1999-2003 Powerstroke 7.3L Injector Drive Module (AP65120) 5.9L 12V 4L's have been somewhat plagued

4L's have been somewhat plagued with clogged and failed factory oil coolers

4 to 1 gear reduction

Demand a stronger part

4L Head Stud Kit (318034600)

reducing gear shifting and providing a new high-end horsepower levels

1999-2003 Powerstroke 7.3L Injector Drive Module (AP65120) 5.9L 12V 4L's have been somewhat plagued1999 2003 Powerstroke 7. 3L Injector Drive Module (AP65120) Many common issues to the 7. 3L's can be blamed on a poorly functioning IDM. A faulty IDM will cause serious injector firing issues that lead to hard starts, rough idle, excessive smoke, poor performance, and lack of fuel economy. Alliant completely rebuilds these units to bring them back to factory spec and thoroughly tests them to ensure accurate and reliable operation.