OLD PARTS
Genuine Old Parts for Onan, Cummins & Fleetguard Diesel Engines
Find authentic old parts tailored for Onan, Cummins, and Fleetguard power engines. Our collection of genuine replacement components ensures your diesel equipment operates with maximum efficiency and durability.
Old Parts for Reliable Diesel Engine Maintenance
We offer a comprehensive range of authentic old parts, including core engine components, seals, filters, and more—all crafted to meet strict quality standards. Each part is designed to restore and maintain the optimal performance of your diesel engines.
- Genuine Quality: Certified original parts to guarantee compatibility and longevity.
- Wide Selection: Extensive inventory covering key Onan, Cummins, and Fleetguard models.
- Trusted Performance: Enhance engine reliability with parts engineered for power and endurance.
Why Choose Our Old Parts? We provide expert-vetted, genuine parts that ensure your diesel engines run smoother and last longer, backed by our commitment to quality and customer satisfaction.
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ONAN 405792802 POST ENCLOSURE (LH) Original OEM part
ONAN
$374.78$342.36Cummins 405-7928-02 - POST ENCLOSURE (LH) - NO LONGER AVAILABLE MINS405-7928-02 When it comes to finding original replacement parts like the 405-7928-02 - POST ENCLOSURE (LH) - NO LONGER AVAILABLE...$374.78$342.36 -
ONAN 1304586 WATER HEATER BRACKET Original ONAN/CUMMINS OEM part
ONAN
$421.95$385.45Cummins WATER HEATER BRACKET 130-4586 Find the perfect replacement WATER HEATER BRACKET with SKU 130-4586 from the reputable brand Cummins at our store. Crafted with precision and durability in...$421.95$385.45 -
ONAN A040H606 FUSE HOLDER Original ONAN/CUMMINS OEM part
ONAN
$158.65$144.93Engineered Precision for Unwavering Power Integrity Robust fuse holder designed to safeguard your generator’s electrical system with reliable circuit protection Constructed to resist wear and...$158.65$144.93 -
ONAN 4055320 SUPPORT ASSEMBLY Original ONAN/CUMMINS OEM part
ONAN
$264.52$241.64Cummins SUPPORT ASSEMBLY 405-5320 Discover the top-notch SUPPORT ASSEMBLY with SKU 405-5320 from Cummins at our store. Our original parts guarantee a perfect fit and performance for your outdoor...$264.52$241.64 -
ONAN 319550502 LEFT SIDE PANEL TERMINAL Original ONAN/CUMMINS OEM part
ONAN
$441.45$403.26Cummins LEFT SIDE PANEL TERMINAL 319-5505-02 Whether you need to replace a damaged panel terminal or simply looking for an authentic Cummins part, our store offers the genuine LEFT SIDE PANEL...$441.45$403.26 -
ONAN 501292 FUEL LINE SUPPLY Original ONAN/CUMMINS OEM part
ONAN
$509.37$465.31Cummins FUEL LINE SUPPLY 501292 Explore our top-tier FUEL LINE SUPPLY (SKU 501292) by Cummins, crafted with premium quality to ensure optimal performance for your outdoor equipment. Trust in our...$509.37$465.31 -
ONAN A030A412 RECEPTACLE COVER Original ONAN/CUMMINS OEM part
ONAN
$34.97$31.95Cummins RECEPTACLE COVER A030A412 Discover the authentic RECEPTACLE COVER with SKU A030A412 from Cummins, ensuring a perfect fit and top-notch quality for your outdoor equipment. Our store stands...$34.97$31.95 -
ONAN A035R719 ELBOW ADAPTER Original ONAN/CUMMINS OEM part
ONAN
$127.35$116.33Engineered Precision for Seamless Integration Exceptional Durability to Withstand Demanding Conditions Designed specifically to optimize fluid flow and engine efficiency Certified Genuine OEM...$127.35$116.33 -
ONAN 1307344 BELT GUARD Original ONAN/CUMMINS OEM part
ONAN
$305.24$278.84Precision protection engineered for Cummins/Onan excellence Durable design shields belts from debris and damage OEM quality ensures perfect fit and lasting performance Certified genuine ONAN part,...$305.24$278.84 -
ONAN 1042029 CRANKSHAFT BEARING Original ONAN/CUMMINS OEM part
ONAN
$227.79$208.09Engineered Precision for Enduring Power Enhanced Crankshaft Stability for Smooth Performance Maximum Durability Through OEM Quality Assurance Certified Genuine ONAN Part Designed To Meet Exact...$227.79$208.09 -
ONAN 3080084 ROTARY SWITCH Original ONAN/CUMMINS OEM part
ONAN
$374.00$341.65Cummins ROTARY SWITCH 308-0084 Discover the Cummins ROTARY SWITCH at our online store, SKU 308-0084. As an expert in providing original replacement parts for outdoor equipment, we ensure top-quality...$374.00$341.65 -
ONAN 4059473 BULKHEAD ASSEMBLY Original ONAN/CUMMINS OEM part
ONAN
$280.27$256.03Engineered for seamless integration and enduring durability Precision-crafted to uphold system reliability and ease of installation Essential for maintaining electrical integrity in your generator...$280.27$256.03 -
ONAN A028U117 WIRING HARNESS Original ONAN/CUMMINS OEM part
ONAN
$233.03$212.87Cummins WIRING HARNESS A028U117 Need an authentic WIRING HARNESS Look no further than the Cummins A028U117. Designed to precise specifications, this genuine replacement part ensures optimal...$233.03$212.87 -
ONAN 300472135 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$392.04$358.13Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-35 Our store offers the original Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT with...$392.04$358.13 -
ONAN 300472120 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$299.43$273.53Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-20 Discover the genuine Cummins POWER COMMAND CONTROLLER ERASABLE PROGRAMMABLE READ ONLY MEMORY KIT, SKU...$299.43$273.53 -
ONAN 300472112 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$401.77$367.02Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-12 Upgrade your outdoor equipment with the original Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ...$401.77$367.02 -
ONAN 300472101 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$382.39$349.32Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-01 Experience seamless customization with the POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT...$382.39$349.32 -
ONAN 155343602 155343602 MUFFLER KIT Original OEM part
ONAN
$289.80$264.74Engineered for peak performance and reliable exhaust management Advanced noise suppression technology for quieter operation Precision-crafted as a genuine OEM component from ONAN ONAN 155-3436-02...$289.80$264.74 -
ONAN A034Z640 COVER INSULATION Original ONAN/CUMMINS OEM part
ONAN
$133.39$121.86Unmatched thermal protection crafted for your ONAN generator Effectively reduces operational noise and enhances engine efficiency Durable design engineered to extend generator lifespan 100% genuine...$133.39$121.86 -
ONAN 300472140 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$293.32$267.94Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-40 Our online store proudly offers the original "POWER COMMAND CONTROLLER ERASABLE PROGRAMMABLE READ ONLY MEMORY...$293.32$267.94 -
ONAN 300472116 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$403.70$368.78Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-16 Upgrade your equipment with the Cummins POWER COMMAND CONTROLLER ERASABLE PROGRAMMABLE READ ONLY MEMORY KIT...$403.70$368.78 -
ONAN 300472108 POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT Original ONAN/CUMMINS OEM part
ONAN
$337.12$307.96Cummins POWER COMMAND CONTROLLER ERASABLE PROGAMMABLE READ ONLY MEMORY KIT 300-4721-08 Find the original Cummins POWER COMMAND CONTROLLER ERASABLE PROGRAMMABLE READ ONLY MEMORY KIT with SKU...$337.12$307.96 -
ONAN 405902202 ENCLOSURE PANEL Original ONAN/CUMMINS OEM part
ONAN
$459.06$419.35Engineered excellence protecting your power source Robust enclosure panel crafted for durability and precise fit Designed to shield critical components from environmental exposure 100% genuine ONAN...$459.06$419.35 -
ONAN 405987701 DUCT PANEL Original ONAN/CUMMINS OEM part
ONAN
$384.16$350.93Cummins DUCT PANEL 405-9877-01 Find the authentic "DUCT PANEL" with SKU "405-9877-01" from the renowned brand Cummins at our store. Our top-tier quality replacement parts ensure optimal performance...$384.16$350.93 -
ONAN 5410370 EXHAUST FLANGE KIT Original ONAN/CUMMINS OEM part
ONAN
$40.52$37.01Engineered for Excellence, Designed to Endure Precision-fit Exhaust Flange Kit Enhancing Exhaust Flow Efficiency Durable Construction to Resist Heat and Corrosion Over Time Manufactured as a Genuine...$40.52$37.01 -
ONAN 308101401 MODE SELECTOR SWITCH Original ONAN/CUMMINS OEM part
ONAN
$363.57$332.12Cummins MODE SELECTOR SWITCH 308-1014-01 Discover the authentic Cummins MODE SELECTOR SWITCH, SKU 308-1014-01, designed to precision for your outdoor equipment. At our store, we pride ourselves on...$363.57$332.12 -
ONAN 3201899 CIRCUIT BREAKER 35 AMPERES KIT Original ONAN/CUMMINS OEM part
ONAN
$242.46$221.49Precision-crafted safety for your power system. Robust circuit interruption that safeguards your investment. Engineered to meet rigorous Cummins/Onan standards for durability and reliability. 100%...$242.46$221.49 -
ONAN 505212402 PIPE WATER OUTLET FLANGE Original ONAN/CUMMINS OEM part
ONAN
$110.58$101.02Cummins PIPE WATER OUTLET FLANGE 505-2124-02 Find the authentic Cummins PIPE WATER OUTLET FLANGE with SKU 505-2124-02 at our store. Crafted meticulously to match original specifications, this part...$110.58$101.02 -
ONAN 333046901 BATTERY HEATER Original ONAN/CUMMINS OEM part
ONAN
$305.34$278.93Power resilience begins with precision-engineered components. Reliable warm starts even in freezing conditions. Durable construction designed for long-term generator health. Certified OEM quality...$305.34$278.93 -
ONAN 1553523 EXHAUST TUBE Original ONAN/CUMMINS OEM part
ONAN
$244.20$223.08Cummins EXHAUST TUBE 155-3523 Upgrade your outdoor equipment with the genuine Cummins EXHAUST TUBE (SKU: 155-3523). Our store is your ultimate destination for authentic replacement parts. Don't...$244.20$223.08 -
ONAN A029Z523 RADIATOR SEAL Original ONAN/CUMMINS OEM part
ONAN
$94.29$86.14Cummins RADIATOR SEAL A029Z523 Discover the Cummins RADIATOR SEAL (SKU: A029Z523) essential for maintaining your outdoor equipment. At our store, you can trust that you are getting the original...$94.29$86.14 -
ONAN 300483601 HEATER OUTDOOR POWER EQUIPMENT CONTROL ASSEMBLY Original ONAN/CUMMINS OEM part
ONAN
$431.77$394.42Precision engineered for superior outdoor power equipment operation. Optimizes heater control reliability under demanding conditions. Durable design extends system life and reduces downtime...$431.77$394.42 -
ONAN 300528002 FRAME DISPLAY Original ONAN/CUMMINS OEM part
ONAN
$604.83$552.51Cummins FRAME DISPLAY NO LONGER AVAILABLE 300-5280-02 Find the authentic replacement part you need with the FRAME DISPLAY NO LONGER AVAILABLE by Cummins, SKU 300-5280-02. Our store offers genuine...$604.83$552.51 -
ONAN 338482901 RELAY HARNESS Original ONAN/CUMMINS OEM part
ONAN
$119.05$108.75Cummins RELAY HARNESS 338-4829-01 Explore our store for the original "RELAY HARNESS" by Cummins with SKU "338-4829-01." Ensure smooth operation of your outdoor equipment with this genuine part. With...$119.05$108.75 -
ONAN A034C806 140140 5 IN DIAMETER 10 X 10 ELBOW Original ONAN/CUMMINS OEM part
ONAN
$86.23$78.77Engineered Excellence Meets Reliable Durability Precision 5-inch diameter elbow for optimized exhaust flow and reduced backpressure Robust construction designed for long-lasting resistance to heat...$86.23$78.77 -
ONAN 302205734 CURRENT TRANSFORMER Original ONAN/CUMMINS OEM part
ONAN
$321.96$294.11Cummins CURRENT TRANSFORMER 302-2057-34 Find genuine replacement parts like the "CURRENT TRANSFORMER" SKU: "302-2057-34" from the trusted brand Cummins in our store. Ensure your equipment operates...$321.96$294.11 -
ONAN A034T908 DIPSTICK TUBE Original ONAN/CUMMINS OEM part
ONAN
$94.73$86.53Engineered for dependable performance and seamless integration within ONAN generator systems Designed to provide accurate and easy oil level measurement for engine health monitoring Manufactured as...$94.73$86.53 -
ONAN A030J319 COPPER BUSBAR Original ONAN/CUMMINS OEM part
ONAN
$96.47$88.13Engineered to empower your generator’s heartbeat. Exceptional conductivity for consistent, efficient power distribution. Superior resistance to wear, ensuring longevity in demanding environments...$96.47$88.13 -
ONAN 1856075 PISTON RING ASSEMBLY Original ONAN/CUMMINS OEM part
ONAN
$316.79$289.39Cummins PISTON RING ASSEMBLY 185-6075 Find the perfect fit for your engine with the Cummins PISTON RING ASSEMBLY (SKU: 185-6075), ensuring optimal performance and durability. Trust the Cummins brand...$316.79$289.39 -
ONAN 4161243 BATTERY CABLE Original ONAN/CUMMINS OEM part
ONAN
$138.20$126.25Dependable power connection crafted for lasting performance Designed to withstand demanding conditions and ensure seamless conductivity Original equipment manufacturer quality from ONAN guaranteeing...$138.20$126.25