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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ONAN 45015167 EXCITER PM EXT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$35.59$32.52Power your generator with confidence using precision-engineered OEM components. Designed for seamless integration and peak exciter performance. Robust construction to withstand demanding operational...$35.59$32.52 -
CUMMINS 4399854 WIRING HARNESS Original OEM part
CUMMINS
$739.08$675.15Precision engineered wiring unlocking the full potential of your Cummins generator system. Durable construction guarantees consistent electrical performance in demanding environments. Designed for...$739.08$675.15 -
CUMMINS 4399796 WIRING HARNESS Original OEM part
CUMMINS
$459.70$419.94Precision-crafted for seamless power delivery and system integrity Durable design engineered to withstand demanding environments Genuine OEM CUMMINS part guaranteeing exact fit and...$459.70$419.94 -
CUMMINS 4399793 WIRING HARNESS Original OEM part
CUMMINS
$252.83$230.96Power your system with engineering excellence—trust Cummins precision every step of the way. Designed to provide flawless electrical connectivity for seamless engine operation. Built to withstand...$252.83$230.96 -
CUMMINS 4394103 WIRING HARNESS Original OEM part
CUMMINS
$761.05$695.22Precision-engineered connectivity for your Cummins power system Durable construction ensures long-lasting electrical integrity Optimized for seamless fit and peak generator performance 100% Genuine...$761.05$695.22 -
CUMMINS 4393920 WIRING HARNESS Original OEM part
CUMMINS
$882.35$806.03Engineered Precision Meets Enduring Reliability Optimized wiring conductivity for peak system integrity Durable construction designed for harsh operational environments Guaranteed genuine OEM...$882.35$806.03 -
CUMMINS 4388878 WIRING HARNESS Original OEM part
CUMMINS
$82.18$75.07Precision engineered to empower your Cummins system with unwavering reliability Robust design ensures flawless electrical connections under all conditions Enhances system efficiency by maintaining...$82.18$75.07 -
CUMMINS 4387962 WIRING HARNESS Original OEM part
CUMMINS
$437.72$399.85Cummins 4387962 - WIRING HARNESS MINS4387962 Find the authentic 4387962 - WIRING HARNESS by Cummins, SKU "MINS4387962," at our store. Rest assured of its quality and compatibility with your outdoor...$437.72$399.85 -
CUMMINS 4387960 WIRING HARNESS Original OEM part
CUMMINS
$462.40$422.41Precision-engineered for unmatched power system integrity Robust construction delivering superior electrical connectivity Fully compatible with Cummins systems for flawless integration Guaranteed...$462.40$422.41 -
CUMMINS 4387959 WIRING HARNESS Original OEM part
CUMMINS
$921.00$841.34Engineered to connect with precision for flawless communication between your engine's control systems. Robust design ensures long-lasting durability even under harsh operating conditions. Strictly...$921.00$841.34 -
CUMMINS 4387958 WIRING HARNESS Original OEM part
CUMMINS
$979.46$894.74Engineered to Empower Your Power System Robust Design for Unmatched Durability Precision-fit Wiring Harness to Ensure Seamless Engine Communication Authentic OEM part directly from Cummins...$979.46$894.74 -
CUMMINS 4387956 WIRING HARNESS Original OEM part
CUMMINS
$422.49$385.95Precision engineered for unwavering connection stability Robust construction to endure demanding engine environments Guaranteed genuine OEM Cummins quality and compatibility Trust in CUMMINS...$422.49$385.95 -
CUMMINS 4387955 WIRING HARNESS Original OEM part
CUMMINS
$292.43$267.13Cummins 4387955 - WIRING HARNESS MINS4387955 Get the authentic Cummins 4387955 - WIRING HARNESS, SKU MINS4387955, exclusively at our store. Engineered with precision, this wiring harness ensures...$292.43$267.13 -
CUMMINS 4387954 WIRING HARNESS Original OEM part
CUMMINS
$294.06$268.62Precision connectivity that powers every Cummins engine with trusted reliability. Designed to ensure optimal electrical performance under the toughest conditions. Robust construction safeguards your...$294.06$268.62 -
CUMMINS 4379878 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$3,201.25$2,924.34Precision-engineered integration for reliable control signals Designed to endure rigorous operating conditions and extend system life Authentic Cummins OEM part ensuring full compatibility and...$3,201.25$2,924.34 -
CUMMINS 4377414 WIRING HARNESS Original OEM part
CUMMINS
$294.59$269.11Engineered precision for reliable power connections that stand the test of time. Robust design ensures flawless electrical signal transmission under demanding conditions. Durable, factory-tested...$294.59$269.11 -
CUMMINS 4377413 WIRING HARNESS Original OEM part
CUMMINS
$300.41$274.42Engineered for Precision and Reliability: Seamlessly connect your power system components with the CUMMINS 4377413 Wiring Harness, designed to meet exacting Cummins standards. Durable Construction...$300.41$274.42 -
CUMMINS 4377412 WIRING HARNESS Original OEM part
CUMMINS
$281.68$257.32Engineered to deliver unwavering electrical connectivity under all operating conditions Designed to maintain optimal signal integrity for enhanced engine control and diagnostics Guaranteed OEM...$281.68$257.32 -
CUMMINS 4377411 WIRING HARNESS Original OEM part
CUMMINS
$276.70$252.77Engineered for Precision: Seamlessly integrate premium connectivity within your Cummins power system. Durability You Can Trust: Constructed to withstand harsh conditions and reduce electrical faults...$276.70$252.77 -
CUMMINS 4377410 WIRING HARNESS Original OEM part
CUMMINS
$306.93$280.38Unmatched precision for your power system's backbone Engineered for flawless signal transmission and secure connections Designed to withstand harsh environments ensuring consistent reliability 100%...$306.93$280.38 -
CUMMINS 4377409 WIRING HARNESS Original OEM part
CUMMINS
$273.64$249.97Cummins 4377409 - WIRING HARNESS MINS4377409 Find the authentic 4377409 - WIRING HARNESS by Cummins at our store, ensuring top quality compatibility for your outdoor equipment. This original...$273.64$249.97 -
CUMMINS 4377408 WIRING HARNESS Original OEM part
CUMMINS
$299.78$273.85Engineered for Seamless Power Integration Durable construction ensures consistent electrical flow and reduces downtime Precision manufactured as a genuine OEM component by Cummins, assuring optimal...$299.78$273.85 -
CUMMINS 4377407 WIRING HARNESS Original OEM part
CUMMINS
$295.58$270.02Designed to ensure seamless electrical connectivity with uncompromised durability Precision-engineered to optimize system efficiency and support engine health Manufactured as a genuine Cummins OEM...$295.58$270.02 -
CUMMINS 4377406 WIRING HARNESS Original OEM part
CUMMINS
$431.68$394.34Engineered for Excellence: Experience seamless integration with your Cummins power system. Durability You Can Trust: Built to withstand demanding environments and ensure long-lasting functionality...$431.68$394.34 -
CUMMINS 4377405 WIRING HARNESS Original OEM part
CUMMINS
$393.94$359.86Precision-crafted for enduring performance in every connection. Designed to optimize electrical integrity for your Cummins engine system. Genuine OEM part ensuring compatibility and maintaining your...$393.94$359.86 -
CUMMINS 4377404 WIRING HARNESS Original OEM part
CUMMINS
$394.29$360.19Precision-crafted connectivity for uninterrupted power Robust design ensuring optimal signal transmission OEM certified to guarantee perfect fit and performance Experience the Heartbeat of Cummins...$394.29$360.19 -
CUMMINS 4377403 WIRING HARNESS Original OEM part
CUMMINS
$501.97$458.55Experience seamless power connectivity with Cummins precision engineering. Robust construction for long-lasting electrical integrity under demanding conditions. Designed to ensure perfect...$501.97$458.55 -
CUMMINS 4377402 WIRING HARNESS Original OEM part
CUMMINS
$447.33$408.63Cummins 4377402 - WIRING HARNESS MINS4377402 Find the original "4377402 - WIRING HARNESS" from Cummins at our store. Designed for optimal performance, this wiring harness ensures compatibility and...$447.33$408.63 -
CUMMINS 4377401 WIRING HARNESS Original OEM part
CUMMINS
$368.77$336.87Precision-engineered for seamless integration and consistent power delivery Durable construction to withstand harsh operating conditions and extend engine life 100% genuine OEM Cummins component for...$368.77$336.87 -
CUMMINS 4377400 WIRING HARNESS Original OEM part
CUMMINS
$348.60$318.45Cummins 4377400 - WIRING HARNESS MINS4377400 Find the original "4377400 - WIRING HARNESS" by Cummins at our store. Expertly crafted to ensure seamless integration with your outdoor equipment, this...$348.60$318.45 -
CUMMINS 4377399 WIRING HARNESS Original OEM part
CUMMINS
$452.83$413.66Precision engineered connectivity to power every mission Robust construction ensures long-term electrical integrity Designed specifically to meet Cummins’ rigorous quality standards 100% Genuine OEM...$452.83$413.66 -
CUMMINS 4374330 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$2,598.10$2,373.37Engineered precision fueling uninterrupted power delivery Durable wiring harness designed for optimal signal transmission Highly reliable module integration ensuring efficient control system...$2,598.10$2,373.37 -
CUMMINS 4374080 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$5,786.26$5,285.75Engineered for precision and seamless system communication. Durable construction ensures long-lasting reliability in demanding conditions. Genuine OEM component designed specifically for full...$5,786.26$5,285.75 -
CUMMINS 4374079 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$2,474.45$2,260.41Engineered for flawless integration and enduring performance Enhances communication and control within your Cummins power system Durable construction resists harsh environments and keeps your system...$2,474.45$2,260.41 -
CUMMINS 4373992 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$2,183.73$1,994.84Cummins 4373992 - EXTERNAL CONTROL MODULE WIRING HARNESS MINS4373992 When it comes to ensuring the functionality of your outdoor equipment, selecting the right parts is crucial. The Cummins 4373992...$2,183.73$1,994.84 -
CUMMINS 4373989 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$2,368.50$2,163.63Precision engineered for uncompromising power system excellence Robust wiring harness delivering seamless connectivity for your control module Durable construction ensuring resilience under...$2,368.50$2,163.63 -
CUMMINS 4371631 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$8,990.19$8,212.54Engineered for precision and durability in every connection Ensures streamlined communication between control modules Provides robust protection against electrical interference and wear 100% genuine...$8,990.19$8,212.54 -
CUMMINS 4368387 WIRING HARNESS Original OEM part
CUMMINS
$8,633.85$7,887.02Precision engineered to empower your Cummins system's heart and soul. Reliable electrical connectivity ensures seamless engine communication. Durable design withstands harsh operating environments...$8,633.85$7,887.02 -
CUMMINS 4362724 EXTERNAL CONTROL MODULE WIRING HARNESS Original OEM part
CUMMINS
$4,291.69$3,920.46Precision engineered to ensure seamless connectivity and system integrity Designed to maintain peak engine control and minimize downtime Durable OEM construction for guaranteed long-term...$4,291.69$3,920.46 -
CUMMINS 4352672 WIRING HARNESS Original OEM part
CUMMINS
$534.88$488.62Cummins 4352672 - WIRING HARNESS MINS4352672 Upgrade your outdoor equipment with the genuine Cummins 4352672 - WIRING HARNESS (SKU MINS4352672). Our store offers top-quality original replacement...$534.88$488.62