2003-2004 Ford 6.0L Power Stroke FICM (Built 9/22/2003 and Later) | Alliant Power AP65123 Remanufactured
This is the Alliant Power AP65123, a fuel injection control module (FICM) remanufactured by Alliant Power for the Ford 6.0L Power Stroke with an engine built on or after 9/22/2003: F-Series Super Duty through the 2004 model year, and the Excursion through 1/31/2005. It comes pre-programmed, so it does not need dealer programming for the trucks it is listed for. It replaces Ford 4C3Z12B599ABRM. A refundable core applies. The same module sold with no core is AP65123N.
A weak FICM shows up as hard cold starts, a rough or stumbling idle until the engine warms up, a miss under load or a crank with no start. Low battery or charging voltage does the same thing and is what kills these modules, so load test both batteries and check the alternator before you fit a new one. Stuck injector spool valves on a cold engine can look like a bad module too.
Confirm Fitment Before You Order
Three pre-programmed numbers cover the 6.0L and they do not swap: AP65122 for engines built before 9/22/2003, AP65123 for 9/22/2003 through 2004 (Excursion through 1/31/2005), and AP65124 for 2005 to 2007 F-Series, Excursion built 2/1/2005 on and 2004 to 2010 E-Series. Send us your VIN and the engine build date from the engine data sticker. Call 530-668-0818 and we will confirm the exact match at no charge before anything ships.
Specifications
| Part number | AP65123 |
| Brand | Alliant Power |
| Condition | Remanufactured |
| Warranty | Alliant Power 24-month, unlimited-mileage warranty. |
| Type | Fuel injection control module (FICM) |
| Engine | Ford 6.0L Power Stroke |
| Engine build date | 9/22/2003 and later |
| Vehicles | 2003-2004 F-Series Super Duty, Excursion through 1/31/2005 |
| Programming | Pre-programmed |
| Remanufactured by | Alliant Power |
| Core charge | Refundable in full when we receive your rebuildable core |
| Shipping weight | 6 lb |
Fits / Applications
- 2003 to 2004 Ford F-250, F-350, F-450 and F-550 Super Duty, 6.0L Power Stroke, engine built 9/22/2003 or later
- Ford Excursion, 6.0L Power Stroke, built 9/22/2003 through 1/31/2005
- Engines built before 9/22/2003 take AP65122. 2005 to 2007 F-Series, Excursion built 2/1/2005 on and E-Series take AP65124.
Disconnect both batteries before you unplug the module. Check the harness connectors for bent pins and oil, and fix weak batteries or a weak alternator first, because low system voltage is the usual reason a FICM fails.
Part Numbers & Cross Reference
Alliant Power AP65123 · Ford 4C3Z12B599ABRM · Ford 4C3Z-12B599-AB · Alliant Power no-core version AP65123N
Cross-reference numbers can change with engine serial, build year and emissions tier, so treat this list as a starting point. Send us your engine serial number and we will confirm the exact match against your build before anything ships. That check is free and takes a few minutes.
Frequently Asked Questions
Does the AP65123 need to be programmed?
No. It comes pre-programmed for the 6.0L Power Stroke it is listed for. Pick the number by engine build date.
How do I know whether my truck takes the AP65123?
Go by the engine build date on the engine data sticker. This number is for engines built on or after 9/22/2003, through 2004 on F-Series and through 1/31/2005 on the Excursion. Earlier engines take AP65122 and 2005 to 2007 trucks take AP65124. If you are near a changeover date, call 530-668-0818 with your VIN.
What Ford number does the AP65123 replace?
It replaces Ford 4C3Z12B599ABRM, also written 4C3Z-12B599-AB.
Is it new or remanufactured, and is there a core?
It is remanufactured by Alliant Power. A refundable core applies and comes back when we receive your old module.
Related Parts
- 2003 Ford 6.0L Power Stroke FICM, Built Before 9/22/2003, No Core | Alliant Power AP65122N Remanufactured
- 2003 Ford 6.0L Power Stroke FICM (Engines Built Before 9/22/2003) | Alliant Power AP65122 Remanufactured
- 2003-2004 Ford 6.0L Power Stroke FICM Control Module | Alliant Power AP65123N Remanufactured (No Core)
- 2004-2007 Ford 6.0L Power Stroke & VT365 EGR Cooler Kit | Alliant Power AP63446 New
Why Buy From Valley Fuel Injection
We are a diesel fuel-injection and turbocharger shop in Woodland, CA, rebuilding pumps, injectors and turbos on our own benches since 1993, not a drop-ship storefront. When you call, you talk to the people who test these units. We verify fitment against your engine serial, VIN or build date before anything ships, so the right part arrives the first time.
UPS Ground anywhere in the lower 48. A refundable core deposit is added at checkout and refunded in full when we receive your rebuildable core. Questions on fitment? Call 530-668-0818.
Pricing covers the unit itself. Any applicable sales tax and the refundable core charge are additional; shipping is calculated at checkout. Buying tax-exempt? Qualifying diesel repair shops, fleets, farms, and agricultural operations can purchase tax-free. Set up tax-exempt purchasing once and every qualifying order is tax-free going forward.
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