Guangzhou Youdao Machinery Equipment Co., Ltd.
                                                                                                           
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20 Years
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1121117121 Excavator Hydraulic Piston Fits Hitachi EX300-3HHE Isuzu 6BD1T Diesel Engine

Price Negotiable
Price: ¥1800-2000
MOQ: 1 Piece
Delivery Time: If Not Available, Please ask for the lead time
Brand: ISUZU
Product Description
1121117121 Genuine Piston Fits Hitachi EX300-3HHE Isuzu 6BD1T Diesel Engine
Product Specifications
Part Name Piston; STANDARD
Part Number 1-12111712-1 (also referenced as 1121117121, 1121117120)
Brand ISUZU (100% Original Guaranteed)
Place Of Origin Japan
Quality Standard Genuine Standard
Condition 100% Brand New
MOQ 1 Piece
Net Weight 1.6 KG
Packaging Original ISUZU Sealed Packaging with Authenticity Label
Compatible Equipment Models Hitachi (EX300-2, EX300-3, EX300-3HHE)
Product Features
  • Reinforced Direct-Injection Bowl and Excellent Thermal Cracking Resistance: Cast from premium high-silicon aluminum alloy, this piston features excellent thermal conductivity. The rim of the direct-injection (DI) combustion bowl is precisely reinforced to withstand the alternating thermal stress under 6BD1T turbocharged conditions, effectively preventing thermal erosion or early micro-cracking during long-term high-temperature operations.
  • Austenitic Al-Fin Insert for First Ring Groove Protection: To counter the harsh working conditions of frequent load fluctuations and high-frequency impacts in excavator operations, a Ni-resist (Al-Fin) cast iron insert is metallurgically bonded into the first ring groove. This provides a high-hardness bearing surface, completely preventing the groove from widening or scoring under high temperature and pressure, ensuring perfect long-term compression sealing.
  • Micron-Level Asymmetric Barrel Skirt for Reduced Friction and Anti-Scuffing: The piston skirt incorporates a micron-level precision asymmetric barrel/oval profile. This advanced geometry perfectly compensates for thermal expansion deformation, ensuring smoother travel inside the cylinder liner to minimize cold-start engine slap noise while drastically reducing frictional resistance and the risk of cylinder scuffing.
Part Location Diagram
Hitachi excavator piston location diagram showing part placement in engine assembly
Friendly Reminder: Please ensure this part number matches your machine model and serial number. We strongly recommend checking with the official parts catalog or providing your machine serial number before purchase to avoid ordering the wrong part.
ISUZU genuine part packaging and authenticity verification Close-up view of ISUZU piston showing manufacturing details and markings
Contact Information
Contact Person Whatsapp/WeChat Email
Sylvia (International Sales Specialist) +86 19120194795 sale01@uniwaypart.com
Anna +86 13229460031 -

Get in Touch

Have questions about our products or want to discuss a custom order? Our team is ready to help you.

Company Guangzhou Youdao Machinery Equipment Co., Ltd.
Location D08-11Zhu Cun International Machinery Market, Guangzhou, China
Contact Person Sylvia Xie

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