2003 Ford Truck F250 Super Duty Engine Wiring Harness — Part # FGX2 — Spalding Auto Parts · Spokane, WA

Product Details
$274Part Number
FGX2
Vehicle
2003 Ford Truck F250 Super Duty
Description
Fitment & Buyer Verification
This engine wiring harness is designed for 2002–2003 Ford Truck F250 Super Duty models equipped with the 7.3L Powerstroke diesel engine and automatic transmission. It is a direct replacement part matching OEM numbers such as F81Z-12B637-FA and 1837761C91, suitable for 4x4 configurations without California emissions.
Vehicle Compatibility
Use these records to confirm the vehicle match before purchase.
| Check | What to verify | Buyer action | Basis |
|---|---|---|---|
| Model Year | 2002-2003 | Confirm this detail before ordering. | |
| Vehicle Model | Ford Truck F250 Super Duty | Confirm this detail before ordering. | |
| Engine Type | 7.3L Powerstroke Diesel | Confirm this detail before ordering. | |
| Transmission Type | Automatic | Confirm this detail before ordering. | |
| Drivetrain | 4x4 | Confirm this detail before ordering. |
Configuration Details
Match trim, equipment, and listing-specific details against your vehicle.
| Check | What to verify | Buyer action | Basis |
|---|---|---|---|
| Emissions Configuration | Non-California emissions | Verify emissions compliance for your vehicle, especially if California emissions apply. | |
| Part Number Match | F81Z-12B637-FA, 1837761C91, P659932, or 12B637 | Confirm the part number stamped on the harness matches one of these OEM numbers before purchase. |
Included Component Checks
Review what appears to be included and what still needs confirmation.
| Component | Status | Note | Confidence |
|---|---|---|---|
| Engine wiring harness assembly | verify | Includes connectors and sensor plugs; inspect for broken clips or damage before installation. | Medium |
Buyer Verification Checklist
- Confirm vehicle year, model, engine type, and transmission match the harness specifications.
- Verify the part number on the harness matches OEM numbers F81Z-12B637-FA or 1837761C91.
- Inspect connectors and clips for damage or wear, especially sensor plug clips.
- Check emissions configuration compatibility, particularly for California vs. non-California vehicles.
Condition & Inspection Notes
- Check for intact connectors and sensor plug clips to ensure proper fitment and function.
- Inspect wiring insulation for cracks, breaks, or corrosion.
- Confirm no missing or damaged terminals or pins.
Product Fitment FAQs
This harness is specified for automatic transmission models only; compatibility with manual transmissions is uncertain and should be verified.
This harness is listed for non-California emissions configurations; verify compatibility if your vehicle is California-spec.
References
Dealer Information
Dealer area: Spokane, WA. Exact dealer coordinates are unavailable; call to confirm the address.
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