SKU: 13956164609

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

Sale price$450.00 Regular price$500.00
Save 10%

Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 12 - Jul 17

Promo Codes Available:

For Your Every Summer RSVP, with Code: SUMMER15

Description

AFE 42-12031 DFS780 Fuel System (Full-Time Operation)The AFE 42 12031 DFS780 Fuel System with Full Time Operation for your 2005 2010 Dodge 5. 9L 6. 7L Diesel offers you a complete fuel system solution to replacing the factory lift pump in your Dodge 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 42-12031 DFS780 Fuel System with Full-Time Operation for your 2005-2010 Dodge 5.9L/6.7L Diesel offers you a complete fuel system solution to replacing the factory lift pump in your Dodge 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

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. 


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: 13956164609

Discover Niche Categories That Outsell

Top-Converting Item to Boost Your Average Order

4.8 ★★★★★
Based on 1028 reviews
Sort
Highest Rating
Newest First
Oldest First
Product Reviews
D
Verified Purchase
Dave Roberts
Waukegan, US
★★★★★ 5
Well worth the price.
Great fit and quality feel.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 3, 2025
S
Verified Purchase
Sheikh617
Draper, US
★★★★★ 5
I if are a last minute shopper this brand is fully recommended
Color: Dark Blue, Size: XX-Large
It was a best choice. Last minute on time delivery great quality everything was perfect. The quality the size the comfort everything was top notch great material and also the price 👍
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
S
Verified Purchase
Steele S
San Leandro, US
★★★★★ 5
True to size
Color: Black, Size: XX-Large
It came right on time vs the other 1 I ordered. It's true to size
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
K
Verified Purchase
Kanwal Mansoor
Battle Creek, US
★★★★★ 5
Fitting it good!
Color: Army Green, Size: X-Large, Color: Army Green, Size: X-Large
My husband loved it. Looks a little different when u took the pic but it’s the same color as the ad photo For reference my husbands 5’11 and 225lbs totally recommend and it’s cotton.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 17, 2026
W
Verified Purchase
Will Smith
San Leandro, US
★★★★★ 5
Good Product
Color: White, Size: XX-Large
Good Product
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 20, 2026

recommand products