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Gledewen

Engine Wiring Harness 6.0 L, Compatible with 2003 2004 Ford F250 F350 F450 F550 Super Duty Diesel Engine, 3C3Z-12B637-BA, 3C3Z12B637BA, Build Date of 1/30/03 Thru 9/29/03 Only, Standalone Wire Harness

  • Based on 28 reviews
Condition: New
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Availability: Only 2 left in stock, order soon!
Fulfilled by Amazon
Arrives Aug 29 – Sep 10
Order within 22 hours and 58 minutes
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Model: 3C3Z-12B637-BA


Features

  • OEM DESIGNThe engine wire harness is manufactured by an ISO-certified manufacturer, and meets the functions and specifications of the original manufacturer. Connect the interior parts of car effectively, to make your installation easier with no confusion.
  • Premium QualityOur diesel engine wiring harness can ensure the rapid transmission and supply of car power. The engine wire harness kit is made of high-quality copper core wires, which has lower eccentricity and resistance, anti-corrosion, wear-resistant, non-deformation, well performed in conducting electricity.
  • Fits for2003 2004 Ford F-250, F-350, F-450, F-550 Super Duty with the 6.0L Diesel Engine with BUILD DATE of 1/30/03 thru 9/29/03 ONLY. Replace OE Part Number# 3C3Z-12B637-BA, 3C3Z12B637BA. The wrapped plastic surfaces can stand high temperatures, all kinds of chemical reagent, strong impact, and press.
  • Complete AccessoriesIt is a brand new OEM Ford Parts engine wiring harness assembly with all connectors. Professional installation is recommended (No Instruction Included). Complete with new glow plug and intake heater relays. Integrated power wire and charge harness inspected and upgraded several times, which ensures the strength of wire harness and efficient transmission, to make your drive performance excellent. Good reinforced ring terminals, they are completely plug and play.

Description

Packing List:1x Engine Wiring Harness 6.0L DieselCondition: NewCompatible with:2003 2004 Ford F250 Super Duty with 6.0L Diesel Engine Wiring Harness2003 2004 Ford F350 Super Duty with 6.0L Diesel Engine Wiring Harness2003 2004 Ford F450 Super Duty with 6.0L Diesel Engine Wiring Harness2003 2004 Ford F550 Super Duty with 6.0L Diesel Engine Wiring HarnessPrecise Fit Part Numbers:3C3Z-12B637-BA, 3C3Z12B637BAHow To Install/Repair Wiring Harness?Step 1:Labelling the wires connections using the masking tapes. This step will help you make the installation very quickly, significantly if the wires’ colors are faded away.Step 2:Disconnect and remove the car battery from the vehicle using a socket wrench.Step 3:Disconnect the primary connection of the engine body wire harness.Step 4:Take a jack, jack up the vehicle, and disconnected all the wires from under the car.Step 5:Install the new engine wiring harness. While installing new wiring, ensure that the wires route away from the hot exhaust pipes and other engine parts. Once you are done, reconnect the battery to the vehicle, and you are good to go.If you are not sure this item will fit your vehicle, please email us your car photo or provide your vehicle's YEAR, MAKE, MODEL and ENGINE SIZE before you purchase this item.

Brand: Gledewen


Material: Plastic


Number of Items: 1


Manufacturer: Gledewen


Unit Count: 1.0 Count


Brand Name: Gledewen


Manufacturer: Gledewen


Part Number: GW-XS08-001


Model: 3C3Z-12B637-BA


Unit Count: 1.0 Count


Included Components: Engine Wiring Harness


Material Type: Plastic


Cable Type: automotive wiring harness


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Aug 29 – Sep 10

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews

    • Good parts
Model: 3C3Z-12B637-BA
Good service and good parts 👍🏻
Reviewed in the United States on May 4, 2026 by Marvin prado
    • 2004.5 and newer
Model: 3C3Z-12B637-BA
Only for 2004.5 and newer. This won’t affect many people but it’s important to know for those searching for the old style this isn’t it. But you can relocate the HPOP pressure sensor with three wires and six heat shrink butt connectors and it works perfectly.
Reviewed in the United States on March 26, 2026 by Adam s.
    • Actual fit for 2003-2004 with icp on hpop housing
Model: 3C3Z-12B637-BA
This harness does work. It actually does fit the engines it says it does. The FICM plug is good tight fit. So far it's working great
Reviewed in the United States on December 12, 2025 by Amazon Customer
    • Worked Great
Model: 3C3Z-12B637-BA
It worked well. Each plug also fits well on a 2003 F350 6.0. Work great for the price.
Reviewed in the United States on March 19, 2026 by Wilmarie class
    • Good so far
Model: 3C3Z-12B637-BA
All the connections are just like the factory. I’ve had it on for a month so far and has been great!
Reviewed in the United States on February 16, 2026 by Benjamin
    • it fixed the problem
Model: 3C3Z-12B637-BA
fit my 2003 F250 6.0 powerstroke motor, everything was there and fit in the truck. The only reason it did not get 5 starts was a few of the leads where almost to short and the FICM plugs where at a bad angle and I had to cut the tape on them to get them plugged in.
Reviewed in the United States on January 30, 2025 by Casey Cloud
    • It's not factory, but worth the price.
Model: 3C3Z-12B637-BA
Worth the cost...
Reviewed in the United States on April 25, 2025 by Robert D.
    • Fast shipping
Model: 3C3Z-12B637-BA
Good quality
Reviewed in the United States on October 23, 2024 by Arroyomotogp

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