| Technical Feature / Attribute | Product Specification Details |
| Brand / Manufacturer | COGENG |
| Part Number (MPN) | 0003647 |
| Product Category | External / Main Frame Wiring Harness Assembly |
| Primary Machine Application | Hitachi ZX110, ZX120, ZX130 Hydraulic Excavators |
| Series Generation | ZAXIS Series (ZAX110, ZAX120, ZAX130) |
| Condition | 100% Brand New, Direct OEM Spec Aftermarket Replacement |
| Conductor Core Material | High-Conductivity Electrolytic Annealed Copper (Multi-Strand) |
| Insulation & Outer Armor | Flame-retardant cross-linked polyethylene (XLPE) with corrugated split loom & nylon braiding |
| Connector & Plug Types | Heavy-duty, IP67/IP68 waterproof and dustproof sealed multi-pin connectors |
| Operating Voltage | 24V DC Heavy Machinery Electrical System |
| Operational Temperature | -40°C to +125°C (-40°F to +257°F) continuous thermal tolerance |
| Quality Control & Testing | 100% Automated Continuity, Resistance, and Thermal Burn-in Bench Tested |
The COGENG 0003647 External Wiring Harness is a high-performance main frame and external electrical wire assembly engineered specifically for Hitachi ZX110, ZX120, and ZX130 hydraulic excavators. Serving as a critical pathway within the machine's electrical infrastructure, this harness routes vital control and feedback signals between the cabin controller, external main hydraulic pump solenoids, pressure sensors, pilot valves, and engine bay components.
Utility and mid-size excavators like the ZX110, ZX120, and ZX130 are subjected to rigorous work environments, exposing external wiring to relentless engine heat, persistent mechanical vibration, dirt, moisture, and chemical exposure from hydraulic fluid and diesel. Over time, original factory wiring can suffer from conductor fatigue, cracked insulation, and corroded connector pins. These failure points cause intermittent sensor fault codes, electronic pump control lag, erratic engine throttle responses, or total electrical failure.
The COGENG 0003647 wiring harness is manufactured as a direct plug-and-play replacement matching factory OEM specifications. Built with heavy-duty multi-strand copper wiring, flame-retardant protective jacketing, and heavy-duty waterproof sealed connectors, this harness eliminates electrical resistance issues and protects sensitive electronic control units (ECU/PVC) from voltage fluctuations. Upgrading to the COGENG 0003647 restores precise signal transmission, decreases unexpected downtime, and maintains reliable job site productivity.
Main External Trunk Cable: Thick-gauge copper wiring designed for power transmission, signal grounding, and primary frame distribution.
Hydraulic Pump & Solenoid Control Leads: Pre-terminated branch leads with waterproof plugs for main hydraulic pump proportional valves, pressure transducers, and pilot cut-off solenoids.
Engine Bay Sensor & Control Branch: Terminals for oil pressure switches, coolant temperature senders, starter relay leads, and alternator connections.
Cab & Main Controller Interconnect Interface: Heavy-duty multi-pin connectors configured to mate directly with the internal cab wiring interface and main control unit.
IP67 Waterproof Sealed Connectors: OEM-style plugs featuring internal silicone weather seals and positive locking tabs to seal out mud, water, and debris.
Protective Outer Tubing & Mounting Hardware: Abrasion-resistant corrugated split tubing, heat-shrink reinforced junction points, and factory-positioned mounting grommets and clips.
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COGENG 0003647 WIRING HARNESS ARCHITECTURE
========================================================================================
[ Cab Harness Junction & ECU Controller Interface ]
|
|-- Central Power & Relay Feeds
|-- Monitor Panel & Throttle Control
|
+-----------------+-----------------+
| |
[ Engine Bay Branch Trunk ] [ Hydraulic Pump & Frame Trunk ]
| |
+--------------+--------------+ +--------------+--------------+
| | | |
(Engine Sensors) (Starter & Alt) (Main Pump Solenoids) (Pressure Transducers)
- Oil Pressure Switch - Starter B+ - Proportional Valve - Main Delivery Sensor
- Water Temp Sender - Alternator D+ - Speed Control Sol. - Pilot Cutoff Solenoid
- Fuel Shutoff Solenoid - Chassis Ground - Angle Sensors - Travel / Swing Horn
Hitachi ZX110 / ZAX110
Hitachi ZX120 / ZAX120
Hitachi ZX130 / ZAX130
Hitachi ZX110-E / ZX120-E Series
External vs. Internal Cab Harness: The 0003647 is the external main frame wiring assembly. If your machine is experiencing internal operator cabin or monitor panel wiring damage, please verify whether you need the corresponding internal cabin harness in addition to this external unit.
Model Sub-Series & Serial Numbers: Machine updates over production cycles may introduce minor plug profile or pinout changes. Always cross-reference your machine serial number and original harness part number with our technical support team prior to purchasing.
Circuit Safety Check: Before connecting the new harness, verify that the main battery switch is turned off and ensure existing electrical shorts on components (such as shorted solenoid coils) are resolved to avoid damaging the new assembly.
+---------------------------------------------------------------------------------------+
| INSTALLATION WORKFLOW STEPS |
+---------------------------------------------------------------------------------------+
| [STEP 1: DISCONNECT POWER] ---> Shut off main battery isolator & disconnect (-) |
| terminal to eliminate risk of electrical short. |
+---------------------------------------------------------------------------------------+
| [STEP 2: LABEL & REMOVE] ---> Tag all existing connections on engine and pump, |
| unbolt chassis clamps, and extract old harness. |
+---------------------------------------------------------------------------------------+
| [STEP 3: BENCH COMPARISON] ---> Lay out old harness beside COGENG 0003647 to verify |
| branch lengths, pin count, and connector profiles. |
+---------------------------------------------------------------------------------------+
| [STEP 4: ROUTE & SECURE] ---> Route new harness along factory chassis channels; |
| seat rubber grommets firmly in frame pass-throughs. |
+---------------------------------------------------------------------------------------+
| [STEP 5: PLUG & CLICK] ---> Connect engine sensors, hydraulic solenoids, and |
| ECU connectors until locking tabs click tightly. |
+---------------------------------------------------------------------------------------+
| [STEP 6: SYSTEM TEST] ---> Reconnect battery, turn ignition key to ON position,|
| check monitor status, and perform operational test. |
+---------------------------------------------------------------------------------------+
| Detail | Description |
| Shipping Methods | By Air, By Sea, By Express (FedEx, UPS, DHL, TNT, etc.). The specific arrangement will be based on the cargo situation and destination. |
| Estimated Delivery Time | Based on the shipping time of the logistics company. The arrival time shown by the carrier's tracking system shall prevail. |
| Packing | Inner: PP bag. Outer: Export-grade carton box with protective foam. |
| Payment Terms | Western Union, L/C (Letter of Credit), T/T (Telegraphic Transfer), MoneyGram, D/A (Documents against Acceptance), D/P (Documents against Payment) |
| Policy Point | Terms |
| Merchant Return Policy | Products shipped are not returnable or exchangeable. |
| Quality Guarantee | Every board and harness is function-tested and burned-in before shipment to ensure it is not Dead on Arrival (DOA). |
| Pre-Shipment Confirmation | Photos and testing videos can be provided upon request before shipment to confirm correct part numbers and operational condition. |
Q1: Does this harness fit all Hitachi ZX110, ZX120, and ZX130 series excavators?
A: It is designed for standard ZAXIS series ZX110, ZX120, and ZX130 models. Please provide your machine serial number to confirm exact match for mid-generation variations.
Q2: Are the connectors protected against water and dust?
A: Yes, all external branch plugs feature heavy-duty IP67/IP68 weather seals to protect electrical contacts from water, dirt, and oil contamination.
Q3: Can I receive pre-shipment photos of the harness to verify connectors?
A: Absolutely. Pre-shipment photos and testing videos can be provided upon request prior to dispatch to confirm correct part numbers and connector physical specs.
Sales Price: Please contact COGENG sales customer service for specific prices and wholesale bulk discounts.
Shipping Method: The specific arrangement will be based on the cargo situation, parcel weight, and destination country.
Estimated Delivery Time: It is based on the shipping time of the logistics company, and the arrival time shown by the carrier's tracking system shall prevail.
Merchant Return Policy: The products shipped are not returnable or exchangeable. Please verify part numbers carefully before ordering.
For pricing, bulk orders, or technical support, contact your COGENG supplier today.
Please provide your machine model and serial number for compatibility verification.
✅ Direct OEM Replacement.
✅ Durable — Built for Job Site Conditions.
✅ In Stock — Fast Shipping Worldwide.
Contact COGENG
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