OTTO S3L2 Diesel Engine Engine Assembly for Excavator Diesel Engine Heavy Machinery Complete Engine Assembly Component
Ensure stable and efficient power output for your heavy machinery with the OTTO S3L2 Diesel Engine Assembly, a complete and reliable diesel engine designed for excavators and various heavy equipment. This fully assembled engine unit offers strong power, low fuel consumption, and excellent durability to meet long‑hour, heavy‑duty working conditions.
Technical Specifications
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Product Name
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S3L2 Diesel Engine Complete Assembly
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Part Number
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OTTO S3L2
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Engine Type
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Direct Injection Diesel Engine
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Structure
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Inline 3‑Cylinder, Water‑Cooled, Four‑Stroke
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Application
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Excavator, Generator, Small Construction Machinery
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Component Type
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Complete Engine Assembly
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Material
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High‑Strength Cast Iron, Forged Steel Components
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Function
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Provide stable power for heavy machinery operation
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Performance
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High Torque, Low Noise, Low Fuel Consumption, Strong Reliability
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Cooling System
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Water‑Cooled
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Lubrication Method
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Pressure Splash Combined Lubrication
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Condition
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New Complete Aftermarket Engine Assembly
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Installation
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Direct OEM Fit, Ready for Installation
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Features
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Complete Assembly, Easy Installation, Long Service Life, Low Maintenance
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Key Product Advantages
Complete & Ready‑to‑Install Assembly:
The OTTO S3L2 Diesel Engine is supplied as a full engine assembly, including all necessary subcomponents, allowing direct installation without additional assembly or matching, greatly saving repair time.
Stable Power & High Efficiency:
With optimized combustion chamber and fuel supply system, the S3L2 engine provides stable torque output, low fuel consumption, and smooth operation, ideal for continuous excavator and heavy machinery work.
Heavy‑Duty & Long‑Life Design:
Built with high‑strength cast iron block, forged crankshaft, and wear‑resistant internal parts, this engine features strong durability, anti‑fatigue performance, and extended service life under harsh conditions.
Applications
Applicable Machine: This OTTO S3L2 Diesel Engine Complete Assembly is mainly used for excavators, mini‑excavators, generating sets, and other small‑to‑medium heavy machinery that requires the S3L2 diesel engine as standard power.
Applicable Model: Excavators and heavy machinery matching the S3L2 diesel engine configuration
About Otto
Guangzhou Otto Engineering Machinery Equipment Co.,Ltd, is a leading manufacturer and distributor of earthmoving parts and equipment in Guangzhou, China. It consists of 3 sister companies, serving many well-known distributors at home and abroad. With more than 20 years of production and distribution experience, OTTO has cultivated an experienced engineer team and a professional sales team, which can ensure the highest service with the highest quality, competitive price and prompt delivery. At the same time, it also supplies parts to the Chinese market, and many Chinese trading companies order from our company.
Come with us, the best service, the best price, the best supplier you can enjoy !
Our Advantages
1.TECHNICAL SERVICE
We provide modification technology service, the product has been tested modifed, the engine can be directly installed and used.
2.CERTIFICATE
With Export certificate License.Double confirmation before shipping, if we sent the wroncparts we will send corect one.
3.SERVICE TEAM
With professional after-sale team, will help you to trace the goods. And our engineers will assist with any installation issues.
4.TECHNICAL SERVICE
Free Sample is acceptable.We serves manywell-known Hitachi Komatsu Caterpillar Kobelco in your country.

Access our comprehensive Excavator Parts Book covering 50,000+ validated OEM references for Komatsu, CAT, Hitachi, Volvo, and Doosan machinery – cross-search by part number (e.g., Komatsu 111-10-11310), machine model (CAT 320D/EX200-5), or component type (hydraulic pumps, track links, engine rebuild kits) with real-time 3D diagram support. Engineered for zero-mismatch fitment across critical assemblies including Isuzu 6BG1T/Cummins QSB6.7 power systems, ISO-certified undercarriages, and Komatsu HMB-series hydraulic valves, all backed by 24/7 technical interpretation and downloadable PDF catalogs with MOQ/pricing.
At OTTO, we specialize in excavator machinery parts with a global clientele. Our superior products have garnered acclaim worldwide for their quality, durability, and precision engineering. Customers praise our extensive range of parts, from travel reduction gearboxes to hydraulic components, ensuring optimal performance. With a commitment to excellence, we offer top-notch warranties, secure shipping options, and efficient delivery times. Join our satisfied customers worldwide who rely on OTTO for top-tier excavator parts and exceptional service.
FAQ
Q1:What can you buy from us?
A:We are professional dealer in excavator parts, such as desel engine assy,hydraulic pump, hydraulic control valvetravel
motor,diesel fuel system,gearbox parts, swing gearbox motor parts, electrical parts, engine parts, used
excavator,etc.
Q2:How long is the warranted time?
A:For natural broken,Warranty 3-12 months any quality problem will offer support freely.
Q3:What's the shipping way you can offer?
A:(1) Big order: By sea or by air.(It can reduce the costs).
(2) Small order:DHL,TNT,UPS,FEDEX,EMS,ARAMEX.
Q4:What's the terms of the transaction?
A:EXW,FCA,FAS,FOB, C&F,CIF,CPT,CIP,DAF,DES,DDP.
Q5:How about the lead time?
A:(1) ln stock: 1-3 days.Always in 24 hours.
(2) Out of stock: lt's according to your quantity, and we have cooperated with factory,We will let you know when we quote.