OTTO-Hydraulic Parts
177-2443-OTTO

OTTO 177-2443 Stick Cylinder Assembly for Caterpillar CAT 322C 322CL Excavator Arm Hydraulic Ram 1772443 Part

Maximize your excavator's operational efficiency with the OTTO Stick Cylinder Assembly (P/N: 177-2443), a premium aftermarket replacement designed for heavy-duty durability and precise OEM-style fitment. This high-quality arm hydraulic ram restores stable and powerful hydraulic movement to your CAT excavator, offering a cost-effective alternative to genuine OEM cylinder parts.









  • Order(MOQ)::

    1pc
  • Goods Stock::

    100
  • Payment::

    T/T, Western Union, L/C, Paypal, etc
  • Product Origin::

    China
  • Shipping Port::

    Huangpu, Guangzhou
  • Lead Time::

    In Stock
  • Part No: :

    177-2443
  • Model::

    CAT 322C 322CL
  • Application::

    EXCAVATOR

OTTO 177-2443 Stick Cylinder Assembly for Caterpillar CAT 322C 322CL Excavator Arm Hydraulic Ram 1772443 Part



The OTTO 177-2443 Stick Cylinder Assembly is a dedicated aftermarket hydraulic component built exclusively for Caterpillar excavators. As a critical part of the excavator’s working device system, it delivers the necessary hydraulic force to control smooth and precise movement of the stick (arm), supporting normal digging, lifting and material handling operations. Engineered to meet strict international industry standards, this hydraulic ram ensures consistent thrust output, reliable long-term performance and rugged durability, making it indispensable for maintaining full productivity of your CAT excavator.



Technical Specifications


Item
Details
Product Name
Stick Cylinder Assembly (Arm Hydraulic Ram)
Part Number
OTTO 177-2443 (1772443)
Cross Reference
CAT OEM 177-2443 / 1772443 Equivalent Replacement
Compatible Brand
Caterpillar (CAT)
Machine Type
Hydraulic Excavator
Application
Excavator Stick (Arm) Hydraulic System
Material
High-Strength Cast Iron, Hardened Steel Piston Rod, Wear-Resistant Seals
Condition
Premium Aftermarket Replacement


Key Product Advantages




OEM-Grade Perfect Fitment: Engineered to exact CAT factory specifications for 322C and 322CL excavators, ensuring true drop-in installation. The mounting brackets, pin bore sizes and hydraulic ports align perfectly with the original stick and frame structure, eliminating any modifications or adjustments during replacement.
Stable Hydraulic Thrust & Smooth Operation: Built with precision-machined piston, honed cylinder tube and high-pressure resistant seals, this stick cylinder maintains consistent hydraulic pressure and smooth linear movement. It restores the excavator’s original digging force and arm control precision, avoiding lagging or unstable operation.
Heavy-Duty Durability for Harsh Jobsites: Constructed with a hardened, corrosion-resistant piston rod and heavy-duty wear-resistant seals to withstand high hydraulic pressure, continuous vibration and harsh construction site conditions. This robust design prevents oil leakage, reduces internal wear, and significantly extends the service life of the cylinder assembly.

177-2443-OT


Applications


This OTTO 177-2443 stick cylinder assembly is specifically designed for Caterpillar 322C series hydraulic excavators, which are widely used for construction excavation, earthmoving, trenching, and heavy-duty material handling tasks.
Compatible Models:
  • CAT Excavator Series: 322C, 322CL

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.

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