Wespc (Dongguan) Tech Co., Ltd.
                                                                                                           
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WESPC Wiring Harness 342-2890 For 374D 374DL 390D 390DL hydraulic excavators

Price Negotiable
Price: $410-$550(1 Piece)
MOQ: 10
Delivery Time: 5-10 work days
Brand: WESPC
Product Description
WESPC Wiring Harness 342-2890 For 374D 374DL 390D 390DL Hydraulic Excavators
Premium quality wiring harness designed specifically for heavy-duty hydraulic excavators, providing reliable electrical connectivity and circuit protection.
Brand Name WESPC
Place of Origin China
Part Number 342-2890
After-sales Service Video Technical Support, Online Support
Marketing Type Ordinary Product
Certificate ISO9001
Warranty 1 Year
Stock Yes
Application
The 342-2890 Wiring Harness functions as a Fuse Box Assembly Wiring Harness (also referenced as Harness AS-PANEL or EFI Fuse Box Assembly Wiring Harness) specifically engineered for 70-ton class hydraulic excavator platforms. This harness serves as the critical electrical interface connecting the operator cab's fuse box assembly to the main electrical distribution system, facilitating comprehensive power distribution and circuit protection for critical machine components.
It is extensively utilized across multiple heavy-duty excavation equipment configurations, including standard excavator models and long boom variants. The harness is compatible with machines powered by 15.2-liter and 18.0-liter displacement diesel engines featuring turbocharging and air-to-air aftercooling technology, supporting the electrical infrastructure for cab-mounted fuse boxes, relay panels, circuit breakers, and distribution terminals.
Technical Specifications
  • Harness Type: Fuse Box Assembly Wiring Harness (Harness AS-PANEL)
  • Alternative Names: EFI Fuse Box Assembly Wiring Harness; Cab Wiring Harness Assembly
  • Compatible Equipment: 374D, 374DL, 390D, 390DL hydraulic excavators
  • Engine Compatibility: 15.2L and 18.0L displacement diesel engines with turbocharging and air-to-air aftercooling
  • Voltage Rating: 24V DC heavy-duty construction equipment electrical systems
  • Physical Dimensions: Approximately 35 cm × 32 cm × 16 cm (13.8" × 12.6" × 6.3")
  • Weight: Approximately 3.3 kg (7.3 lbs)
  • Connector Systems: Multi-pin configurations utilizing Deutsch, Molex, AMP, and JAE terminal technologies with sealed housings
  • Conductor Material: High-purity oxygen-free copper with tin plating for corrosion resistance
  • Wire Gauge: Automotive-grade multi-strand copper conductors ranging from 18 AWG to 14 AWG depending on circuit amperage requirements
  • Circuit Configuration: Multi-conductor bundle with specialized circuits for EFI systems, relay controls, and power distribution
  • Insulation Materials: Heat-resistant silicone rubber, cross-linked polyethylene (XLPE), and thermoplastic elastomer (TPE) compounds
  • Protection Rating: IP67-rated sealed connectors providing protection against dust, moisture, and hydraulic fluid ingress
  • Temperature Performance: Operating range from -30°C to +85°C, resistant to thermal cycling and extreme temperature differentials
  • Harness Architecture: Precision-wrapped bundling with strategic branching points for connection to fuse terminals, relay sockets, and distribution blocks
  • Electrical Testing: 100% electrical continuity testing and insulation resistance verification before dispatch
  • Mounting: Designed for integration with fuse box housing and cab panel mounting points
Material & Performance Features
The wiring harness is manufactured utilizing premium-grade cable materials certified to UL, CE, VDE, ISO9001, and RoHS international standards, ensuring exceptional electrical safety and environmental compliance. Conductors feature high-purity oxygen-free copper with precision tin plating, delivering superior electrical conductivity and corrosion resistance in harsh operating environments exposed to hydraulic fluids, diesel spillage, abrasion, and weather elements.
The harness features advanced insulation materials including heat-resistant silicone rubber and cross-linked polyethylene (XLPE), providing exceptional resistance to abrasion, chemical exposure, and extreme temperature fluctuations. The jacket materials are formulated to resist diesel fuel, ozone cracking, and UV degradation, maintaining flexibility above -30°C while preventing embrittlement in freezing temperatures prevalent in extreme operating conditions.
Interchange Part Numbers
342-2890; 3422890; CA3422890
WESPC Wiring Harness 342-2890 for hydraulic excavators

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Company Wespc (Dongguan) Tech Co., Ltd.
Location Room 803-804, Building G1, Tian'an Cyber Park, Nancheng Street, Dongguan City, China 523080
Contact Person Martin

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