Excavator Hydraulic Parts,Excavator Engine Parts Manufacturer

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With our unique hydraulic technology and control systems, we provide customers with the best productivity and optimum quality.

OTTO-Hydraulic Parts
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OTTO-Engine Parts
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OTTO-Diesel Engine Assembly
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OTTO-Hydraulic Parts

OTTO Travel Device Assy EX210LC Excavator Hydraulic Parts Hitachi EX210LC Complete Final Drive Gearbox Assembly

OTTO Travel Device Assy EX210LC for the Hitachi EX210LC excavator - supplied as a complete travel device, ready to fit. It sits at the end of the track frame and takes the drive from the travel motor - the reduction gears turn the motor speed down into the slow, high torque drive that pulls the track sprocket. It is supplied as a complete assembly, so the old unit is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Hydraulic Pump HPV118 Excavator Hydraulic Parts Hitachi ZX280-5LC Excavator Main Hydraulic Pump Complete Assembly

OTTO Hydraulic Pump HPV118 for the Hitachi ZX280-5LC excavator (HPV118) - supplied as a complete hydraulic pump, ready to fit. It is the variable displacement piston pump that feeds the whole machine, and it bolts straight onto the original pump drive, so the old pump is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Hydraulic Pump 9195235 Excavator Hydraulic Parts Hitachi ZX200 ZX200-1G ZX200LC HPV102 Main Pump Assembly

OTTO Hydraulic Pump 9195235 for the Hitachi ZX200 / ZX200-1G / ZX200LC excavator (HPV102) - supplied as a complete hydraulic pump, ready to fit. It is the variable displacement piston pump that feeds the whole machine, and it bolts straight onto the original pump drive, so the old pump is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Hydraulic Pump 339-0514 Excavator Hydraulic Parts Caterpillar 320 329E SBS140 Main Hydraulic Pump Assembly

OTTO Hydraulic Pump 339-0514 for the Caterpillar 320 / 329E excavator (SBS140) - supplied as a complete hydraulic pump, ready to fit. It is the variable displacement piston pump that feeds the whole machine, and it bolts straight onto the original pump drive, so the old pump is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Travel Device Assy 9170996 Excavator Hydraulic Parts Hitachi ZX200 ZX200-1G ZX200LC Complete Final Drive Assembly

OTTO Travel Device Assy 9170996 for the Hitachi ZX200 / ZX200-1G / ZX200LC excavator - supplied as a complete travel device, ready to fit. It sits at the end of the track frame and takes the drive from the travel motor - the reduction gears turn the motor speed down into the slow, high torque drive that pulls the track sprocket. It is supplied as a complete assembly, so the old unit is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Swing Motor Assy 282-1534 Excavator Hydraulic Parts Caterpillar E304 E305.5 E305 Swing Reduction Assembly

OTTO Swing Motor Assy 282-1534 for the Caterpillar E304 / E305.5 / E305 mini excavator - supplied as a complete swing motor assy, ready to fit. It mounts on the swing circle and turns the upper structure: hydraulic pressure drives the motor, which turns the upper frame through the swing reduction and output pinion. It is supplied as a complete unit, so the old assembly is unbolted and swapped. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Hydraulic Pump 31Q8-10030 Excavator Hydraulic Parts Hyundai R290-9 R300-9 R320-9 Main Hydraulic Pump Assembly

OTTO Hydraulic Pump 31Q8-10030 for the Hyundai R290-9 / R300-9 / R320-9 excavator - supplied as a complete hydraulic pump, ready to fit. It is the variable displacement piston pump that feeds the whole machine, and it bolts straight onto the original pump drive, so the old pump is unbolted and swapped. Supplied weight 158 kg. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Hydraulic Pump KBJ14600 Excavator Hydraulic Parts Case CX330C Main Hydraulic Pump Complete Assembly Kawasaki

OTTO Hydraulic Pump KBJ14600 for the Case CX330C excavator - supplied as a complete hydraulic pump, ready to fit. It is the variable displacement piston pump that feeds the whole machine, and it bolts straight onto the original pump drive, so the old pump is unbolted and swapped. Supplied weight 180 kg. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO-Engine Parts

OTTO Engine Assembly 6HK1 Excavator Engine Parts Isuzu 6HK1 Hitachi Complete Diesel Engine Motor Assembly 6HK1970539

OTTO Engine Assembly 6HK1 for the machine fitted with the Isuzu 6HK1 engine - supplied as a complete engine assembly, ready to fit. It replaces the original engine in one go - block, cylinder head, injection system, manifolds, fan and flywheel housing - so the old engine is lifted out and the new one dropped in. Supplied weight 781 kg. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Engine Assembly 4687461 Mining Excavator Parts Hitachi ZX870H-3 Isuzu 6WG1XYSA03 Complete Diesel Engine Assembly

OTTO Engine Assembly 4687461 for the Hitachi ZX870H-3 excavator (Isuzu 6WG1XYSA03) - supplied as a complete engine assembly, ready to fit. It replaces the original engine in one go - block, cylinder head, injection system, manifolds, fan and flywheel housing - so the old engine is lifted out and the new one dropped in. Supplied weight 1405 kg. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

6SD1 Engine Assembly Hitachi EX300-5 Isuzu

OTTO Engine Assembly 6SD1 Excavator Engine Parts Hitachi EX300-5 Isuzu 6SD1 Complete Diesel Engine Motor Assembly

OTTO Engine Assembly 6SD1 for the Hitachi EX300-5 excavator (Isuzu 6SD1) - supplied as a complete engine assembly, ready to fit. It replaces the original engine in one go - block, cylinder head, injection system, manifolds, fan and flywheel housing - so the old engine is lifted out and the new one dropped in. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

OTTO Engine Assembly BF4M2012C Excavator Loader Engine Parts Deutz BF4M2012C Complete Diesel Engine Motor Assembly

OTTO Engine Assembly BF4M2012C for the machine fitted with the Deutz BF4M2012C engine - supplied as a complete engine assembly, ready to fit. It replaces the original engine in one go - block, cylinder head, injection system, manifolds, fan and flywheel housing - so the old engine is lifted out and the new one dropped in. Send us the machine serial and the number on your old unit and we will confirm before dispatch. 3-12 months warranty options.

ND094200-0301 Fuel Feed Pump Komatsu 6D125 PC400-7

OTTO Fuel Feed Pump ND094200-0301 ND094200-0350 Construction Machinery Parts Komatsu 6D125 PC400-7 PC450-7 Priming Pump

OTTO ND094200-0301 Fuel Feed Pump for Komatsu PC400-7 / PC450-7 Excavator - the low pressure fuel feed (priming) pump for the 6D125 engine, supplied as a complete unit with its hand priming plunger and replacing Komatsu ND094200-0301 and ND094200-0350. It draws fuel from the tank and delivers it to the injection pump, so a weak feed pump shows up as long cranking, white smoke and power loss that is often blamed on the injection pump. Order it together with our 6156-71-1132 injection pump when the whole 6D125 fuel system is being renewed. Send us your machine serial and a photo of the old pump and we will confirm before dispatch. 3-12 months warranty options.

6156-71-1132 Fuel Injection Pump Komatsu 6D125 PC400-7

OTTO Fuel Injection Pump 6156-71-1132 6156-71-1131 094000-0463 Excavator Engine Parts Komatsu 6D125 PC400-7 PC450-7

OTTO 6156-71-1132 Fuel Injection Pump for Komatsu PC400-7 / PC400LC-7 / PC450-7 Excavator - the electronic fuel injection pump (Zexel ECD-U2 type) for the 6D125 engine (SA6D125E-3 / SAA6D125E-3), supplied as a complete assembly replacing Komatsu 6156-71-1132, 6156-71-1131, 6156-71-1130 and the Zexel number 094000-0463 - the nameplate on our unit carries both the Komatsu and Zexel numbers. The same pump is used on the WA470-3 / WA480-5 wheel loaders. Hard starting, smoke, rough running and low fuel pressure codes all point at the pump, and renewing it early protects the injectors. Send us your machine serial and a photo of the old pump and we will confirm before dispatch. 3-12 months warranty options.

4655019 Oil Cooler Hitachi ZX450-3 Hydraulic Oil Cooler

OTTO Oil Cooler 4655019 Excavator Hydraulic Parts Hitachi ZX450-3 ZX470H-3 ZX500LC-3 Hydraulic Oil Cooler Assembly

OTTO 4655019 Oil Cooler for Hitachi ZX450-3 Excavator - a complete aluminium hydraulic oil cooler assembly, supplied as a direct replacement for Hitachi part 4655019 and also listed for ZX450-3F, ZX470H-3, ZX470R-3, ZX500LC-3, the ZX520 machines, the PZX450-HCME / ZR260HC and the John Deere 450DLC. Weight approx. 65 kg. It bolts into the same cooling stack as the water tank radiator 4655008 and the intercooler 4655020, and takes the heat out of the oil returning from the main circuit - a blocked or leaking cooler is the usual reason hydraulic oil overheats and the machine derates. Checked and measured before shipment, 3-12 months warranty options.

32B01-01011 Cylinder Head Mitsubishi S6S

OTTO Cylinder Head 32B01-01011 32B01-01010 32B01-01012 Mitsubishi S6S Engine Heavy Equipment Parts Cylinder Head Assembly

OTTO 32B01-01011 Cylinder Head for the Mitsubishi S6S diesel engine - the six cylinder head used in Mitsubishi, TCM and Caterpillar forklifts and in industrial applications, supplied as a direct replacement for 32B01-01011 and also listed under the interchange numbers 32B01-01010 and 32B01-01012. Supplied complete with the valves fitted and boxed in a wooden export case. A cracked or warped head shows up as coolant loss with white smoke, overheating and combustion gas in the cooling system, and on a machine that works every shift it can hydraulic-lock the engine - renewing the head early is far cheaper than a short block. Checked before shipment, 3-12 months warranty options.

OTTO-Diesel Engine Assembly

OTTO ZX27U-2 ZX30U-2 Excavator Engine 3TNV88-SHB 3TNV88 Diesel Engine Assembly 4635922 for Hitachi Mini Excavator Repairing

This OTTO full diesel engine assembly with OEM number 4635922 adopts Yanmar original 3TNV88-SHB three-cylinder water-cooled power structure, specially made as replacement repair parts for Hitachi ZX27U-2 and ZX30U-2 compact mini excavators. The whole unit comes pre-assembled with cylinder block, cylinder head, fuel injection system, cooling pump, lubrication components and flywheel, offering one-stop power replacement to restore full machine performance for landscaping, indoor demolition and narrow-site municipal work.

OTTO Japan Brand New Excavator Engine Repairing 4JG1 Diesel Engine Assembly for Isuzu Complete Engine Replacement

This OTTO Japan-grade brand new 4JG1 full diesel engine assembly is a complete engine replacement unit tailored for Isuzu mini excavator overhaul projects. It adopts original Isuzu inline four-cylinder four-stroke water-cooled structure, equipped with full matching accessories including cylinder block, cylinder head, fuel injection pump, turbocharger, water pump, oil pump and flywheel assembly. It delivers stable, low-vibration power output for 6–8 ton small excavators, perfectly replacing worn-out original engines to restore full machine working performance at construction, landscaping and municipal sites.

OTTO Industrial High Quality Machinery Assembly C7.1 Diesel Engine Assembly for Excavator Drilling Rig Complete Engine

OTTO Industrial High Quality Machinery Assembly C7.1 Diesel Engine Assembly for Excavator Drilling Rig Complete Engine This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO Industrial High Quality Machinery Engines C9 Engine Assembly for Caterpillar CAT Diesel Engine C9

OTTO Industrial High Quality Machinery Engines C9 Engine Assembly for Caterpillar CAT Diesel Engine C9 This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO 345D 349D 349D2 Excavator Engine Assembly C13 Complete Diesel Engine Assy for Caterpillar CAT Engine Assembly C13

OTTO 345D 349D 349D2 Excavator Engine Assembly C13 Complete Diesel Engine Assy for Caterpillar CAT Engine Assembly C13 This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO Complete Engine Assembly C9 Diesel Engine for Caterpillar CAT 336D2 Machinery Engines

OTTO Complete Engine Assembly C9 Diesel Engine for Caterpillar CAT 336D2 Machinery Engines This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO 6WG1 Excavator Isuzu Diesel Motor Assembly 6WG1T Engine for Sale

OTTO 6WG1 Excavator Diesel Motor Assembly 6WG1T Engine for Sale This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

OTTO 6 Cylinders Diesel Isuzu 6BG1 6BG1T Engine for Sale Excavator

OTTO 6 Cylinders Diesel Isuzu 6BG1 6BG1T Engine for Sale Excavator This used for EXCAVATOR,Original new and china could offer and With 3-12 months warranty

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2001

company established

ABOUT OTTO

OTTO EXCAVATOR PARTS CO., LIMITED

GUANGZHOU OTTO EXCAVATOR PARTS CO., LIMITED was established in 2003 with over 23 years of dedicated experience in the manufacturing, precision rebuild, and global distribution of excavator components. Headquartered in Guangzhou, China, OTTO operates a high-caliber team of 21–60 industry professionals, including 6 senior technical engineers and 3 dedicated foreign trade elite teams, ensuring rigorous quality standards, competitive factory-direct pricing, and rapid delivery. We specialize in genuine and high-precision aftermarket components for world-class equipment, including Hitachi, Isuzu, Caterpillar, Komatsu, Volvo, SANY, Kobelco, Cummins, and Mitsubishi. As a proud standing member of the Guangzhou Construction Machinery Industry Association, OTTO serves global distributors, mining contractors, and repair hubs across more than 120 countries. 23+ Years Experience Founded in 2003, industry-proven reliability 50,000+ SKUs in Stock Hydraulic pumps, engines & drive units $10M+ Annual Export Supplying 120+ countries worldwide 800+ Vetted Suppliers OEM-tier factory ecosystem backing OUR CREDENTIALS & CAPABILITIES Official Authorizations, Proprietary Brands & Global Certifications At OTTO EXCAVATOR PARTS, we combine top-tier global manufacturer direct partnerships, proven proprietary engineering brands, and audited international compliance to provide heavy equipment owners and fleet operators worldwide with guaranteed reliability, zero downtime, and unmatched supply chain security. 1. Direct Manufacturer Partnerships & Official Authorizations Eliminating middleman markups and counterfeit risks through certified distribution channels. Isuzu Authorized Dealer Official authorized dealer channel supplying 100% genuine Isuzu diesel engine assemblies, cylinder blocks, cylinder heads, crankshafts, and overhaul rebuild kits (covering 4HK1, 6HK1, 6WG1, and 4JJ1 series) backed by official manufacturer warranty. Cummins Engine Authorized Dealer Direct access to genuine Cummins industrial diesel engines, electronic common rail fuel injection pumps, turbochargers, and heavy-duty aftermarket components engineered for heavy excavators, wheel loaders, and mining machinery. Korea TongMyung Hydraulic Distributor Authorized distributor for South Korea's premier hydraulic manufacturer TongMyung. We provide complete main hydraulic pumps, rotary swing motors, final drive travel devices, and OEM-spec hydraulic internal replacement kits with certified high-pressure tolerances. 2. Our Proprietary Brands — Engineered to OEM Standards Combining 20+ years of technical manufacturing experience with rigorous quality testing. OTTO Excavator Parts Our flagship proprietary brand delivers premium excavator components worldwide. From electrical sensors, wiring harnesses, and throttle motors to hydraulic control valves and undercarriage parts, every OTTO product undergoes strict CMM dimensional inspection and pressure testing to ensure 100% plug-and-play fitment. TOYO Hydraulic Seal Kits TOYO is our dedicated high-performance hydraulic sealing brand. Formulated with premium polyurethane (PU), hydrogenated NBR, and PTFE wear rings, TOYO seal kits are specifically engineered for extreme working pressures, severe temperature fluctuations, and extended operating lifespans across excavator boom, arm, bucket, and breaker cylinders. 3. Audited Enterprise Trust & International Compliance Verified on-site capabilities and strict European quality standards. Supplier for Fortune 500 Independently audited and recognized on Alibaba.com as an approved supplier delivering precision engineering machinery spares to Fortune 500 enterprises and global infrastructure contractors. CE Certified Compliance Certificate No. MTL23112100304R01 (Valid through Dec 2028). Verified compliance with European Union safety, health, and mechanical operational directives for seamless EU customs clearance. RoHS Environmental Compliance Certificate No. CCTI-2025060901C and test reports (Valid through Jun 2030). Guaranteeing all polymeric, electrical, and sealing components are free from restricted hazardous substances. 4. Transaction Security & Buyer Warranty Protection Complete peace of mind from initial payment through to job site installation. Alibaba Trade Assurance Every transaction is eligible for Alibaba Trade Assurance, safeguarding your capital with end-to-end payment security, guaranteed on-time dispatch, and product quality protection. Intertek On-Site Audited Third-party factory assessment verified by international testing leader Intertek. Our physical Guangzhou facility, stock levels, packaging standards, and export workflows have passed direct on-site inspection. 6-12 Months Warranty We stand behind our products. All genuine assemblies, OEM replacements, and remanufactured hydraulic components carry a comprehensive 6 to 12 months replacement warranty against manufacturing defects. European Distribution Hub Italy Overseas Warehouse & Direct Supp...

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Has 1,135 professional and technical employees
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Our factory covers an area of more than 1000 square meters

Latest News

With our unique hydraulic technology and control systems, we provide customers with the best productivity and optimum quality.

September 12. 2026 bauma CHINA 2026 Exhibition

Dear Partners & Customers, We are pleased to announce that OTTO will participate in bauma CHINA 2026 (International Trade Fair for Construction Machinery, Building Material Machines, Mining Machines and Construction Vehicles). We welcome you to visit our booth to discuss business and explore cooperation. Exhibition Details Exhibition Name: bauma CHINA 2026 Date: November 24 – 27, 2026 Venue: SNIEC (Shanghai New International Expo Centre) Address: No. 2345 Longyang Road, Pudong New Area, Shanghai 201204, China Pavilion: Hall N2 Booth No.: N2.276 We look forward to meeting you in Shanghai and exploring win-win cooperation together! Best regards, OTTO

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September 12. 2026 Mid-Autumn Festival arrangement 2026

Dear Friend, It is hereby notified that the coming Mid-Autumn Festival arrangement: 25th September 2026 to 27th September 2026. We will resume work on 28th September 2026. Sorry for any inconveniences caused. Wish you and your family happiness and health!

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August 24. 2026 CAT 320D3 Swing Motor & Swing Device: Complete Guide to the 525-3741 Swing Assembly & 524-2647 Swing Motor (2026)

Quick Answer: The CAT 320D3 swing motor (OEM No. 524-2647) and swing device / swing gearbox (OEM No. 525-3741, gearbox 543-1000) form the complete swing drive assembly that rotates the upper structure of Caterpillar 320D3 excavators. The assembly combines a high-torque hydraulic swing motor with a hardened planetary reduction gearbox and an integrated wet brake, delivering smooth, powerful swings with fast start-stop response. OTTO Parts supplies brand-new, factory-tested 525-3741 swing assemblies with a 12-month warranty, ready for worldwide shipment. Key Takeaways The CAT 320D3 swing system consists of the 524-2647 swing motor and the 525-3741 swing device (planetary gearbox 543-1000) — replace them as a complete assembly to guarantee perfect matching. The 525-3741 swing device is engineered for direct OEM-position installation on the E320D3 / 320D3, providing strong swing torque with smooth, fast start-stop response. Hardened planetary gears give the assembly heavy-duty impact resistance and reduce gear-noise risk during continuous swinging cycles. Stable seals and wet-brake components minimize internal leakage and oil loss, cutting downtime in high-cycle loading work. OTTO supplies brand-new assemblies with a 12-month warranty, bench-tested before shipment, and can confirm the exact configuration for your machine serial number. Most swing failures start with small signals — oil leaks, sluggish rotation, grinding noise or drifting — catch them early and you avoid a full assembly replacement. Table of Contents Introduction: Why the Swing Drive Is the Heart of Productivity CAT 320D3 Excavator — Key Machine Specifications Swing Motor & Swing Device — Part Numbers and Specifications Compatibility: Which CAT Models Use the 525-3741 Swing Assembly? Key Features of the OTTO 525-3741 Swing Device Common Problems, Symptoms and Diagnosis Maintenance and Service Tips Buying Guide: New, Rebuilt or OEM? Real-World Case Study and Company Credibility Frequently Asked Questions (FAQ) Conclusion and How to Order 1. Introduction: Why the Swing Drive Is the Heart of Productivity The Caterpillar 320D3 is a 20-ton class hydraulic excavator widely used in general construction, roadwork, utilities and material handling. Unlike travel, the swing function operates on nearly every working cycle: the operator swings the upper structure to dig, dump and reposition dozens of times per hour. That makes the swing drive — the swing motor plus planetary swing gearbox — one of the most heavily cycled assemblies on the machine. Each swing assembly converts hydraulic pressure into the rotary torque that turns the cab, boom and counterweight on the swing bearing. When it fails, the machine can still dig — but it cannot swing, which means it cannot work at all. On a busy site, a swing-drive failure stops production immediately, so understanding the part numbers, failure symptoms and replacement options of the CAT 320D3 swing motor is essential for owners, mechanics and procure...

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August 21. 2026 Hitachi ZX850-3 Travel Motor: Complete Guide to the 9251681 Travel Device & 4636857 Final Drive (2026)

Quick Answer: The Hitachi ZX850-3 travel motor (OEM part No. 4636857) and travel device / final drive (OEM part No. 9251681) form the complete travel drive assembly for Hitachi ZX850-3, ZX870-3 and ZX1000K-3 series 80-90 ton mining-class excavators. The assembly combines a high-torque hydraulic motor with a heavy-duty planetary reduction gearbox, delivering dependable traction under the toughest mining conditions. OTTO Parts supplies brand-new, fully assembled 9251681 travel devices with a 12-month warranty, ready to ship worldwide. Key Takeaways The ZX850-3 travel system consists of the 4636857 travel motor and the 9251681 travel device (final drive) — order them as a complete assembly to guarantee perfect matching. The 9251681 travel device also fits ZX870-3, ZX870H-3, ZX870R-3, ZX850LC-3 and ZX1000K-3 series machines, so one part number covers a whole fleet family. The assembly uses a high-torque planetary transmission with hardened, high-strength gears, engineered for impact resistance and long service life in mining applications. Each unit is a compact integrated structure (motor + gearbox), which simplifies installation and reduces maintenance downtime. OTTO supplies brand-new assemblies weighing approx. 1,200 kg, packed at 100 x 100 x 70 cm, with a 12-month warranty and worldwide shipping. Most premature failures come from contaminated oil, worn shaft seals and brake-pack wear — regular oil sampling and torque checks extend service life dramatically. Table of Contents Introduction: Why the Travel Drive Matters on the ZX850-3 Hitachi ZX850-3 Excavator — Key Machine Specifications ZX850-3 Travel Motor & Travel Device — Part Numbers and Specifications 9251681 Travel Device Compatibility — Comparison Table Key Features of the OTTO 9251681 Travel Device Common Problems, Symptoms and Diagnosis Maintenance and Service Tips Buying Guide: New, Rebuilt or OEM? Real-World Case Study and Company Credibility Frequently Asked Questions (FAQ) Conclusion and How to Order 1. Introduction: Why the Travel Drive Matters on the ZX850-3 The Hitachi ZX850-3 is an 80-ton class hydraulic excavator built for large-scale mining, quarrying and heavy earthmoving. With an operating weight of roughly 80,500 kg and a 460 hp Isuzu 6WG1 engine, this machine moves enormous amounts of material every shift. That workload passes directly through the undercarriage — and the components that take the heaviest punishment are the two travel drives. Each travel drive is a complete assembly that converts hydraulic pressure into the torque needed to move and steer the machine: a hydraulic travel motor converts oil flow into rotary motion, and a planetary final drive (travel device) reduces that rotation into the high torque delivered to the sprocket and track. When either half fails, the machine is down — and on an 80-ton excavator, downtime costs thousands of dollars per day. This guide explains everything an owner, mechanic or procurement manager needs to know about the ZX850-3 ...

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August 03. 2026 Isuzu 6WG1 Renewed Engine — Bring Your Hitachi ZX450/470 Back to Life

Isuzu 6WG1 Renewed Engine — Bring Your Hitachi ZX450/470 Back to Life OTTO-PARTS.COM offers expertly renewed Isuzu 6WG1 engine assemblies — the cost-effective alternative to a new engine for your Hitachi ZX450 & ZX470-5G excavators. Our 6-Step Renewal Process Genuine Isuzu Parts — only OEM components used for every rebuild Block Flatness Precision Inspection — dial-indicator verified to factory specs Strict Standards Adherence — every tolerance checked against OEM engineering data Crankshaft STD Dimension Verification — micrometer-measured to ensure spec compliance Comprehensive Quality Measurement — multi-point inspection across all critical surfaces Fully Renewed Assembly — complete engine delivered ready to install, with turbo, manifolds, and cooling fan Why Choose Renewed? Significant cost savings vs. brand-new OEM engine Premium quality — rebuilt to OEM standards, not just patched up Rigorously tested for peak performance before shipment Maximum reliability for heavy-duty applications

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August 03. 2026 Hino J08E-TM Engine — The Perfect Match for Your Kobelco SK350-8

Hino J08E-TM Engine — The Perfect Match for Your Kobelco SK350-8 OTTO-PARTS.COM introduces the J08E-TM diesel engine — a precision-engineered power unit delivering OEM-grade performance for the Kobelco SK350-8 excavator series. Key Highlights 197kW / 271HP @ 2100RPM — powerful output tailored for heavy digging and lifting Turbocharged & Intercooled for enhanced combustion efficiency and cooler operation Direct Injection fuel system ensuring superior fuel economy and lower emissions High Torque, Low-End Grunt — optimized torque curve for demanding excavation cycles Perfect OEM Fit for Kobelco SK350-8, with verified flywheel housing dimensions included Precision You Can Measure We provide full mounting dimensions for hassle-free installation: Center-to-mounting edge: 12.15 cm Inner bolt circle diameter: 46.75 cm Outer housing diameter: 49.99 cm Central hub: 12 mounting holes Manufactured by Hino Motors, Ltd., this J08E-TM engine combines Japanese engineering precision with field-proven durability.

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August 03. 2026 Cummins NTA855-C280 Engine — Legendary Power, Built to Outlast

Cummins NTA855-C280 Engine — Legendary Power, Built to Outlast OTTO-PARTS.COM proudly presents the Cummins NTA855-C280 industrial diesel engine — a proven workhorse engineered for the toughest jobsites on earth. Key Highlights 280HP @ 2100RPM with massive 14.0L displacement — relentless power for heavy-duty performance Turbocharged & Aftercooled for superior thermal efficiency and lower fuel consumption under sustained loads Cummins PT™ Self-Adjusting Fuel System — iconic precision injection that eliminates manual tune-ups and maximizes uptime In-Line 6-Cylinder architecture delivering legendary smoothness and durability Manufactured by Chongqing Cummins Engine Co., Ltd. (2022 production), rated for altitudes up to 3,600 m Built for Multiple Fronts From construction excavators and mining dump trucks to marine propulsion, power generation, and oil & gas rigs — the NTA855-C280 adapts seamlessly across industries.

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June 30. 2026 OTTO Mitsubishi D04FR/D06FR Fuel Injector

OTTO Mitsubishi D04FR/D06FR Fuel Injector Part No.:32G61-00020 / 32R61-10010 Bosch-level quality with Mitsubishi packing Large stock, quick delivery for bulk orders Perfect match for Mitsubishi diesel engines Durable, cost-effective injector replacement parts.

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June 06. 2026 Dragon Boat Festival arrangement 2026

Dear Friend, It is here by notified that the coming Dragon Boat Festival arrangement: 19th June 2026 to 21th June 2026. Sorry for any inconveniences caused. Wish you and your family happiness and health!

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May 21. 2026 OTTO HYDRAULIC PARTS — ABUNDANT STOCK, READY TO SHIP!

OTTO HYDRAULIC PARTS — ABUNDANT STOCK, READY TO SHIP! We keep a full range of hydraulic pump parts, including pistons, valve plates, cylinder blocks, and seals. ✅ OEM quality ✅ Fast worldwide shipping ✅ Ready stock for major excavator brands Your equipment never has to wait.

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