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Jim said on 08/07/2014
Fuel Transfer Pump Kit For 2003 - 2004 Dodge Cummins
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Part Number: AP4089602
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Fuel Transfer Pump Kit For 2003 - 2004 Dodge Cummins ISB Common Rail Fuel Systems. Effective in October 2006, Dodge no longer offered an external mounted fuel transfer pump for model year 2003-2004 common rail equipped engines as a service part. Soon after, Cummins followed suit by discontinuing part number 4089602, leaving the installation of a Dodge in-tank fuel transfer pump module as the only OE option. Alliant Power now offers AP4089602 Fuel Transfer Pump Kit that includes virtually the same pump as the former Cummins part number, plus installation hoses and hardware (which eliminate the need to purchase a separate 3969705 hose when a pump with a non-removable inlet hose is replaced), and an inline fuel filter.
The fuel transfer pump (item 11 in the illustration above) is attached to the rear of the fuel filter/water separator housing (item 10). The 12 volt pump is operated and controlled by the engine control module (ECM). Maximum duty cycle to the pump is 5 amps. When the engine is running, the transfer pump has a 100% duty-cycle with a pressure of 9.5 - 11.5 psi. Minimum flow is 420ml in 10 seconds, using a DRB to actuate the pump. When the key is first turned on (without cranking the engine), the pump will operate for approximately 0.5 second and then shut off. The pump will also operate for up to 25 seconds after the starter is engaged, and then disengaged if the engine is not running. The pump shuts off immediately if the key is on and the engine stops running.
Cummins Part#s : 4089602, (Hose # : 3969705)
Chrysler Part# : 05093135AB
Note: Application info may not be 100% accurate. Please read the above description to confirm that this part will fit your vehicle.