The Alliant Power AP4089602 is a new fuel transfer pump kit for 2003–2004 Dodge Ram 5.9L Cummins applications. Alliant’s Fuel Transfer Unit moves fuel through the fuel system to support engine fuel delivery.

Features & Benefits

• New Alliant Power Fuel Transfer Pump Kit (Alliant P/N AP4089602)
• Fit, form, and function tested to meet or exceed original-equipment standards (per Alliant Power)
• Direct replacement for 3969705 / 4089602 / 5086499AF
• Backed by Alliant Power’s 24-month, unlimited-mileage warranty

Application

• Dodge Ram 2500 / Ram 3500 (2003–2004)

Always verify fitment against your VIN, engine, and OE part number before ordering.

Cross-Reference / Replaces

• Cummins: 3969705, 4089602
• Mopar: 5086499AF, 5093135AB, 5093135AA, 5086499AE, 5086499AD, 5086499AC, 05093135AB
• Delphi: HFP943
• Alliant Power: AP4089602

Warranty: Alliant Power’s standard warranty: 24 months with unlimited miles/hours on installed parts (Alliant Power warranty policy, rev. Aug 2025).