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 A040K250 ACCESSORY HARNESS Original ONAN/CUMMINS OEM part
ONAN
$273.30$249.66Designed for seamless integration: Engineered to enhance your Onan generator’s accessory connectivity with uncompromising precision. Durable and reliable construction: Crafted to withstand demanding...$273.30$249.66 -
ONAN 3383428 ENGINE OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$308.42$281.74Engineered for enduring excellence and perfect integration Maximizes power system connectivity and stability Designed to withstand outdoor conditions for lasting durability Official ONAN OEM...$308.42$281.74 -
ONAN A030N228 ENGINE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$281.98$257.59Experience unmatched reliability crafted for precision. Optimized wiring design ensuring flawless engine connectivity. Robust construction built to withstand demanding generator environments. 100%...$281.98$257.59 -
ONAN 3382887 PRINTED CIRCUIT BOARD #1 OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$167.22$152.75Cummins PRINTED CIRCUIT BOARD #1 OUTDOOR POWER EQUIPMENT HARNESS 338-2887 In need of a reliable PRINTED CIRCUIT BOARD #1 OUTDOOR POWER EQUIPMENT HARNESS Look no further than our store for the...$167.22$152.75 -
ONAN 1660844 IGNITION OUTDOOR POWER EQUIPMENT HARNESS ASSEMBLY Original ONAN/CUMMINS OEM part
ONAN
$197.55$180.46Cummins IGNITION OUTDOOR POWER EQUIPMENT HARNESS ASSEMBLY 166-0844 Get your hands on the genuine Cummins IGNITION OUTDOOR POWER EQUIPMENT HARNESS ASSEMBLY with SKU 166-0844 only from our store. Our...$197.55$180.46 -
ONAN 3385093 HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$364.63$333.09Precision engineered for unmatched reliability in every connection. Designed to maintain optimal heater circuit functionality under demanding conditions. Constructed with high-grade materials to...$364.63$333.09 -
ONAN 3383228 INTERFACE OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$324.02$295.99Cummins INTERFACE OUTDOOR POWER EQUIPMENT HARNESS 338-3228 Find the perfect fit for your outdoor equipment with the original INTERFACE OUTDOOR POWER EQUIPMENT HARNESS by Cummins (SKU: 338-3228)...$324.02$295.99 -
ONAN 3385169 CURRENT TRANSFORMER PT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$267.00$243.91Engineered to uphold ONAN's legacy of unmatched reliability and performance. Precision-crafted to deliver accurate current sensing and maintain system safety. Durable construction ensures long-term...$267.00$243.91 -
ONAN 338499502 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$329.12$300.65Performance you can trust with every start Designed to deliver reliable, consistent engine heating Durability engineered to withstand demanding conditions 100% Genuine ONAN OEM component for...$329.12$300.65 -
ONAN 338499508 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$329.08$300.62Power Your Engine’s Vital Warm-Up with Precision and OEM Assurance Designed for optimal heat delivery to maintain efficient cold starts Durable construction engineered to withstand harsh operating...$329.08$300.62 -
ONAN 3384986 HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$329.92$301.38Trust in every connection that powers your generator’s warmth. Durable construction delivers consistent heater operation under all conditions. Optimized design ensures perfect fitment and electrical...$329.92$301.38 -
ONAN 338417603 BATTERY HARNESS Original ONAN/CUMMINS OEM part
ONAN
$171.95$157.08Precision-crafted connectivity for your power system Durable, corrosion-resistant wiring ensures consistent battery performance Designed exclusively by ONAN for seamless integration Genuine OEM part...$171.95$157.08 -
ONAN 3383577 BATTERY OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$172.58$157.65Engineered for endurance: the ONAN 338-3577 harness delivers unwavering power connection. Optimized compatibility: specifically designed to maintain efficient battery operation and safeguard power...$172.58$157.65 -
ONAN 3384732 INTERFACE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$229.40$209.56Cummins INTERFACE HARNESS 338-4732 Find the genuine Cummins 338-4732 INTERFACE HARNESS at our online store for top-notch quality and compatibility. Trust in our inventory for authentic parts that...$229.40$209.56 -
ONAN 338376302 LCL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$333.46$304.62Cummins LCL HARNESS 338-3763-02 Discover the authentic "LCL HARNESS" by Cummins, SKU 338-3763-02, at our store. Ensure perfect compatibility and peak performance for your outdoor equipment with this...$333.46$304.62 -
ONAN A029U302 INTERFACE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$215.93$197.25Cummins INTERFACE HARNESS A029U302 Find the genuine "INTERFACE HARNESS" by Cummins with SKU A029U302 on our store. Our selection of original replacement parts ensures top-notch quality. With fast...$215.93$197.25 -
ONAN 3383581 CONTROL OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$245.98$224.71Engineered for dependable power system integration Durable construction supports long-term generator efficiency Authentic OEM part designed specifically by ONAN ONAN 338-3581 CONTROL OUTDOOR POWER...$245.98$224.71 -
ONAN 338499509 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$350.19$319.90Precision crafted for dependable power delivery and peace of mind. Ensures fast and efficient engine warm-up even in harsh climates. Premium insulation and rugged connectors for lasting performance...$350.19$319.90 -
ONAN 338333501 WATER HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$264.76$241.86Cummins WATER HEATER HARNESS 338-3335-01 Efficiently power your WATER HEATER with the authentic 338-3335-01 replacement HARNESS by Cummins. Our store guarantees top-quality originals, ensuring...$264.76$241.86 -
ONAN 3382238 25 IN REMOTE PANEL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$402.38$367.58Unleash the full potential of your ONAN power system with precision-engineered connectivity Durable design to withstand demanding electrical environments Reliable signal transmission for flawless...$402.38$367.58 -
ONAN 3384731 INTERFACE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$205.60$187.82Cummins INTERFACE HARNESS 338-4731 Find the genuine Cummins INTERFACE HARNESS with SKU 338-4731 at our online store. Our selection of original replacement parts ensures high performance and...$205.60$187.82 -
ONAN 3382803 ENGINE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$170.78$156.01Engineered Precision for Unmatched Reliability Seamless Electrical Connectivity Optimizes Engine Performance Designed to withstand demanding conditions for extended service life 100% Genuine OEM...$170.78$156.01 -
ONAN 3382909 AC OUTPUT OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$158.04$144.37Power your system with precision and confidence Engineered for superior electrical connection and durability Designed to withstand outdoor elements and heavy-duty use Authentic OEM component from...$158.04$144.37 -
ONAN 338499501 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$287.17$262.33Engineered for flawless integration with your ONAN generator system Enhances cold-weather start-up reliability by maintaining optimal engine temperature Durable wiring harness built to withstand...$287.17$262.33 -
ONAN 3383479 PRINTED CIRCUIT BOARD ONAN Genuine OEM Part
ONAN
$158.49$144.78The ONAN 338-3479 is a printed circuit board made from high-quality materials ensuring OEM condition. This part controls electronic functions vital for the proper operation of the tool. ...$158.49$144.78 -
ONAN 338499511 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$302.70$276.52Empower your generator's cold starts with precision-engineered components Designed to provide reliable heat delivery for optimal engine warm-up Durable construction ensures long service life under...$302.70$276.52 -
ONAN 3383384 ENGINE HEATER OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$269.05$245.78Reliability that powers your peace of mind—engineered for uncompromising performance. Ensures optimal engine temperature for smooth startups even in cold conditions. Durable construction built...$269.05$245.78 -
ONAN A040X290 ALARM HARNESS Original ONAN/CUMMINS OEM part
ONAN
$311.30$284.38Precision-crafted for dependable performance under every condition Engineered to ensure clear, timely alarm signals for your generator's safety Built by ONAN as a Genuine OEM part ensuring flawless...$311.30$284.38 -
ONAN 3385016 CONTROL PANEL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$279.90$255.69Engineered for seamless integration and sustained generator performance Precision-crafted connector harness to maintain control panel integrity Durable construction designed for long-lasting service...$279.90$255.69 -
ONAN 3382354 REMOTE PANEL OUTDOOR POWER EQUIPMENT HARNESS Original ONAN/CUMMINS OEM part
ONAN
$112.42$102.69Cummins REMOTE PANEL OUTDOOR POWER EQUIPMENT HARNESS 338-2354 Upgrade your outdoor power equipment with the original Cummins REMOTE PANEL OUTDOOR POWER EQUIPMENT HARNESS (SKU: 338-2354). Trust in...$112.42$102.69 -
ONAN A032Y881 LOWER COOLANT LEVEL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$302.07$275.94Cummins LOWER COOLANT LEVEL HARNESS A032Y881 Our store is your go-to destination for original LOWER COOLANT LEVEL HARNESS A032Y881 by Cummins. Crafted with precision and quality to ensure optimal...$302.07$275.94 -
ONAN A040K240 INTERFACE HARNESS Original ONAN/CUMMINS OEM part
ONAN
$230.20$210.29Cummins INTERFACE HARNESS A040K240 Upgrade your outdoor equipment with the original INTERFACE HARNESS from Cummins. Our store offers the A040K240 model, ensuring a perfect fit and top-notch...$230.20$210.29 -
ONAN 3383598 REMOTE PANEL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$137.49$125.60Cummins REMOTE PANEL HARNESS 338-3598 Find reliable OEM Remote Panel Harness 338-3598 from Cummins at our online store. Crafted with precision, this part guarantees a perfect fit and optimal...$137.49$125.60 -
ONAN 3382277 VERT DC HARNESS Original ONAN/CUMMINS OEM part
ONAN
$168.32$153.76Cummins VERT DC HARNESS 338-2277 Explore the premium quality VERT DC HARNESS by Cummins, SKU 338-2277, at our online store. We solely offer authentic replacement parts to ensure optimal performance...$168.32$153.76 -
ONAN 338338304 CONTROL HARNESS Original ONAN/CUMMINS OEM part
ONAN
$127.53$116.50Dependable connectivity starts here: ensure your generator’s heart beats strong with every connection. Precision engineered wiring harness for flawless signal transmission Durable construction...$127.53$116.50 -
ONAN 3385376 AC HARNESS Original ONAN/CUMMINS OEM part
ONAN
$255.74$233.62Engineered for excellence, built to endure. Precisely designed AC harness ensures stable and safe electrical connections in your Onan generator. Constructed with high-quality materials for...$255.74$233.62 -
ONAN 338499503 ENGINE HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$280.30$256.06Precision power, unwavering reliability — engineered for your peace of mind Reliable engine heating ensures smooth startups even in the coldest environments Durable harness construction engineered...$280.30$256.06 -
ONAN 338333508 WATER HEATER HARNESS Original ONAN/CUMMINS OEM part
ONAN
$201.80$184.35Cummins WATER HEATER HARNESS 338-3335-08 Discover the genuine Cummins WATER HEATER HARNESS, SKU 338-3335-08, exclusively available at our online store. Crafted to perfection, this harness ensures...$201.80$184.35 -
ONAN 3383550 OUTDOOR POWER EQUIPMENT HARNESS GENSET Original ONAN/CUMMINS OEM part
ONAN
$129.09$117.93Cummins OUTDOOR POWER EQUIPMENT HARNESS GENSET 338-3550 The Cummins 338-3550 harness genset is the ideal replacement part for your outdoor power equipment. With our store, you can trust that you are...$129.09$117.93 -
ONAN 3384358 BATTERY HARNESS Original ONAN/CUMMINS OEM part
ONAN
$170.64$155.88Dependable Power Connectivity for Your Generator’s Heartbeat Durable, corrosion-resistant construction ensures stable electrical flow under all conditions Precision engineering guarantees full...$170.64$155.88