Wire Harnesses

Genuine Wire Harnesses for Diesel Engines by Onan, Cummins & Fleetguard

Upgrade your diesel engine's electrical system with our premium wire harnesses, designed specifically for Onan, Cummins, and Fleetguard power engines. Our genuine wire harnesses ensure seamless connectivity and durability, critical for maintaining engine efficiency and safety.

Wire Harnesses & Electrical Wiring Solutions for Reliable Power Engines

Our catalog features expertly crafted wiring harnesses, complete wire assemblies, and connector kits that meet rigorous OEM standards. Whether you need replacement parts or upgrades, our wire harnesses guarantee robust performance under demanding conditions.

  • OEM Quality: Authentic parts engineered to fit perfectly with Onan, Cummins, and Fleetguard diesel engines.
  • Durability: Resistant to heat, vibration, and corrosion for long-lasting service life.
  • Enhanced Engine Performance: Ensures optimal electrical flow, reducing downtime and maintenance costs.

Why Choose Our Wire Harnesses? We provide genuine, brand-specific wire harnesses that combine expert craftsmanship with reliable performance, ensuring your diesel engines operate efficiently and safely every time.

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  • CUMMINS 3866768 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3866768 WIRING HARNESS Original OEM part

    CUMMINS

    $6,021.33
    $5,500.48
    Precision engineered wiring for dependable power delivery Ensures optimal signal integrity and engine performance Manufactured as a 100% genuine OEM Cummins component CUMMINS 3866768 WIRING...
    $6,021.33
    $5,500.48
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    Qty in Cart: 0
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    Price:
    $6,021.33
    $5,500.48
    Subtotal:
  • CUMMINS 3865108 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3865108 WIRING HARNESS Original OEM part

    CUMMINS

    $248.37
    $226.89
    Engineered to connect your power system flawlessly Constructed with durable materials for lasting service life Precisely designed to optimize signal integrity and reduce failure risks 100% OEM...
    $248.37
    $226.89
    Add to Cart
    Qty in Cart: 0
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    $248.37
    $226.89
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  • CUMMINS 3824774 - ELECTRICAL WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3824774 ELECTRICAL WIRING HARNESS Original OEM part

    CUMMINS

    $313.93
    $286.77
    Engineered for uncompromising connectivity and durability. Designed to ensure seamless electrical flow and system stability. 100% genuine OEM Cummins part guaranteeing perfect compatibility...
    $313.93
    $286.77
    Add to Cart
    Qty in Cart: 0
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    Price:
    $313.93
    $286.77
    Subtotal:
  • CUMMINS 3697624 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3697624 WIRING HARNESS Original OEM part

    CUMMINS

    $74.60
    $68.15
    Precision engineered for enduring performance Robust construction to ensure reliable electrical connectivity Designed exclusively as an OEM part by Cummins for optimal compatibility CUMMINS 3697624...
    $74.60
    $68.15
    Add to Cart
    Qty in Cart: 0
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    Price:
    $74.60
    $68.15
    Subtotal:
  • CUMMINS 3697623 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3697623 WIRING HARNESS Original OEM part

    CUMMINS

    $156.82
    $143.25
    Unrivaled reliability engineered for enduring power Precision-crafted wiring harness for flawless connectivity Designed for optimal system integration 100% genuine OEM component from Cummins,...
    $156.82
    $143.25
    Add to Cart
    Qty in Cart: 0
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    Price:
    $156.82
    $143.25
    Subtotal:
  • CUMMINS 3697622 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3697622 WIRING HARNESS Original OEM part

    CUMMINS

    $66.67
    $60.90
    Engineered for unmatched reliability and ease of integration Designed to maintain optimal electrical connectivity and engine communication Rigorously tested OEM Cummins component ensuring...
    $66.67
    $60.90
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $66.67
    $60.90
    Subtotal:
  • CUMMINS 3692794 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3692794 WIRING HARNESS Original OEM part

    CUMMINS

    $155.99
    $142.50
    Experience flawless connectivity engineered for ultimate power delivery Reliable construction ensures long-lasting performance under demanding conditions 100% Genuine OEM Cummins component crafted...
    $155.99
    $142.50
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $155.99
    $142.50
    Subtotal:
  • CUMMINS 3692107 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3692107 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $1,098.70
    $1,003.67
    Precision-engineered for lasting dependability in every connection Seamlessly supports control module communication to optimize performance Durable construction ensures resistance to wear and...
    $1,098.70
    $1,003.67
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,098.70
    $1,003.67
    Subtotal:
  • CUMMINS 3691753 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3691753 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $1,137.62
    $1,039.21
    Seamless power system integration with Cummins precision engineering Durable wiring harness designed to maintain flawless communication with your external control module Optimized for long-term...
    $1,137.62
    $1,039.21
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,137.62
    $1,039.21
    Subtotal:
  • CUMMINS 3690453 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3690453 WIRING HARNESS Original OEM part

    CUMMINS

    $605.03
    $552.69
    Engineered for precision, built for endurance—experience the hallmark of Cummins quality. Seamless electrical integration: guarantees stable signal transmission for superior engine control. Robust...
    $605.03
    $552.69
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $605.03
    $552.69
    Subtotal:
  • CUMMINS 3689543 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3689543 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $1,870.92
    $1,709.08
    Cummins 3689543 - EXTERNAL CONTROL MODULE WIRING HARNESS MINS3689543 Find top-quality original 3689543 - EXTERNAL CONTROL MODULE WIRING HARNESS by Cummins at our store. Our online shop is the best...
    $1,870.92
    $1,709.08
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,870.92
    $1,709.08
    Subtotal:
  • CUMMINS 3688219 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3688219 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $1,454.34
    $1,328.54
    Precision engineered for seamless integration Optimizes signal transmission for superior engine management Robust construction for long-lasting durability Guaranteed genuine Cummins OEM component...
    $1,454.34
    $1,328.54
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $1,454.34
    $1,328.54
    Subtotal:
  • CUMMINS 3687693 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3687693 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $2,440.14
    $2,229.07
    Precision engineered for seamless system integration Durable wiring harness ensuring consistent signal transmission Designed exclusively as a Cummins OEM component for guaranteed...
    $2,440.14
    $2,229.07
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $2,440.14
    $2,229.07
    Subtotal:
  • CUMMINS 3687692 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3687692 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $2,440.14
    $2,229.07
    Engineered for seamless integration with your Cummins power system, ensuring robust communication and control. Durable wiring harness designed to withstand demanding environments and maintain...
    $2,440.14
    $2,229.07
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $2,440.14
    $2,229.07
    Subtotal:
  • CUMMINS 3686380 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3686380 WIRING HARNESS Original OEM part

    CUMMINS

    $422.27
    $385.75
    Precision engineered for flawless connectivity and dependable power delivery. Robust design ensures enduring performance even under demanding conditions. Seamlessly supports the operational...
    $422.27
    $385.75
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $422.27
    $385.75
    Subtotal:
  • CUMMINS 3686370 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3686370 WIRING HARNESS Original OEM part

    CUMMINS

    $416.98
    $380.91
    Precision engineered for unmatched system harmony Robust design ensures reliable electrical connectivity under all conditions Durable construction minimizes risk of failure during critical...
    $416.98
    $380.91
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $416.98
    $380.91
    Subtotal:
  • CUMMINS 3684513 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3684513 WIRING HARNESS Original OEM part

    CUMMINS

    $137.18
    $125.32
    Precision engineered connectivity for dependable power flow Designed to withstand harsh operating conditions for long service life Authentic Cummins OEM component guaranteeing perfect fit and...
    $137.18
    $125.32
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $137.18
    $125.32
    Subtotal:
  • CUMMINS 3683086 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3683086 WIRING HARNESS Original OEM part

    CUMMINS

    $111.19
    $101.58
    Engineered excellence for uninterrupted power—trust the genuine path. Precision-crafted wiring harness tailored to exact Cummins specifications. Ensures optimal electrical connection and system...
    $111.19
    $101.58
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $111.19
    $101.58
    Subtotal:
  • CUMMINS 3682579 - WIRING HARNESS - Original OEM part - Image 1
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    CUMMINS 3682579 WIRING HARNESS Original OEM part

    CUMMINS

    $260.74
    $238.18
    Precision-crafted for enduring power connection excellence Ensures flawless electrical communication within your Cummins engine system Exceptional resistance to heat, vibration, and environmental...
    $260.74
    $238.18
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $260.74
    $238.18
    Subtotal:
  • CUMMINS 3681433 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3681433 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $3,942.54
    $3,601.51
    Engineered Precision, Enduring Performance Robust external control module wiring harness designed for flawless signal transmission Ensures optimal engine control and communication stability in...
    $3,942.54
    $3,601.51
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3,942.54
    $3,601.51
    Subtotal:
  • CUMMINS 3658860 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3658860 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $4,074.18
    $3,721.77
    Engineered to empower your system with uncompromising precision and durability Designed for seamless communication between your control module and engine components Robust wiring harness offering...
    $4,074.18
    $3,721.77
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $4,074.18
    $3,721.77
    Subtotal:
  • CUMMINS 3658821 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3658821 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $485.76
    $443.74
    Precision engineered for uncompromising reliability Durable construction designed to withstand demanding power system environments Ensures seamless communication between engine controls and external...
    $485.76
    $443.74
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $485.76
    $443.74
    Subtotal:
  • CUMMINS 3658790 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3658790 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $6,581.90
    $6,012.57
    Precision-engineered wiring harness for seamless power control integration Durable construction designed to withstand rigorous operational demands Ensures flawless communication between control...
    $6,581.90
    $6,012.57
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6,581.90
    $6,012.57
    Subtotal:
  • CUMMINS 3658788 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3658788 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $7,630.09
    $6,970.09
    Precision engineered for seamless integration and unwavering reliability Ensures optimal electrical communication for effective control system operation Designed to withstand demanding environmental...
    $7,630.09
    $6,970.09
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7,630.09
    $6,970.09
    Subtotal:
  • CUMMINS 3658785 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3658785 WIRING HARNESS Original OEM part

    CUMMINS

    $2,553.83
    $2,332.92
    Precision engineering for flawless electrical connection in your Cummins system Durable design delivers consistent conductivity and resistance to wear Optimized for perfect compatibility with...
    $2,553.83
    $2,332.92
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $2,553.83
    $2,332.92
    Subtotal:
  • CUMMINS 3649899 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3649899 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $11,616.92
    $10,612.05
    Precision engineered wiring for dependable external control Ensures optimal communication between control module and generator systems Genuine Cummins OEM part guarantees perfect fit and...
    $11,616.92
    $10,612.05
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $11,616.92
    $10,612.05
    Subtotal:
  • CUMMINS 3648464 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648464 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $3,010.24
    $2,749.85
    Precision engineered for uncompromising power control Durable wiring harness designed to optimize electrical connections Seamless integration with Cummins power modules ensuring peak system...
    $3,010.24
    $2,749.85
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3,010.24
    $2,749.85
    Subtotal:
  • CUMMINS 3648150 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648150 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $7,306.12
    $6,674.14
    Engineered for seamless control and unmatched dependability Precise wiring harness design ensures optimal signal transmission and system responsiveness Durable construction resists wear for extended...
    $7,306.12
    $6,674.14
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $7,306.12
    $6,674.14
    Subtotal:
  • CUMMINS 3648149 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648149 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $4,860.13
    $4,439.73
    Precision Engineered for Seamless Integration Durable Wiring Harness Ensuring Long-lasting Performance Compatibility and Quality Guaranteed with Genuine Cummins OEM Standards Unlock the True Power...
    $4,860.13
    $4,439.73
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $4,860.13
    $4,439.73
    Subtotal:
  • CUMMINS 3648148 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648148 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $5,890.54
    $5,381.01
    Engineered for flawless integration and superior dependability Precision-crafted wiring harness enhancing system communication Robust design to endure demanding operational environments 100% genuine...
    $5,890.54
    $5,381.01
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5,890.54
    $5,381.01
    Subtotal:
  • CUMMINS 3648147 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3648147 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $4,184.42
    $3,822.46
    Precision engineered to keep your Cummins system running flawlessly Ensures optimal signal transmission and system control Robust design for enduring performance in demanding environments 100%...
    $4,184.42
    $3,822.46
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $4,184.42
    $3,822.46
    Subtotal:
  • CUMMINS 3647638 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3647638 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $14,160.80
    $12,935.90
    Precision in every connection: engineered to maintain Cummins' exacting standards. Reliable signal transmission that guarantees stable external control system operation. Designed for optimal...
    $14,160.80
    $12,935.90
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14,160.80
    $12,935.90
    Subtotal:
  • CUMMINS 3646915 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3646915 WIRING HARNESS Original OEM part

    CUMMINS

    $5,597.90
    $5,113.69
    Engineered Precision for Unwavering Power Delivery Durable Construction Optimized for Harsh Environments Seamless Compatibility with Cummins Engine Systems Guaranteed Genuine OEM to Preserve...
    $5,597.90
    $5,113.69
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5,597.90
    $5,113.69
    Subtotal:
  • CUMMINS 3646914 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3646914 WIRING HARNESS Original OEM part

    CUMMINS

    $6,198.69
    $5,662.51
    Precision Power Connectivity for Unmatched Performance Robust construction ensures consistent electrical transmission under demanding conditions Designed to optimize engine control and system...
    $6,198.69
    $5,662.51
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $6,198.69
    $5,662.51
    Subtotal:
  • CUMMINS 3646911 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3646911 WIRING HARNESS Original OEM part

    CUMMINS

    $5,187.70
    $4,738.97
    Depend on precision-crafted connectivity for unmatched power delivery Engineered for flawless fit and enduring durability Designed to maintain system efficiency and safety under heavy loads 100%...
    $5,187.70
    $4,738.97
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $5,187.70
    $4,738.97
    Subtotal:
  • CUMMINS 3645548 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3645548 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $14,529.75
    $13,272.93
    Precision-engineered wiring for peak Cummins power system control Robust design ensures long-lasting durability under demanding conditions Streamlines communication between control modules for...
    $14,529.75
    $13,272.93
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $14,529.75
    $13,272.93
    Subtotal:
  • CUMMINS 3645032 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3645032 WIRING HARNESS Original OEM part

    CUMMINS

    $755.22
    $689.89
    Experience unmatched reliability with authentic Cummins craftsmanship Precisely engineered wiring harness for seamless electrical integration Designed to uphold engine performance and safeguard...
    $755.22
    $689.89
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $755.22
    $689.89
    Subtotal:
  • CUMMINS 3644838 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3644838 WIRING HARNESS Original OEM part

    CUMMINS

    $983.64
    $898.55
    Engineered for Excellence: Delivering precision connectivity for your Cummins system. Robust Construction: Designed to withstand harsh conditions for extended longevity. Seamless Integration:...
    $983.64
    $898.55
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $983.64
    $898.55
    Subtotal:
  • CUMMINS 3644384 - WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3644384 WIRING HARNESS Original OEM part

    CUMMINS

    $499.16
    $455.98
    Precision-engineered wiring harness for optimal power system communication Durable construction resists wear and environmental stress 100% genuine Cummins OEM ensuring exact fit and peak...
    $499.16
    $455.98
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $499.16
    $455.98
    Subtotal:
  • CUMMINS 3643872 - EXTERNAL CONTROL MODULE WIRING HARNESS - Original OEM part - Image 1
    Add to Cart

    CUMMINS 3643872 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part

    CUMMINS

    $3,010.10
    $2,749.73
    Precision performance engineered to power your Cummins system flawlessly Robust wiring harness designed to maintain signal integrity and operational reliability Direct OEM component guaranteeing...
    $3,010.10
    $2,749.73
    Add to Cart
    Qty in Cart: 0
    Quantity:
    Price:
    $3,010.10
    $2,749.73
    Subtotal:
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