SKU: 7470857661

AFE 42-12021 DFS780 Fuel System (Full-Time Operation)

Sale price$648.45 Regular price$720.50
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USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Sep 6 - Sep 11

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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
Shipping Restrictions Apply This product can not be shipped to these states/provinces: CA
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:
  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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 7470857661

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4.5 ★★★★★
Based on 27 reviews
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Aerdnua24
Carnegie, US
★★★★★ 4
Light it up!
Color: 3000K Warm, Size: 2Roll x 16.4ft, Color: 3000K Warm, Size: 2Roll x 16.4ft
I am very happy with these. They are easy to use. The only reason I am not giving a five star review is because the instructions and assembly weren’t the easiest. At first we could not get them to work. After looking through the reviews, one man told us that the -\+ were backwards and we tried what he suggested and they worked. I do suggest that because there are two light reels there should be two connecter boxes as well. We had to purchase two packages. Overall, We are satisfied with our purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 9, 2026
C
Verified Purchase
Chris
Boise, US
★★★★★ 1
Quality just isn’t there
Color: 3000K Warm, Size: 2Roll x 16.4ft
Was very excited to receive this product because I had difficulty lighting op these LED strip lights, this looks like a package that had everything that I needed. First off, the strip lights themselves are very thin with wise and would look funny on my project, the adhesive backing did not stick at all once removed The touch sensor works great for about 10 minutes and then completely died, overall not impressed with the quality of this product, sending back
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 4, 2026
N
Verified Purchase
north80
Belleville, US
★★★★★ 5
Excellent Cabinet Lights!
Color: 3000K Warm, Size: 1Roll x 16.4ft
Great cabinet lights. Easy to install and connect. The touch less control is handy and works well to dim and turn the lights on and off. Been using them for half a year now. No complaints.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 30, 2025
T
Verified Purchase
Thomas H Gilmore
New York, US
★★★★★ 5
Works great
Color: 3000K Warm, Size: 1Roll x 16.4ft, Color: 3000K Warm, Size: 1Roll x 16.4ft
works well
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Reviewed in the United States on March 19, 2026
K
Verified Purchase
KlyToons
Boise, US
★★★★★ 5
Bright, Sleek, and Easy to Install – Perfect Under Cabinet Lighting!
Color: 6500K White, Size: 1Roll x 16.4ft
I’m extremely happy with the CUBITOR Under Cabinet COB LED Light Strip kit! The 6500K daylight brightness is perfect—super clean, crisp, and evenly distributed with no visible dots thanks to the COB design. It really upgraded the look of my kitchen and made food prep so much easier. Installation was straightforward and hassle-free. The strip is flexible and cuttable, which made it easy to customize for my space. The adhesive backing is strong, and everything feels high quality and well-made. One of my favorite features is how smooth and diffused the lighting is—it gives a modern, high-end feel without being harsh on the eyes. It’s also very energy-efficient and stays cool even after hours of use. Overall, this is an excellent lighting solution for cabinets, shelves, or workspaces. Highly recommend it to anyone looking for bright, professional-looking LED lighting!
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Reviewed in the United States on April 9, 2026

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