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6.0L Power Stroke Diesel 2003 - 2007 F250, F350 pickup and F350+ Cab Chassis, 2003 - 2005 Excursion and 2003 - 2009 van

Injector harness

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Old Aug 11, 2025 | 03:06 PM
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Injector harness

I have a 2004 f350 6.0. Build date is 10/03. I need a injector harness and some websites show multiple different ones and others show they are the same 03-07. Is there actually a difference and if so what it is it? Im leaning towards the bostech because of cost. Just wanted to varify that theres a difference if i should go by the build date or the year of the truck. Thanks for your time it is appreciated
 
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Old Aug 11, 2025 | 06:55 PM
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All I can tell you is there is a difference.
 
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Old Aug 11, 2025 | 09:59 PM
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Your build date is October 2003 so that means you'll need the standalone FICM harness. If you had an early 2003 with a build date of Fall 2002, you'd need a whole new engine harness and FICM harness as the two were one at that time. Later 2003 trucks shipped with the FICM and engine harness separate.
 
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Old Aug 12, 2025 | 06:17 AM
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Had a tough day yesterday, now that I have time ...

Individual Injector Harnesses. The plugs for the throttle body changed (2005+ none), and the routing, if I remember correctly.

2003 - 3C3Z-9D930-AA
2004 - 4C3Z-9D930-AA
2005+ - 5C3Z-9D930-A
 
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Old Aug 12, 2025 | 10:42 AM
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I went with this for my late 04 a short while back.
not the quality of factory, but it works... So far. Don't know if it's same as bostech or not.

https://www.accuratediesel.com/6-0l-...00oRvnUvGqOJo6
 
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Old Aug 12, 2025 | 02:01 PM
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Thats what i was looking for. I was looking for something affordable that worked. The harness you recommended never popped up in my search over the last few days. Just placed my order for that harness. Appreciate it
 
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