High Output Alternator for Ford F-250 F-350 (2002-2004) 5.4L 6.8L
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High-Amp Heavy-Duty Alternator for 2002-2004 Ford F-250,F-350 (Super Duty PN96)
What it Does: The 250 Amp High Output Alternator upgrades the factory charging system on the 2002-2004 Ford F-250 and F-350 to maintain consistent electrical voltage under high accessory and towing loads.
The Stock Ford F-250,F-350 Charging System Weakness
Factory alternators on PN96 Super Duty platforms produce limited stock amperage (typically 110A to 130A), which quickly falls short when running aftermarket snow plows, heavy winches, auxiliary work lights, or power inverters. Under continuous load, the OEM diode pack and internal voltage regulator suffer extreme thermal stress, leading to diode puncture, output attenuation, and premature stator burn-out under sustained engine bay heat soak.
The Engineering Solution
Engineered for high-current draw, this 250-amp unit delivers increased idle amperage and stable top-end output. Constructed with heavy-gauge pure copper windings, premium precision-ground bearings, and an internal heavy-duty bridge rectifier with high-efficiency heat sinking, it resists voltage droop and thermal failure. Built as a direct bolt-in replacement for factory assemblies like 3C3Z-10346-DA and GL-556, it maintains seamless OE mounting geometry.
What's Included
- 1 x 250 Amp High Output Alternator
Technical Specifications
| Fitment | 2002-2004 Ford F-250,F-350 |
|---|---|
| Engine / Chassis | 5.4L / 6.8L Modular Triton / PN96 |
| Stock Output | 260–310 hp / 350–425 lb-ft |
| Replaces OEM Part # | 3C3TDA, GL-556, GL556, 8310, AL7617X, 3C3T10300DA, 3C3Z10346DA, 334-2533, 8310N, 8310R, 2C3U-10300-AA, 2C3U-10300-AB, 2C3Z-10346-AA, 2C3Z-10346-AARM, 2C3Z-10346-AB, 2C3U-AA, 2C3U-AB, 2C3Z-10V346-ABRM, 3C3T-10300-DA, 3C3Z-10346-DARM, 3C3Z-10V346-DBRM, 8310-250A |
Compatibility
- 2002-2004 Ford F-250 Super Duty 5.4L V8
- 2002-2004 Ford F-250 Super Duty 6.8L V10
- 2002-2004 Ford F-350 Super Duty 5.4L V8
- 2002-2004 Ford F-350 Super Duty 6.8L V10
Frequently Asked Questions & Fitment Warnings
Does this fit the PN96 F-250,F-350?
Yes, this is a direct fit for the 2002-2004 Ford F-250,F-350 equipped with the Modular Triton 5.4L V8 or 6.8L V10 gas engines. It does not fit 7.3L or 6.0L Power Stroke diesel variants.
Do I need to upgrade my main battery charge wire?
Yes, upgrading your primary charging lead to a fused 4-gauge or 1/0-gauge copper cable is strongly recommended to safely carry the full 250-amp capacity without voltage drop.
The Ford Super Duty Standard
Built to handle extreme towing duty cycles and severe fleet work conditions, this high-output alternator delivers uncompromised 12V stability to safeguard your electrical system under heavy commercial loads.
Fitment
Fitment
Warranty
Warranty
