| Category | Specification |
|---|---|
| COGENG Part Number | CG-HIT-0005997 |
| OEM Reference | 0005997 |
| Compatible Models | ZX240-3, ZX270-3, ZX280LC-3 |
| Machine Weight Range | 24-28 Ton Excavators |
| Configuration Support | Standard & Long Undercarriage |
| Wire Insulation | Oil-Resistant XLPE |
| Connector Rating | IP67 (Waterproof & Dustproof) |
| Temperature Range | -40°C to 125°C |
| Voltage Rating | 24V DC System |
| Generation | Hitachi ZX-3 Series |
| Quality Validation | 100% Circuit Testing |
| Warranty Coverage | 18-Month Limited Warranty |
| NO | Number | Name | Qty |
| 01 | ]950010 | NUT | 5 |
| 02 | A590110 | WASHER | 5 |
| 05 | 4257159 | BRACKET | 2 |
| 06 | 4418301 | BRACKET | 1 |
| 08 | 3106886 | BRACKET | 1 |
| 09 | 4681233 | RELAY | 1 |
| 10 | J260816 | BOLT | 2 |
| 10A | ]900816 | BOLT | 1 |
| 10B | A590108 | WASHER | 1 |
| 12 | 4449250 | CLIP | 11 |
| 12 | 4449250 | CLIP | 12 |
| 13 | 4254600 | CLIP | 6 |
| 14 | 4055311 | CLIP(L=140) | 13 |
| 14 | 4055311 | CLIP(L=140) | 12 |
| 17 | 0005997 | HARNESS | 1 |
| 17A | 4423418 | FUSIBLE-LINK(65A) | 1 |
| 17B | 4315323 | FUSIBLE-LINK(45A) | 1 |
| 17C | 4690816 | CONNECTOR | 1 |
| 17D | 4690815 | CONNECTOR | 1 |
| 17E | 4681836 | HARNESS | 1 |
| 18 | J260616 | BOLT | 3 |
| 18A | ]900616 | BOLT | 1 |
| 18B | A590106 | WASHER | 1 |
| 19 | 4450494 | CLIP(22) | 3 |
| 21 | J271020 | BOLT | 29 |
| 21A | ]901020 | BOLT | 1 |
| 21B | J222010 | WASHER | 1 |
| 22 | 4190273 | CLIP(18) | 5 |
| 24 | 4190264 | CLIP(35) | 8 |
| 24 | 4190264 | CLIP(35) | 7 |
| 25 | 4190261 | CLIP(10) | 4 |
| 26 | 4190275 | CLIP(14) | 3 |
| 27 | 4190277 | CLIP(22) | 4 |
| 28 | 4192035 | CLIP(28) | 2 |
| 32 | ]450520 | SCREW | 2 |
| 34 | ]260612 | BOLT | 1 |
| 34A | ]900612 | BOLT | 1 |
| 34B | A590106 | WASHER | 1 |
| 37 | 4651944 | SENSOR | 1 |
| 38 | 4651943 | SENSOR | 1 |
| 41 | 4683654 | BRACKET | 1 |
| 42 | 4190291 | CLIP | 1 |
Complete machine power shutdown required before installation
Follow ZX-3 series specific routing diagrams
Ensure all connectors are fully engaged and locking mechanisms secured
Verify proper clearance in mid-size excavator compartments
Perform comprehensive system diagnostics after installation
The 0005997 external wiring harness is validated for the following Hitachi ZX-3 series excavator models. Always provide your complete machine serial number and engine serial number for final compatibility verification.
| Brand | Model | Machine Class | Engine |
|---|---|---|---|
| Hitachi | ZX240-3 | 24-Ton Hydraulic Excavator | Isuzu 6HK1X |
| Hitachi | ZX270-3 | 27-Ton Hydraulic Excavator | Isuzu 6HK1X |
| Hitachi | ZX280LC-3 | 28-Ton Hydraulic Excavator (Long Carriage) | Isuzu 6HK1X |
Note: Extended compatibility may include ZX250LC-3 and ZX260LC-3. Verification with machine serial number is required.
Complete External Wiring Harness Assembly (1 unit): The fully assembled, jig-built harness with all connectors, terminals, protective conduit sheathing, and identification labels pre-installed.
All Sensor and Actuator Connectors: Every branch is pre-terminated with the correct contacts, silicone wire seals, and cavity plugs in unused positions. Connector types include industrial waterproof connectors with mechanical locking.
High-Current Power Terminals: Heavy-gauge power cables terminated with appropriate ring terminals, sealed with heat shrink.
PP Bag Inner Packing and Export Carton: The harness is sealed in a PP bag with anti-static protection and flat-packed in a rigid, double-wall corrugated carton with protective foam.
Engine Configuration Verification: The ZX-3 series was produced with different engine configurations (Isuzu 6HK1X or 4HK1). The external harness routing and connector configuration may vary depending on the specific engine installed. Verify your engine model before ordering.
Serial Number Verification is Mandatory: Hitachi implemented running production changes within the ZX-3 series production run (2009-2013). Providing your complete machine serial number allows our technical team to verify the exact harness variant your machine requires.
External vs. Internal Harness: The 0005997 is the external engine wiring harness, which routes on the exterior of the engine block. It is not the internal harness that runs under the valve cover or inside the cab. Verify the specific harness location you are replacing.
Related Part Number 4681836: The 4681836 is a related part number that may represent an alternative or superseded reference for the same harness. Both numbers are used interchangeably in the aftermarket.
Professional Installation Required: Installing an external engine harness requires routing through tight engine bay clearances, around hot exhaust components, and proper securing at all mounting points. Installation should be performed by a qualified heavy equipment technician with access to Hitachi diagnostic software.
Note: This is a summarized procedural guide. Always follow the Hitachi service manual for your specific model.
Step 1: Safety Lockout and Documentation
Disconnect negative (-) and positive (+) battery cables. Lock out master disconnect switch. Photograph every aspect of the existing harness routing, documenting all P-clip locations, routing around the exhaust manifold and turbocharger, and all connector orientations.
Step 2: Old Harness Systematic Removal
Label every connector with numbered wire tags as it is disconnected. Disconnect all sensors: oil pressure, coolant temperature, fuel temperature, boost pressure, common rail pressure, camshaft position, crankshaft speed. Disconnect actuators: injector pass-through connectors, fuel pump control. Disconnect power cables from alternator and starter. Cut zip ties, release P-clips, and carefully extract the old harness.
Step 3: New Harness Visual Comparison
Uncoil the new COGENG 0005997 harness beside the old harness. Compare ECM connector, branch lengths, connector types, and ring terminal diameters. Verify every match before proceeding.
Step 4: New Harness Routing and Connection
Route harness following photographic reference. Secure loosely at all P-clip locations. Connect ECM connector first. Systematically reconnect all sensor and actuator branches. Install and torque all power ring terminals to OEM specifications. Tighten all P-clips. Install new high-temperature zip ties. Verify adequate clearance from exhaust, turbo, and all moving components.
Step 5: Power-Up and Full Functional Test
Reconnect batteries. Connect Hitachi diagnostic software. Verify no active diagnostic trouble codes. Start engine and verify immediate oil pressure. Monitor all parameters. Warm to operating temperature. Cycle all hydraulic functions. Confirm zero fault codes after complete test.
| Detail | Description |
|---|---|
| Shipping Methods | By Air: Cost-effective for medium-weight orders. By Sea: Most economical for bulk orders. By Express (FedEx, UPS, DHL, TNT): Fastest door-to-door service. Method optimized based on cargo situation and destination. |
| Estimated Delivery Time | Express: 3-5 business days. Air Freight: 8-15 days. Sea Freight: 30-45 days. Transit times are carrier-dependent. Tracking provided within one business day of dispatch. |
| Packing | Inner: PP bag with anti-static protection. Outer: Heavy-duty export-grade corrugated carton box with custom-cut protective foam. |
| Payment Terms | Western Union, L/C, T/T, MoneyGram, D/A, D/P. Standard terms: 30% T/T deposit, 70% balance before shipment. |
| Minimum Order Quantity | Acceptable Trial Order — Single unit orders welcomed. |
| Policy Point | Terms |
|---|---|
| Merchant Return Policy | All sales are final. No returns or exchanges. A wiring harness cannot be restocked once departed from our controlled environment. |
| DOA Quality Guarantee | Full replacement for manufacturing defects reported within 7 days of delivery. Harness must be in original, uninstalled condition. |
| Pre-Shipment Confirmation | We send high-resolution photos of your exact harness for written approval before dispatch. |
Q1: What are the symptoms of a failing 0005997 external harness?
A: Common symptoms include multiple unrelated fault codes appearing simultaneously, intermittent engine derate or shutdown, erratic sensor readings, visible chafing or melted insulation, green corrosion at connector backshells, and a successful "wiggle test" where manipulating the harness causes sensor values to drop out.
Q2: Will this harness fit both my ZX240-3 and ZX270-3?
A: Yes. The 0005997 harness is validated for the ZX240-3, ZX270-3, and ZX280LC-3 excavator platforms. These machines share a common electrical architecture. However, we always verify your specific machine serial number during pre-shipment confirmation.
Q3: Is this the complete machine harness or just the engine harness?
A: The 0005997 is the external engine wiring harness — it routes on the exterior of the engine block and connects the engine ECU to engine-mounted sensors and actuators. It is not the complete machine harness.
Q4: Do you accept trial orders for a single unit?
A: Yes, absolutely. We welcome trial orders for single units from first-time customers. Contact our sales team to arrange your trial order.
Q5: What certifications does COGENG hold?
A: COGENG is an ISO 9001 certified manufacturer, ensuring consistent manufacturing processes, rigorous inspection protocols, and full batch traceability.
For pricing, machine-down emergency support, trial orders, bulk quantity discounts, or pre-purchase compatibility verification, contact your COGENG supplier today.
Sales Price: Contact COGENG sales customer service directly for the most current competitive pricing. Trial orders welcome.
Shipping Method & Cost: We will quote the optimal shipping solution based on your location and urgency.
Estimated Delivery Time: Based on the selected carrier. Tracking provided within one business day of dispatch.
✅ Direct OEM Replacement — Jig-Built for Guaranteed Fit, No Cutting or Splicing Required.
✅ Hitachi ZX-3 Series Compatible — Validated for ZX240-3, ZX270-3, ZX280LC-3.
✅ ISO 9001 Certified — 100% Continuity Tested, 500 Pieces Monthly Supply.
✅ Trial Orders Welcome — Single Unit Orders Accepted.
✅ In Stock & Ready to Ship — Minimize Excavator Downtime with Immediate Worldwide Dispatch.
Critical Action: To ensure 100% compatibility, please provide your Hitachi excavator's complete model and serial number, and the engine model (Isuzu 6HK1X or 4HK1). Our technical team will cross-reference your machine's exact configuration and provide written confirmation before you order.
Merchant Return Policy: All products shipped are not returnable or exchangeable. Please complete all compatibility checks before purchase.
*shipping Details Return Sales*
Sales price:
Please contact COGENG sales customer service for specific prices.
Shipping method:
The specific arrangement will be based on the cargo situation.
Estimated delivery time:
It is based on the shipping time of the logistics company, and the arrival time shown shall prevail.
Contact details are at the bottom.
MerchantReturnPolicy:
The products shipped are not returnable or exchangeable.
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