SKU: 42092372909

aFe Diesel Fuel Systems DFS780 Series 03-04.5 Dodge Diesel 5.9L L6 (Full Time Operation)

Sale price$606.15 Regular price$673.50
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  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 13 - Jul 18

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Description

aFe Diesel Fuel Systems DFS780 Series 03-04.5 Dodge Diesel 5.9L L6 (Full Time Operation)The diesel fuel in your truck contains contaminants dirt, water and air vapor which is reducing power and damaging your diesel fuel injectors. aFe's POWER DFS780 Diesel Fuel System, with its patent pending design, is capable of removing power robbing debris such as air, water and other contaminants. The DFS780 also boosts fuel pressure ensuring constant availability for the high pressure pump, improving throttle response and horsepower at all RPMs.

The diesel fuel in your truck contains contaminants dirt, water and air/vapor which is reducing power and damaging your diesel fuel injectors. aFe's POWER DFS780 Diesel Fuel System, with its patent-pending design, is capable of removing power-robbing debris such as air, water and other contaminants. The DFS780 also boosts fuel pressure ensuring constant availability for the high-pressure pump, improving throttle response and horsepower at all RPMs.

  • Helical Spur Gears Runs Quieter That Straight Cut Gears
  • Marine Grade Motor Protects Against Dust And Water
  • Clear High Impact Polycarbonate Sight Glass
  • Contoured CNC Manifold Enhances Flow
  • Typical Install Is 2 Hours
  • Fuel Pressure Gauge Port
  • OE Quality Viton Seals
  • Built In The U.S.A.

This Part Fits:

Year Make Model Submodel
2003 Dodge Ram 2500 Laramie
2003-2004 Dodge Ram 2500 SLT
2003-2004 Dodge Ram 2500 ST
2003-2004 Dodge Ram 3500 Laramie
2003-2004 Dodge Ram 3500 SLT
2003-2004 Dodge Ram 3500 ST
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
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  • 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: 42092372909

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4.2 ★★★★★
Based on 370 reviews
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Product Reviews
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Verified Purchase
grog
Chelsea, US
★★★★★ 5
If pump doesn't seem to work
Size: For 85-300 HP, Size: For 85-300 HP
Hi....I apologize it took me a while to get back to you with my results. Here is what I discovered about the pump and will also apply to some of the other comments I read in the reviews with people not getting the pump to work: 1.) I removed the pump to check the proper direction of the impeller and it was correct as can be seen in the photo. 2.) I built a pump shaft attachement so that I could operate the pump with a power drill. 3.) I attached the water muff to the unit and tried to pump water.....it wouldn't do so. What I did see however was that even at high hose discharge and small leakage at the muff I could not fill the water cavity in the housing. 4.) I installed a strap around the muff and tightened it very tight and THEN at high hose pressure I was able to get the cavity to fill with water. 5.) At that point I activated the drill and was able to get the pump to actually pump water. I then removed the pump housing and removed the O-Ring that resides on top of the impeller, reassembled and it would not pump water. Since the O-Ring sits higher than the original does I wanted to make sure that it was necessary to have it in the pump. 6.) I reassembled the engine and kept the tight strap on the bottom and finally it pumped water into the engine. My conclusion that you can reply to other buyers if they have a problem: Do NOT underestimate 2 things....1.)the lack of ability of the pump to draw water up AND 2.)the fact that if the muff leaks it will NOT fill the cavity when common sense says it should. This was a 120hp Johnson. The engine bottom must be immersed fully or the muff must be very tight on the lower unit for the pump to function. Please feel free to post this if you wish.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 12, 2024
M
Verified Purchase
Monchita
Belleville, US
★★★★★ 5
Exelente
Size: For 85-300 HP
Exelente
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 21, 2026
D
Verified Purchase
Dave Murray
Omaha, US
★★★★★ 5
Good as new
Size: Package Dimensions ‎6.02 x 4.02 x 2.05 inches
Fitment was great and works as it should. Good quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2025
K
Verified Purchase
Kenny
Waukegan, US
★★★★★ 3
Incorrect motor listed. Far smaller impeller than what's in the 6 horse johnson.
Size: For 5.5HP 6HP 7.5HP
It seems to be of good quality. However it does not fit a 6 horse johnson as it states. Therefore it will not pump water or function for my purposes. It was a waste of money.
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Reviewed in the United States on October 15, 2025
O
Verified Purchase
Outcast
Lexington, US
★★★★★ 5
Good product
Worked for what I needed. Fit great and easy to install.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026

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