Engine Wiring Harness for 6.0L Powerstroke 2003-2007 Ford F250

EGR Performance Engine Wiring Harness 6.0L Powerstroke F350 2007

2003-2007 Ford 6.0L Powerstroke Engine Wiring Harness (4C3Z-12B637-AA)

Premium Engine Wiring Harness for Ford F250 F350 6.0L 2003-2007

EGR Performance Direct Replacement Wiring Harness 6.0L Powerstroke 2003-2007

Engines Wiring Harness for 6.0L Powerstroke Ford F250 F350 (2003-2007) Replace 4C3Z-12B637-AA

$164.59

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100 in stock, ready to ship

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Details

Engine Wiring Harness for 6.0L Powerstroke 2003-2007 Ford F250 F350 – Manufactured by EGR Performance, this direct replacement harness (replacing 4C3Z-12B637-AA) features high-quality materials for reliable performance.

Shipping Details

Ontario CA / Springdale OH / Newark NJ

Package List

Delivery Time

2-5 working days inland in the United States

Product details

Product Overview

The EGR Performance Engine Wiring Harness is a direct replacement for 2003-2007 Ford 6.0L Powerstroke models, including F-250/F-350/F-450/F-550 Super Duty and Excursion. Key highlights:

Replaces OEM part numbers: 4C3Z-12B637-AA, 4C3Z12B637AA, 4C3Z*12B637*AA
Crafted with premium insulating material, nylon braided layer, and stable connectors
Delivers superior moisture resistance and flexibility for harsh operating conditions
Restores reliable electrical communication between engine components

Ideal for resolving wiring failures, corrosion issues, or damaged harnesses in 6.0L Powerstroke trucks, this kit ensures consistent performance for daily driving, heavy-duty work, or off-road use.

Ideal For

This Engine Wiring Harness is perfect for owners of 2003-2007 Ford 6.0L Powerstroke models who:

Need to replace a damaged, corroded, or malfunctioning OEM wiring harness
Own F-250/F-350/F-450/F-550 Super Duty or Excursion with 6.0L Powerstroke engine
Require a direct replacement for part number 4C3Z-12B637-AA
Seek a high-quality harness with moisture resistance and flexibility
Use their truck for heavy-duty applications (hauling, towing) or off-road adventures
Want reliable electrical performance backed by a 1-year warranty

Core Advantages

Premium Material & Durability

High-Quality Construction: Made with durable insulating material, nylon braided layer, and stable connectors – built to exceed OEM standards
Superior Moisture Resistance: Protects against moisture, dust, and debris, preventing corrosion and electrical failures in harsh environments
Enhanced Flexibility: Nylon braided layer ensures flexibility, making installation easier and reducing stress on connections during engine operation

Direct OEM Replacement & Perfect Fit

Exact OEM Match: Designed to replace part numbers 4C3Z-12B637-AA, 4C3Z12B637AA, 4C3Z*12B637*AA – no modifications needed for installation
Model-Specific Fitment: Precisely engineered for 2003-2007 6.0L Powerstroke F-250/F-350/F-450/F-550 Super Duty and Excursion, ensuring seamless integration with engine components

Reliable Electrical Performance

Stable Connections: High-quality connectors ensure consistent electrical communication between engine sensors, actuators, and control modules
Restores Functionality: Resolves issues caused by worn or damaged wiring (e.g., misfires, poor fuel economy, electrical shorts)

Trusted Brand & Warranty

1-Year Warranty: Backed by EGR Performance’s 1-year warranty, covering manufacturing defects and quality issues
Dedicated Support: Access to professional customer service via service@egrperformance.com for fitment or installation guidance

Technical Specifications

Brand: EGR Performance
Product Name: Engine Wiring Harness
Replacement Part Numbers: 4C3Z-12B637-AA, 4C3Z12B637AA, 4C3Z*12B637*AA
Material: Premium insulating material, nylon braided layer, stable connectors
Key Features: Moisture resistance, flexibility, direct OEM replacement
Warranty: 1-Year Warranty from EGR Performance
Installation Instructions: Not Included (support via service@egrperformance.com)

Why Choose This EGR Performance Engine Wiring Harness?

For 2003-2007 Ford 6.0L Powerstroke owners, this wiring harness stands out as the top replacement choice – here’s why:

Precision Fit for Your Truck: Exclusively engineered for 2003-2007 F-250/F-350/F-450/F-550 Super Duty and Excursion 6.0L Powerstroke, eliminating fitment guesswork
Durable Build for Demanding Use: Premium materials and moisture resistance make it ideal for heavy-duty work, off-road use, and harsh weather conditions – built to last
Direct OEM Replacement: No cutting, splicing, or modifications needed – matches the original harness’s design for easy installation
Proven Part Number Compatibility: Guaranteed to replace 4C3Z-12B637-AA and related part numbers, ensuring you get the right part the first time
Trusted Warranty & Support: EGR Performance’s 1-year warranty and responsive customer service provide peace of mind for your investment
Restores Full Electrical Functionality: Fixes common wiring issues in 6.0L Powerstroke trucks, improving engine performance and reliability

Complete Package Contents

Included:

1 x EGR Performance Engine Wiring Harness

Not Included:

Installation instructions (support available at service@egrperformance.com)
Additional hardware or connectors (uses existing OEM mounting points)

Compatibility List

Compatible Vehicles:

2003 Ford F-250 Super Duty 6.0L Powerstroke
2003 Ford F-350 Super Duty 6.0L Powerstroke
2003 Ford F-450 Super Duty 6.0L Powerstroke
2003 Ford F-550 Super Duty 6.0L Powerstroke
2003 Ford Excursion 6.0L Powerstroke
2004 Ford F-250 Super Duty 6.0L Powerstroke
2004 Ford F-350 Super Duty 6.0L Powerstroke
2004 Ford F-450 Super Duty 6.0L Powerstroke
2004 Ford F-550 Super Duty 6.0L Powerstroke
2004 Ford Excursion 6.0L Powerstroke
2005 Ford F-250 Super Duty 6.0L Powerstroke
2005 Ford F-350 Super Duty 6.0L Powerstroke
2005 Ford F-450 Super Duty 6.0L Powerstroke
2005 Ford F-550 Super Duty 6.0L Powerstroke
2005 Ford Excursion 6.0L Powerstroke
2006 Ford F-250 Super Duty 6.0L Powerstroke
2006 Ford F-350 Super Duty 6.0L Powerstroke
2006 Ford F-450 Super Duty 6.0L Powerstroke
2006 Ford F-550 Super Duty 6.0L Powerstroke
2006 Ford Excursion 6.0L Powerstroke
2007 Ford F-250 Super Duty 6.0L Powerstroke
2007 Ford F-350 Super Duty 6.0L Powerstroke
2007 Ford F-450 Super Duty 6.0L Powerstroke
2007 Ford F-550 Super Duty 6.0L Powerstroke
2007 Ford Excursion 6.0L Powerstroke

Non-Compatible Vehicles:

Ford models outside 2003-2007
Non-6.0L Powerstroke engine configurations
Ford trucks not listed in the compatible vehicles section (e.g., F-150, Ranger)

Dispatch Time: Orders will be shipped within 24 hours after successful payment.
Delivery Time: 2-5 business days after dispatch (delivery speed depends on proximity to warehouse location).
Return Window:7 days for unsatisfactory items45 days for quality-related issues
Refund Processing: Refunds will be processed back to your original payment method within 2-4 business days after receiving the automated refund confirmation email (subject to bank verification).

Does this wiring harness fit 2003-2007 Ford F-250 Super Duty 6.0L Powerstroke?

Yes. This EGR Performance Engine Wiring Harness is specifically designed for 2003-2007 Ford F-250 Super Duty models with the 6.0L Powerstroke engine. It’s a direct replacement for OEM part number 4C3Z-12B637-AA, ensuring perfect fit and functionality.

Can this harness replace part number 4C3Z12B637AA?

Absolutely. This wiring harness is fully compatible with and replaces multiple OEM part numbers: 4C3Z-12B637-AA, 4C3Z12B637AA, and 4C3Z*12B637*AA. It matches the original part’s specifications for seamless replacement.

Is this harness compatible with 2007 Ford Excursion 6.0L Powerstroke?

Yes. This kit is compatible with 2003-2007 Ford Excursion models equipped with the 6.0L Powerstroke engine. Refer to the compatibility table or list for full details on all supported vehicles.

Does this wiring harness require modifications for installation?

No. This is a direct OEM replacement harness. It’s designed to fit exactly like the original, using existing mounting points and connectors – no cutting, splicing, or modifications are needed. Note: Installation instructions are not included, but our team can provide guidance via service@egrperformance.com.

What materials is this engine wiring harness made of?

This harness is crafted with premium insulating material, a nylon braided layer, and stable connectors. These materials deliver superior moisture resistance, flexibility, and durability, making it suitable for harsh operating conditions (e.g., heavy rain, off-road dust, extreme temperatures).

Will this harness fix electrical issues in my 6.0L Powerstroke truck?

Yes. This harness is designed to resolve common electrical issues caused by worn, corroded, or damaged OEM wiring – including misfires, poor fuel economy, electrical shorts, and intermittent sensor failures. It restores reliable electrical communication between engine components.

What is covered by the 1-Year Warranty from EGR Performance?

The 1-Year Warranty covers manufacturing defects and quality issues for the 6.0L Powerstroke Engine Wiring Harness. It ensures the harness meets EGR Performance’s premium standards for fitment, durability, and functionality. The warranty does NOT cover damage from improper installation, misuse, accidental damage, or normal wear and tear. For warranty claims, contact service@egrperformance.com.

Is this harness suitable for heavy-duty use (towing/hauling)?

Yes. The premium materials (nylon braided layer, moisture-resistant insulation) and stable connectors make this harness ideal for heavy-duty applications like towing and hauling. It’s built to withstand the increased vibration and stress associated with heavy-duty truck use.

Does the package include any additional hardware?

No. The package includes only 1 x EGR Performance Engine Wiring Harness. No additional hardware or connectors are needed – the harness uses your truck’s existing OEM hardware for installation.

Is this harness compatible with 2003-2007 Ford F-550 Super Duty 6.0L Powerstroke?

Yes. This wiring harness is fully compatible with 2003-2007 Ford F-550 Super Duty models equipped with the 6.0L Powerstroke engine. It’s a direct replacement for the OEM harness (4C3Z-12B637-AA) in these heavy-duty trucks.

Can I install this harness myself, or do I need a professional?

While no modifications are needed, installing an engine wiring harness requires basic mechanical knowledge and tools. DIY enthusiasts with experience working on diesel engines can complete the installation. If you’re unsure, we recommend consulting a professional diesel mechanic. Our customer service team can provide installation guidance via service@egrperformance.com.

Warranty & Support

All EGR Performance Engine Wiring Harnesses for 2003-2007 Ford 6.0L Powerstroke come with a 1-Year Warranty covering manufacturing defects and quality issues. Please note: This product does NOT include installation instructions. For installation guidance, product support, warranty claims, or compatibility questions, contact our customer service team at service@egrperformance.com.