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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CUMMINS 3871802 ARMATURE ASSEMBLY Original OEM part
CUMMINS
$1,982.02$1,810.57Cummins 3871802 - ARMATURE ASSEMBLY MINS3871802 Get your outdoor equipment up and running smoothly with the 3871802 - ARMATURE ASSEMBLY by Cummins, SKU MINS3871802. Trust in our store for original...$1,982.02$1,810.57 -
CUMMINS 3871665 HEX JAM NUT Original OEM part
CUMMINS
$47.26$43.17Precision-engineered fastening solution for superior locking strength. Designed to resist loosening under vibration, ensuring operational stability. Manufactured as a genuine OEM part by Cummins for...$47.26$43.17 -
CUMMINS 3871631 TAB SET SLAVE LASH Original OEM part
CUMMINS
$25.15$22.97Engineered for Excellence, Designed for Reliability Precision-fit tab set ensuring perfect lash adjustment Durable construction to sustain rigorous engine demands 100% Genuine OEM Cummins part for...$25.15$22.97 -
CUMMINS 3871624 D/L ASSEMBLY 455 B 24 VOLT DC Original OEM part
CUMMINS
$3,745.30$3,421.34Precision engineered for enduring reliability and optimal engine performance Robust construction ensures seamless integration within Cummins power systems Maintains compliance with safety and...$3,745.30$3,421.34 -
CUMMINS 3871597 SPACER PTS 404BG Original OEM part
CUMMINS
$60.93$55.66Precision engineered for seamless integration: maintain your power system’s integrity and performance with this essential spacer component. Durability under demanding conditions: designed to...$60.93$55.66 -
CUMMINS 3871596 404BG PART GROUP HOUSING Original OEM part
CUMMINS
$574.33$524.65Precision-engineered to sustain your Cummins legacy of reliability Robust construction for enduring strength under demanding conditions Optimized fit guaranteeing full compatibility with Cummins...$574.33$524.65 -
CUMMINS 3871576 HOUSING ASSEMBLY Original OEM part
CUMMINS
$4,004.30$3,657.93Reliability engineered by Cummins, trusted by professionals worldwide. Robust housing assembly designed to maintain optimal engine performance under demanding conditions. Precision-manufactured for...$4,004.30$3,657.93 -
CUMMINS 3871564 PACK 450A 12VDC HOUSING Original OEM part
CUMMINS
$4,064.29$3,712.73Precision engineered for uncompromising power and durability Robust 450A 12VDC housing designed to withstand demanding operational conditions Ensures optimal compatibility and system efficiency for...$4,064.29$3,712.73 -
CUMMINS 3871446 RING RETAINING Original OEM part
CUMMINS
$16.11$14.71Cummins 3871446 - RING RETAINING MINS3871446 Discover the authentic 3871446 - RING RETAINING by Cummins, expertly crafted for superior performance. When seeking reliable replacement parts, our store...$16.11$14.71 -
CUMMINS 3871413 SPACER STUD Original OEM part
CUMMINS
$1,444.74$1,319.77Precision-engineered for uncompromising fit and performance Durable construction ensures lasting engine stability Certified OEM part directly from Cummins for maximum reliability Essential for...$1,444.74$1,319.77 -
CUMMINS 3871380 FINISHED SPACER Original OEM part
CUMMINS
$2,032.33$1,856.53Precision-Engineered for Lasting Performance Ensures optimal alignment and durability in Cummins power systems Crafted to meet stringent Cummins OEM standards for seamless fit and...$2,032.33$1,856.53 -
CUMMINS 3871363 SPRING Original OEM part
CUMMINS
$17.80$16.27Engineered to endure, designed to perform Precision-crafted spring ensuring sustained engine stability Reliable operation under demanding conditions for enhanced power system efficiency 100% genuine...$17.80$16.27 -
CUMMINS 3871246 PISTON SLAVE Original OEM part
CUMMINS
$299.65$273.73Engineered to deliver uncompromising reliability under demanding conditions Precision-crafted to ensure optimal engine health and seamless performance Manufactured by Cummins for assured OEM quality...$299.65$273.73 -
CUMMINS 3870952 DECAL Original OEM part
CUMMINS
$19.75$18.04Experience precision branding that reflects Cummins' heritage of excellence Durable materials designed to withstand harsh operating environments Easy application ensures seamless integration with...$19.75$18.04 -
CUMMINS 3870882 TILT SWITCH Original OEM part
CUMMINS
$370.27$338.24Cummins 3870882 - TILT SWITCH MINS3870882 Discover the authentic 3870882 - TILT SWITCH by Cummins, SKU "MINS3870882", at our store. Our commitment to quality ensures that you receive original...$370.27$338.24 -
CUMMINS 3870869 SELF TAPPING METAL SCREW Original OEM part
CUMMINS
$22.96$20.97Precision engineered fastening for uncompromised reliability Optimized design ensures secure and lasting engagement in metal assemblies Corrosion-resistant coating for extended service...$22.96$20.97 -
CUMMINS 3870857 MALE UNION ELBOW Original OEM part
CUMMINS
$395.63$361.41Engineered Precision for Enduring Performance Reliable Connection Ensuring Leak-Free Operations Durable OEM Quality Backed by Cummins Expertise Guaranteed Compatibility with Your Cummins Power...$395.63$361.41 -
CUMMINS 3866767 WIRING HARNESS Original OEM part
CUMMINS
$5,328.20$4,867.32Empower your power system with precision-engineered connectivity. Seamless and robust wiring for optimal engine communication. Durable materials designed to withstand demanding environments. 100%...$5,328.20$4,867.32 -
CUMMINS 3866731 MARINE GEAR SUPPORT Original OEM part
CUMMINS
$450.88$411.88Engineered for unwavering marine power integrity. Precision-crafted to maintain optimal gear alignment. Robust construction designed to withstand harsh maritime conditions. Certified OEM Cummins...$450.88$411.88 -
CUMMINS 3866711 BELT GUARD Original OEM part
CUMMINS
$3,007.07$2,746.96Cummins 3866711 - BELT GUARD MINS3866711 Explore the high-quality 3866711 - BELT GUARD from Cummins available at our store. With a focus on providing authentic replacement parts, we ensure that you...$3,007.07$2,746.96 -
CUMMINS 3866053 CAM ASSEMBLY Original OEM part
CUMMINS
$542.78$495.83Engineered for precision, built to last. Ensures synchronized valve timing for optimal engine performance. Constructed with high-grade materials to withstand demanding operational conditions...$542.78$495.83 -
CUMMINS 3866052 WATER PUMP IMPELLER Original OEM part
CUMMINS
$881.22$804.99Precision engineered for dependable cooling efficiency Durable design optimizes engine temperature regulation 100% authentic Cummins OEM part ensuring perfect fitment and performance CUMMINS...$881.22$804.99 -
CUMMINS 3864333 SPEED SENSOR Original OEM part
CUMMINS
$796.70$727.79Experience unmatched precision engineered for Cummins power systems Exceptional durability ensures consistent, accurate speed detection Enhances your generator’s operational reliability and...$796.70$727.79 -
CUMMINS 3864269 SENSOR BRACKET Original OEM part
CUMMINS
$12.10$11.06Trust in the heartbeat of your engine’s precision — the CUMMINS 3864269 SENSOR BRACKET guarantees stability where it matters most. Engineered for exact fit and flawless sensor alignment, ensuring...$12.10$11.06 -
CUMMINS 3864217 HOSE CLAMP Original OEM part
CUMMINS
$20.20$18.46Precision-engineered for dependability and peak engine integrity Ensures a leak-proof connection to maintain system efficiency Constructed from premium materials to withstand harsh operating...$20.20$18.46 -
CUMMINS 3864148 CORROSION RESISTOR CARTRIDGE Original OEM part
CUMMINS
$147.36$134.61Engineered to safeguard your generator’s integrity with precision and reliability Advanced corrosion resistance technology ensuring extended component lifespan Designed for seamless compatibility...$147.36$134.61 -
CUMMINS 3864079 MOUNTING SPACER Original OEM part
CUMMINS
$42.75$39.05Engineered for enduring strength and seamless integration Precision-crafted mounting spacer ensuring optimal alignment and vibration reduction Durable composition designed to withstand rigorous...$42.75$39.05 -
CUMMINS 3863490 COVER PLATE Original OEM part
CUMMINS
$104.85$95.78Precision engineered to uphold Cummins' legacy of power and dependability Robust construction ensures long-lasting protection and optimal system integrity Designed for seamless compatibility to...$104.85$95.78 -
CUMMINS 3863391 TUBE CLAMP Original OEM part
CUMMINS
$45.76$41.80Precision-engineered reliability for your Cummins power system Robust clamp design ensures secure tube fastening under demanding conditions Resists vibration and wear, prolonging engine component...$45.76$41.80 -
CUMMINS 3863324 HEX FLANGE HEAD CAPSCREW Original OEM part
CUMMINS
$63.22$57.75Precision-engineered fastening solution to secure critical engine components Robust hex flange head design ensures superior grip and vibration resistance Manufactured as an original equipment part...$63.22$57.75 -
CUMMINS 3863223 OIL SUCTION CONNECTION Original OEM part
CUMMINS
$488.80$446.52Cummins 3863223 - OIL SUCTION CONNECTION MINS3863223 Find the genuine 3863223 - OIL SUCTION CONNECTION by Cummins at our store, the ultimate destination for top-quality replacement parts. Engineered...$488.80$446.52 -
CUMMINS 3825849 DECAL Original OEM part
CUMMINS
$39.58$36.16Cummins 3825849 DECAL MINS3825849 Look no further for the original Cummins 3825849 DECAL. Even though it is elsewhere, our store still carries it. Don't miss your chance to purchase this authentic...$39.58$36.16 -
CUMMINS 3825165 INJECTOR TESTER Original OEM part
CUMMINS
$461.43$421.51Cummins 3825165 - INJECTOR TESTER MINS3825165 Discover the authentic quality of the Cummins 3825165 - INJECTOR TESTER, SKU MINS3825165, exclusively available at our online store. Engineered to...$461.43$421.51 -
CUMMINS 3824427 INSTALLER ADAPTER Original OEM part
CUMMINS
$1,601.63$1,463.09Power your equipment with precision-engineered parts designed for unwavering performance Seamless installation with the CUMMINS 3824427 INSTALLER ADAPTER for enhanced system compatibility Durability...$1,601.63$1,463.09 -
CUMMINS 3824426 INSTALLER ADAPTER Original OEM part
CUMMINS
$934.74$853.88Precision-crafted for seamless integration in your Cummins power system Robust design ensuring long-lasting service under demanding conditions Optimizes engine alignment for improved operational...$934.74$853.88 -
CUMMINS 3823861 CYLINDER HEAD BOLT TORQUE Original OEM part
CUMMINS
$49.34$45.07Cummins 3823861 - CYLINDER HEAD BOLT TORQUE - NO LONGER AVAILABLE MINS3823861 Obtain genuine quality with the Cummins 3823861 - CYLINDER HEAD BOLT TORQUE - NO LONGER AVAILABLE at our store. Crafted...$49.34$45.07 -
CUMMINS 3823745 ASSY COOLANT PRESS FIX Original OEM part
CUMMINS
$2,718.70$2,483.54Cummins 3823745 - ASSY COOLANT PRESS FIX - NO LONGER AVAILABLE MINS3823745 Discover the original 3823745 - ASSY COOLANT PRESS FIX - NO LONGER AVAILABLE by Cummins at our store. Although this product...$2,718.70$2,483.54 -
CUMMINS 3823646 SPACER Original OEM part
CUMMINS
$861.64$787.11Cummins 3823646 - SPACER MINS3823646 Discover the genuine 3823646 - SPACER by Cummins, designed to fit perfectly in your outdoor equipment. Our store is your ultimate destination for authentic...$861.64$787.11 -
CUMMINS 3823597 AIR COMPRESSION BASE MOUNTING PLATE Original OEM part
CUMMINS
$715.76$653.85Engineered for uncompromised durability and precision fit Supports optimal air compression system stability and efficiency Manufactured exclusively as an original equipment manufacturer (OEM)...$715.76$653.85 -
CUMMINS 3823353 PORTAMATIC CONVERSION LPF KIT Original OEM part
CUMMINS
$3,075.88$2,809.82Cummins 3823353 - PORTA-MATIC CONVERSION LPF KIT MINS3823353 Upgrade your equipment with the original 3823353 - PORTA-MATIC CONVERSION LPF KIT by Cummins. Our store ensures top-notch quality and...$3,075.88$2,809.82