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With our unique hydraulic technology and control systems, we provide customers with the best productivity and optimum quality.
376-4074-OTTO
OTTO OEM High Quality C7.1 Engine Crankshaft 3764074 376-4074 for CAT 320E 323E Excavator Spare Parts
OTTO OEM high-quality C7.1 engine crankshaft part 376-4074 (3764074) is custom-made for CAT 320E and 323E excavators. Precision CNC machining ensures accurate journal roundness and balance, delivering smooth engine rotation and reducing vibration during heavy-duty excavation work. It matches original power transmission standards to keep the C7.1 engine output stable under continuous load.
201-60-00200-OTTO
OTTO High Quality PC60-7 Excavator Final Drive 201-60-00100 201-60-00200 Travel Motor for Komatsu PC60-7 Travel Drive
This OTTO high-performance final drive travel motor with part numbers 201-60-00100 and 201-60-00200 is specially engineered for Komatsu PC60-7 excavators. It serves as the core traveling drive component, delivering stable hydraulic power conversion and consistent walking torque. The precisely calibrated internal gear structure ensures flexible traveling, smooth steering and reliable load-bearing performance during daily earthmoving and construction operations.
148-4736-OTTO
OTTO High Quality E307B Excavator Travel Motor Assembly 1484736 148-4736 Final Drive for Cat Spare Parts Travel Drive
The OTTO high-quality travel motor assembly with part number 148-4736 (1484736) is a dedicated final drive component designed for CAT E307B excavators. It provides stable and powerful walking torque for the excavator, ensuring smooth traveling, steering and climbing performance under various complex construction conditions. With precise gear matching and stable hydraulic transmission, it effectively avoids walking jitter and insufficient power during daily operation.
174-7526-OTTO
OTTO High Quality 322C 325C Excavator Injector Assembly 174-7526 Fuel Injector for CAT 3126B Engine Spare Parts Diesel Injector
This high-quality OTTO fuel injector assembly with part number 174-7526 is professionally manufactured for CAT 3126B diesel engines and perfectly fits CAT 322C and 325C excavators. Adopting precision injection technology, it achieves uniform diesel atomization and accurate fuel delivery volume, which effectively improves engine combustion efficiency, enhances mechanical power performance, and reduces incomplete combustion waste and exhaust emissions during excavator operation.
557-7634-OTTO
OTTO OEM High Quality 5577634 557-7634 Injector C-9 C9 Engine Fuel Injector for Cat Common Rail Diesel Engine Injection System
OTTO OEM high-quality fuel injector part 557-7634 (5577634) matches Cat C9 common rail diesel engines perfectly. It delivers even, fine atomization of diesel fuel to boost combustion efficiency, cut fuel consumption and reduce black smoke during engine operation. Strict OEM dimensional standards ensure consistent fuel injection pressure for stable engine power output.
256-0096-OTTO
OTTO High Quality 2560096 320D Excavator Hydraulic Pump Regulator 256-0096 Regulator for CAT E320D E323D Parts
OTTO high-quality hydraulic pump regulator part 256-0096 is tailor-made for CAT E320D and E323D excavators. It precisely controls hydraulic pump displacement to stabilize system pressure and output flow, effectively reducing machine jitter during digging and lifting. Manufactured with original size standards, this 2560096 regulator delivers sensitive response and accurate flow adjustment for daily heavy construction work.
593-3841-OTTO
OTTO 395 Next Gen Excavator Swing Pump 593-3841 Hydraulic Piston Pump for Cat Swing Main Pump Assembly Parts
This OTTO heavy-duty swing piston pump with OEM part number 593-3841 is the dedicated hydrostatic swing power component exclusively developed for Caterpillar 395 Next Gen large mining excavators. It belongs to the independent swing circuit system, supplying stable high-pressure hydraulic oil to drive the swing motor, supporting high-torque smooth rotation during heavy mining, rock loading and mass earthmoving operations. Built-in pressure compensation and energy regeneration modules realize swing brake energy recovery, effectively boosting machine operation efficiency while cutting fuel consumption.
9256100-OTTO
OTTO ZX330-3 ZX350-3 Excavator Main Hydraulic Pump 9256100 for Hitachi HPV145 Pump Assembly
This OTTO heavy-duty tandem variable displacement hydraulic main pump with OEM part number 9256100 adopts Hitachi original HPV145 load-sensing design, perfectly matching Hitachi ZX330-3 and ZX350-3 medium-large crawler excavators. Equipped with dual piston pump bodies and integrated proportional regulators, it outputs stable high-pressure hydraulic oil to drive boom, arm, bucket, travel and swing devices, supporting smooth multi-action compound operation under long-hour heavy mining, quarrying and earthmoving loads.
129C00-57000-OTTO
OTTO Excavator Common Rail 129C00-57000 4TNV98 Fuel Rail Common Rail for Yanmar 4TNV Series Engine Parts
This OTTO high-precision common rail fuel rail with part number 129C00-57000 is professionally customized for Yanmar 4TNV98 and 4TNV series diesel engines. As a core component of the common rail fuel injection system, it stably stores and balances fuel pressure, ensuring consistent fuel supply to each injector. It effectively maintains stable engine fuel supply pressure and improves overall fuel injection accuracy during equipment operation.
6V-9748-OTTO
OTTO OEM Quality Rotary Shaft Sealing Excavator Spares Caterpillar CAT 3116 3126B C-12 322C 325C 324D 6V-9748 Oil Seal
This OTTO OEM-standard rotary shaft oil seal with OEM part number 6V-9748 is an essential dynamic sealing spare part designed for Caterpillar 3116, 3126B and C-12 heavy-duty diesel engines, fitting CAT 322C, 325C and 324D medium crawler excavators. It is mounted on crankshafts, hydraulic pump drive shafts and auxiliary rotating assemblies, creating a reliable dynamic barrier to retain internal lubricating oil while stopping external mud, dust and water from invading bearing chambers during long-term quarrying and heavy earthmoving operations.
222-3901-OTTO
OTTO Heavy Duty High Temp Sealing Engine Components Caterpillar CAT C9 330C 330D 336D 340D 222-3901 Gasket
This OTTO heavy-duty high-temperature sealing gasket with OEM part number 222-3901 is a core engine overhaul component exclusively developed for Caterpillar C9 diesel engines, perfectly matching CAT 330C, 330D, 336D and 340D medium-large excavators. It is installed on exhaust manifolds, turbo flanges and EGR connecting joints, forming an airtight isolation barrier to block high-temperature exhaust gas leakage and isolate cooling liquid and engine oil under long-hour heavy mining, rock breaking and large-scale earthmoving construction with severe thermal cycling.
222-3901-OTTO
OTTO Heavy Duty High Temp Sealing Engine Components Caterpillar CAT C9 330C 330D 336D 340D 222-3901 Gasket
This OTTO heavy-duty high-temperature sealing gasket with OEM part number 222-3901 is a core engine overhaul component exclusively developed for Caterpillar C9 diesel engines, perfectly matching CAT 330C, 330D, 336D and 340D medium-large excavators. It is installed on exhaust manifolds, turbo flanges and EGR connecting joints, forming an airtight isolation barrier to block high-temperature exhaust gas leakage and isolate cooling liquid and engine oil under long-hour heavy mining, rock breaking and large-scale earthmoving construction with severe thermal cycling.
225-6477-OTTO
OTTO High Grade Hydraulic Rebuild Kit Machinery Spares Caterpillar CAT 3054C 3054E 312D2 315C 318D2 225-6477 Plate
This OTTO high-grade hydraulic control plate with OEM part number 225-6477 is a core matching component for hydraulic pump rebuild kits, perfectly adapted to Caterpillar 3054C and 3054E diesel engines, widely used on CAT 312D2, 315C and 318D2 compact excavators. As the key flow distribution plate inside the main hydraulic pump, it precisely guides high-pressure hydraulic oil to each piston chamber, coordinates load sensing pressure signals and stabilizes pump displacement output, supporting smooth multi-action compound operation for municipal renovation, landscaping and narrow-site earthmoving work.
2S-0795-OTTO
OTTO Industrial High Temp Sealing Replacement Spares Caterpillar CAT 3304 3306 C9 E200B 320B 330C 2S-0795 Gasket
This OTTO industrial high-temperature sealing gasket with OEM part number 2S-0795 is a general overhaul sealing spare specially developed for Caterpillar 3304, 3306 and C9 diesel engines, applicable to CAT E200B, 320B and 330C classic excavator models. Mounted on engine intake manifolds, exhaust flanges and cooling component joint surfaces, it forms a reliable isolation layer to block high-temperature gas, coolant and oil leakage during long-time heavy-load mining, road construction and earthmoving work with frequent thermal alternation.
21K-06-71261-OTTO
OTTO Durable OEM Quality PC200-7 PC210 PC210LC-7K Excavator Harness 21K0671261 21K-06-71261 Engine Wiring Harness for Komatsu
This OTTO OEM-grade engine wiring harness carries part number 21K0671261 (21K-06-71261), fully tailor-made for Komatsu PC200-7, PC210 and PC210LC-7K excavators. It strictly follows original circuit layout and plug size standards, enabling plug-and-play installation without extra cutting or modification during machine maintenance.
330-9847-OTTO
OTTO Premium High Temp Sealing Excavator Parts Caterpillar CAT 318E 320 330-9847 Gasket C4.4 Engine Gasket
This OTTO premium high-temp sealing gasket with OEM part number 330-9847 is an essential sealing spare part designed for Caterpillar C4.4 diesel engines, perfectly matching CAT 318E medium excavators. Installed between engine mating surfaces, it forms a reliable isolating barrier to block lubricating oil, coolant and high-temperature combustion gas penetration, maintaining stable sealing performance under long-hour continuous heavy-load construction and quarry operations with drastic temperature fluctuations.
4635922-OTTO
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.
4JG1-OTTO
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.
C7.1-OTTO
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
C9-OTTO
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
C13-OTTO
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
C9-OTTO
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
6WG1
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
6BG1-313413-FDJZC
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
2001
company established
ABOUT OTTO
OTTO EXCAVATOR PARTS CO., LIMITED
OTTO EXCAVATOR PARTS CO.,LIMITED is a leading manufacturer and distributor of earthmoving parts for Hitachi Komatsu Caterpillar Isuzu Cummins in Guangzhou China. It consistes of 3 branches , isuzu authorized dealer,  Korea TongMyung Hydraulic Dealer, And Office in HongKong. And OTTO have distributors in the worlds, Such as Russia, Canada, Mexico, Brazil, Colombia, Ecuador, Turkey, Philippines, Ghana, South Africa, New Zealand, Australia, South Korea..etc.  OTTO also selling parts to chinese market, 90% supply to Guangzhou market trading company. OTTO service many well know brand dealer Isuzu ,Hitachi, JCB, Sumitomo, Komatsu, Sany in China and abroad. With many years experience in production and distribution, the OTTO has cultivated a team of highly skilled sales engineers and professional sales team who are able to ensure the highest quality, competitive prices and timely delivery. OTTO also actively participates in every exhibition, and will visit customers' companies, in-depth understanding of customer needs, personalized customized services. This is a part of the warehouse. If you need accessories, you can send an email or call to help you get more orders locally.
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24H service online+86-15302269990

  • vision
    vision
    To be NO. 1 on excavator parts
  • sense of worth
    sense of worth
    O-Open/T-Target/T-Team/ T-Team
  • 210+

    Has 1,135 professional and technical employees

  • 1210+

    The products are exported to Asia, South America and other countries and regions.

  • 71428570+

    Total Annual Sales Volume(dollars)

  • 10000+

    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.
OTTO Mitsubishi D04FR/D06FR Fuel Injector
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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Dragon Boat Festival arrangement 2026
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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OTTO HYDRAULIC PARTS — ABUNDANT STOCK, READY TO SHIP!
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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OTTO Komatsu SAA6D125E-5 Engine Assembly for PC450-8 Excavators
May 08. 2026 OTTO Komatsu SAA6D125E-5 Engine Assembly for PC450-8 Excavators
OTTO Komatsu SAA6D125E-5 Engine Assembly for PC450-8 Excavators OTTO Parts introduces its factory-grade Komatsu SAA6D125E-5 engine assembly, purpose-built for the PC450-8 excavator. Delivering OEM-level quality, this 263 kW power unit offers drop-in fit, high performance, and proven durability for heavy-duty construction and mining operations. ✅ Original Quality & Perfect Fit ✅ High Power & Fuel Efficiency ✅ Reliable & Long-Lasting Performance ✅ Ready-to-Use, Complete Assembly In stock now with global shipping and dedicated after-sales support. Learn more at otto-parts.com
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Hitachi Hydraulic Solutions: Pumps, Travel & Swing Motors
April 30. 2026 Hitachi Hydraulic Solutions: Pumps, Travel & Swing Motors
Hitachi Hydraulic Solutions: Pumps, Travel & Swing Motors Immediate Stock: Forget the 4-8 week wait from official dealers. We ship in 24 hours KPM Original Price: 30%-40% lower than your local dealer's price. Warranty: We provide a full technical guarantee for mining-grade performance. EXW HONGKONG
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No More Downtime – Yanmar Engines In Stock & Ready
April 30. 2026 No More Downtime – Yanmar Engines In Stock & Ready
No More Downtime – Yanmar Engines In Stock & Ready OTTO delivers 100% genuine, brand-new Yanmar engines – factory quality, massive stock, fast delivery, guaranteed. Your excavator is down, and you need a replacement fast? We keep genuine Yanmar engines in stock, so you don’t lose days waiting for parts. Fast dispatch, reliable delivery – get your machine back to work in no time. 100% original quality, factory-tested, guaranteed to perform like new.
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GENUINE ISUZU 4HK1 ENGINE | READY FOR YOUR EXCAVATOR
April 30. 2026 GENUINE ISUZU 4HK1 ENGINE | READY FOR YOUR EXCAVATOR
GENUINE ISUZU 4HK1 ENGINE | READY FOR YOUR EXCAVATOR ✅ 100% Genuine Isuzu 4HK1 Engine Original Isuzu craftsmanship & quality, factory-tested for excavator use ✅ Reliable & Durable Performance Built to withstand harsh construction conditions, engineered for long service life ✅ Fuel Efficient & High Productivity Lower fuel consumption with consistent power output, boosting your work efficiency ✅ Easy Maintenance & Proven Design Service-friendly structure with widely available genuine parts ✅ Ready-to-Ship & Fast Delivery In-stock units for quick dispatch, backed by OTTO’s 20 years of industry experience
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OTTO: YOUR TRUSTED KUBOTA ENGINE SUPPLIER
April 30. 2026 OTTO: YOUR TRUSTED KUBOTA ENGINE SUPPLIER
OTTO: YOUR TRUSTED KUBOTA ENGINE SUPPLIER OTTO supplies 100% genuine Kubota engines, brand new and fully stocked. Fast delivery, OEM quality, and professional service guaranteed. ✅ 100% Kubota Genuine Brand-new, factory-original engines, zero knockoffs ✅ Full Range In Stock Multiple models ready for immediate dispatch ✅ Fast Global Delivery Quick shipping & reliable logistics support ✅ High-Quality & Durable Factory-tested performance for excavators & compact equipment ✅ Professional Service Technical backup & after-sales support available
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 International Workers' Day arrangement 2026
April 20. 2026 International Workers' Day arrangement 2026
Dear Friend, It is here by notified that the coming International Workers' Day arrangement: 1st May 2026 to 5th May 2026.We will resume work on 6th May. Sorry for any inconveniences caused. Wish you and your family happiness and health!
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UGOL ROSSII & MINING 2026 Exhibition
April 14. 2026 UGOL ROSSII & MINING 2026 Exhibition
Dear Partners and Customers, We are glad to inform you that OTTO will participate in UGOL ROSSII & MINING (Novokuznetsk International Mining Exhibition) in Russia. We sincerely welcome you to visit our booth for business discussion and cooperation. Exhibition Details Exhibition Name: UGOL ROSSII & MINING Date: June 2 – 5, 2026 Venue: Kuzbass Fair Exhibition Center (also called Kuzbasskaya Yarmarka) English Address: 51 Avtotransportnaya St., Novokuznetsk, Kemerovo Region, 654038, Russia Russian Address: ул. Автотранспортная, 51, Новокузнецк, Кемеровская область, 654038 Pavilion: Hall 2 Booth No.: A9 We look forward to meeting you in Novokuznetsk and exploring win-win cooperation together! Best regards, OTTO
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