SKU: 22818889631

aFe DFS780 Fuel Pump (Full-time Operation) (42-12031)

Sale price$441.00 Regular price$490.00
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  • USA
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Ships within 48 hours · Estimated delivery Aug 10 - Aug 15

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Description

aFe DFS780 Fuel Pump (Full-time Operation) (42-12031)Full Time Diesel Fuel System (42 12031) by aFe. The diesel fuel in your truck contains contaminants, water and air vapor which is reducing power and damaging your diesel fuel injectors. Introducing the aFe POWER DFS780 Diesel Fuel System, with its patent pending design capable of removing power robbing entrained air, water and contaminants. The DFS780 also boosts fuel pressure ensuring constant availability for the high pressure transfer pump,

Full-Time Diesel Fuel System (42-12031) by aFe. The diesel fuel in your truck contains contaminants, water and air/vapor which is reducing power and damaging your diesel fuel injectors. Introducing the aFe POWER DFS780 Diesel Fuel System, with its patent-pending design capable of removing power-robbing entrained air, water and contaminants. The DFS780 also boosts fuel pressure ensuring constant availability for the high-pressure transfer pump, improving throttle response and horsepower at all RPMs. The DFS780 was designed from the beginning to eliminate weaknesses found in other "fuel transfer" system. aFe has spent almost four years engineering what we feel is the best, most reliable system available. Depending on the specific application, we offer features such as boost-activated fuel flow increase, a high-impact polycarbonate "sight glass" to visually check fuel conditions, a reliable "marine grade" motor and Viton seals to name a few.

aFe (Advanced Flow Engineering, Inc.) manufactures performance products for late model cars, light trucks and SUVs. The company was founded in 1999 with an initial concentration on high performance air filters. Since then, the company product line has broadened to include cold air intakes, fluid filters, exhaust systems, intake manifolds, intercoolers, programmers, differential covers, transmission pans and throttle body spacers. The team of engineers, machinists, production and sales people at aFe have many years of experience in their respective positions, and together work to ensure they produce the best automotive products on the market.

Features:

  • Clear High Impact Polycarbonate Sight Glass
  • Helical Spur Gears Runs Quieter That Straight Cut Gears
  • Marine Grade Motor Protects Against Dust And Water
  • Contoured CNC Manifold Enhances Flow
  • Fuel Pressure Gauge Port
  • OE Quality Viton Seals
  • Typical Install Is 2 Hours
  • Built In The U.S.A.
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: 22818889631

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4.2 ★★★★★
Based on 15 reviews
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nj_captiva
San Leandro, US
★★★★★ 4
Nice and warm
Color: Khaki, Size: 32W x 32L
My husband LOVES these pants for cold weather. They look nice and were very comfortable. It would be nice if they came in longer lengths.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
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Verified Purchase
Cam's Dad
Louisville, US
★★★★★ 5
Love these!
Color: Dark Grey, Size: 32W x 30L
As many previous reviews state these pants are incredibly comfortable. They are very warm. They wash up well. We’ll see how they last but my initial impressions are very good on these pants. I will order more color because I have to wear a nice pants for work, but I’m outside alive and they fit the Bill by not looking like trek pants or hiking pants. For reference I’m 5’5” and weigh about 150lbs. I ordered 32x30 and love the fit. I’ve ordered other colors because I like them so much.
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Reviewed in the United States on January 7, 2026
A
Verified Purchase
Amazon Customer
Alexandria, US
★★★★★ 5
Dry and warm
Color: Dark Khaki, Size: 32W x 32L
Perfect! Good fit, keeps me dry and warm while golfing.
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Reviewed in the United States on December 29, 2025
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Verified Purchase
J D
Omaha, US
★★★★★ 5
Warm
Color: Dark Grey, Size: 34W x 30L
Don’t hold a crease very well but fit nicely and expandable waist is nice and warm
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Reviewed in the United States on January 25, 2026
A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 5
Toasty and comfortable
Color: Dark Grey, Size: 36W x 32L
These pants keep the wind out so that are perfect for the cold windy days on the course
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Reviewed in the United States on February 19, 2026

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