after a lot of play, it will sometimes start to rip—usually around the feet first since that’s where my dog tends to grab and chew the most. But honestly, considering how affordable it is, I don’t mind replacing it when needed. It’s inexpensive enough that rebuying feels worth it because he genuinely loves it that much.
I’d rather keep buying a toy he is obsessed with than spend more on something that just sits untouched. It’s fun, cute, and keeps him happy, which is what matters most. Overall, I’d definitely recommend it for dogs who love plush toys and playful chewing.
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Reviewed in the United States on April 28, 2026
★★★★★ 5
Best affordable squeaker toy
Color: Crinkle Chicken (Brown), Size: Large, Color: Crinkle Chicken (Brown), Size: Large
my dog is obsessed with this toy, this has became his new comfort toy and after having this for about four months the legs are falling off but it’s very durable. The squeaker also moved from the head of the chicken to the body of the chicken but that’s after it was played with every single day. I love that it has two squeakers and it’s the perfect toy for my dog.
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Reviewed in the United States on May 6, 2026
★★★★★ 5
Beautiful design, perfect quality for seasoned destroyers.
Color: Crinkle Duck (Yellow), Size: Large
Absolutely adorable, excellent quality, I have a couple of monsters whose teeth make any kong toy tremble, I was very concerned whether something as soft and nice would last. So far so good.
Good looking and soft and tough at the same time!.
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Reviewed in the United States on May 12, 2026