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USD 149
Part #: AFE42-90001

AFE 42-90001 DFS780 Fuel System Cold Weather Kit

For use on AFE DFS780 Fuel Systems
Part #: AFE42-90001
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Keep your truck running in the coldest conditions with the AFE 42-90001 DFS780 Fuel System Cold Weather Kit on your DFS780 Fuel System. AFE's Cold Weather Kit easily plumbs into your engine's cooling system to warm your fuel to avoid gelling in freezing temperatures. Fits all DFS780 and DFS780 Pro Fuel Systems. Includes AFE Pro Guard D2 Fuel Filter.

  • Warms Fuel To Help Eliminate Gelling
  • Fits All AFE DFS780 & DFS780 Pro Fuel Systems 
Install Note: Heater Hose that connects the coolant spacer to the cooling system is not included and must be sourced by the end user. 


  • MFG. Number 42-90001
  • Manufacturer Name AFE
  • Shipping Weight 4.70 lb.
  • Shipping Length 8 in.
  • Shipping Width 8 in.
  • Shipping Height 8 in.
  • Fuel Type Diesel
  • UPC 802959420140
  • Warranty Yes
  • Warranty Info 2 Year Limited
  • Prop 65 WARNING: Cancer & Reproductive Harm -


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XDP continues to closely monitor the COVID-19 (Coronavirus) outbreak. As an integral part of the automotive supply chain, at this point all call centers and distribution centers remain fully operational to ensure we keep vital service components flowing to vehicles used in transport of goods and emergency response. To ensure the health of our employees, families, and customers, we have made the following procedural changes:

  • UPDATE: Effective 6/1 Customer Service resumes normal business hours of M-F 8:30 – 9:00pm EST.
  • Effective 3/18 we have decided to temporarily close both of our retail stores in NJ and NV.
  • Our technical sales team remains available Mon-Fri 8:30am-9pm and Saturday 10:30am-7pm EST.
  • All employees have been encouraged to follow the CDC's recommendations at home and in the workplace.
The circumstances of this virus are fast moving, as such, we will continue to update you with any further operational adjustments as needed. As always, we value your business and appreciate your patience as we manage this situation together.