Answer
Apr 13, 2026 - 08:17 AM
Yes. This BTR engine wiring harness is the 4C3Z‑12B637‑AA style harness, which is the version with the factory fuel‑heater circuit and connector for 9/30/03–11/4/04 build 6.0L trucks.
does this have the fuel heater BTR Engine Wiring Harness for Ford (2004-05) 6.0L (4C3Z-12B637-AA) (9/30/03-11/4/04)
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Open Jan 03, 2026 - 09:04 AM
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BTR Engine Wiring Harness for Ford (2004-05) 6.0L (4C3Z-12B637-AA) (9/30/03-11/4/04)
• High-quality design • Direct replacement for OEM Ford 4C3Z-12B637-AA • Best option available to replace the OE harness • Engine Build Date 9/30/03 till 11/4/04
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