Dodge truck 3.9 Liter engine ECU 

56040037

Up for Sale is a Working, in excellent condition dodge truck engine ECU. My list shows this works with most 1999 3.9 Liter Trucks. Part number listed at the top or in the large pictures. Check the part number 0n your original unit to be sure this is right for your Truck.Will interchange with:

05018488AA

56040037AA

56040037AB

56040037AC

56040037AD

56040037AE

56040037AF

56040037AG

These are very hard to find in good working condition. This unit was runtested & is functional, and offers a 30 day warranty. Please be sure to double check the part number off your original unit before buying. A defective unit is one of the most common no start or random stalling problems with these trucks. They can also be the cause of erroneous check engine lights, cold or hot start problems, or idle control malfunctions. If yours does not have problems, keep an extra ECU in the trunk, you might some day be glad you did... These units are very expensive to buy new. Thanks for looking!