| Technical Feature / Attribute | Product Specification Details |
| Brand / Manufacturer | COGENG |
| Part Number (MPN) | 208-06-71812 (Cross-ref: 2080671812, 208-06-71811, 208-06-71113, 208-06-71112) |
| Product Category | Main Frame & Engine/Pump Control Wiring Harness Assembly |
| Primary Machine Application | Komatsu PC400-7 & Komatsu PC450-7 Hydraulic Excavators |
| Engine Application | Komatsu SAA6D125E-3 / SAA6D125E-5 Engine |
| Condition | 100% Brand New, Direct OEM Spec Replacement |
| Conductor Core Material | High-Conductivity Electrolytic Annealed Copper Wire (Multi-Strand) |
| Insulation & Outer Armor | Flame-retardant cross-linked polyethylene (XLPE), corrugated split loom & nylon braiding |
| Connector & Plug Types | Heavy-duty, IP67/IP68 dustproof and waterproof 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 208-06-71812 Wiring Harness (interchangeable with superseding cross-reference part numbers 208-06-71811, 208-06-71113, and 208-06-71112) is a premium main frame and pump/engine control electrical assembly engineered specifically for Komatsu PC400-7 and PC450-7 hydraulic excavators equipped with the SAA6D125E-5 engine. Serving as a central nervous system within high-capacity earthmoving equipment, this harness routes critical power, signal, and ground feeds between the operator cabin display, central controller (ECU/PMC), main hydraulic pump solenoid valves, pressure transducers, and engine bay sensors.
Heavy-duty mining, quarrying, and bulk excavation expose machines like the PC400-7 and PC450-7 to intense engine bay heat, continuous chassis vibration, dust, and chemical contamination from hydraulic fluid and diesel. Over time, original factory wiring suffers from insulation embrittlement, copper conductor fatigue, micro-cracks, and connector pin oxidation. Common failure symptoms include erratic monitor readouts, delayed hydraulic pump displacement, electronic throttle faults, engine misfires, and unexpected machine downtime.
Manufactured to match exact OEM specifications, the COGENG 208-06-71812 wiring harness delivers a direct plug-and-play solution. Built with high-conductivity copper cabling, flame-retardant outer sleeving, and factory-matched waterproof sealed connectors, this assembly eliminates signal degradation, protects central electronic controllers against short circuits, and restores full operational performance on demanding job sites.
Main Chassis Cable Trunk: Heavy-gauge multi-strand copper wiring designed for main power distribution, ground loops, and chassis frame routing.
Hydraulic Pump & Solenoid Control Branch: Pre-terminated leads featuring heavy-duty waterproof plugs for pump proportional solenoid valves, displacement sensors, and pilot shut-off solenoids.
Engine Bay Sensor & Control Leads: Dedicated connections for SAA6D125E-5 engine oil pressure switches, coolant temperature senders, fuel injection control interfaces, alternator charging terminals, and starter relay triggers.
Cab & Controller Interconnect Plugs: High-density multi-pin OEM-style connectors designed to plug directly into the main cabin harness and central electronic controller.
IP67 Waterproof Sealed Connectors: Heavy-duty connector plugs equipped with internal silicone weather seals and positive locking tabs to seal out mud, water, and dirt.
Protective Outer Armor & Hardware: Abrasion-resistant corrugated split loom, heat-shrink reinforced branch junctions, and pre-installed rubber mounting grommets and chassis clips.
========================================================================================
COGENG 208-06-71812 WIRING HARNESS ARCHITECTURE
========================================================================================
[ Cab Harness Junction & Controller Interface ]
|
|-- Central Power & Relay Feeds
|-- Monitor Panel & Throttle Interface
|
+-----------------+-----------------+
| |
[ Engine Bay Branch Trunk ] [ Hydraulic Pump & Frame Trunk ]
| |
+--------------+--------------+ +--------------+--------------+
| | | |
(Engine Sensors) (Starter & Alt) (Main Pump Solenoids) (Pressure Transducers)
- Oil Pressure Switch - Starter B+ - TVC Solenoid Valve - Main Delivery Sensor
- Water Temp Sender - Alternator D+ - Speed Control Sol. - Pilot Cutoff Solenoid
- Fuel Control Solenoid - Chassis Ground - Angle Sensors - Travel / Swing Alarm
Komatsu PC400-7
Komatsu PC400LC-7
Komatsu PC450-7
Komatsu PC450LC-7
(Equipped with Komatsu SAA6D125E-3 or SAA6D125E-5 Diesel Engines)
Dash-7 Series Specificity: The 208-06-71812 harness is specifically tailored for Komatsu Dash-7 generation excavators (-7 series). It is not compatible with Dash-6 or Dash-8 models due to differences in engine controller pinouts and solenoid connector layouts.
Part Number Interchangeability: Part numbers 208-06-71812 (2080671812), 208-06-71811, 208-06-71113, and 208-06-71112 serve as direct cross-references sharing matching plug layouts for seamless interchangeability. Always verify your machine serial number prior to ordering.
Circuit Safety Check: Before installing the new wiring harness, switch off the main battery isolator and check for existing short circuits on external components (such as damaged solenoid coils) to protect 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 208-06-71812 to |
| verify branch lengths, pin count & plug styles. |
+---------------------------------------------------------------------------------------+
| [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: Is part number 208-06-71812 fully interchangeable with 208-06-71811, 208-06-71113, and 208-06-71112?
A: Yes, 208-06-71812 serves as the direct updated version and cross-reference for 208-06-71811, 208-06-71113, and 208-06-71112 with full plug-and-play compatibility.
Q2: Are all branch connectors protected against water and dust?
A: Yes, all external connection points feature heavy-duty IP67/IP68 rubber-sealed plugs designed to withstand dust, heavy mud, and high-pressure site washdowns.
Q3: Can I receive pre-shipment photos of the harness?
A: Yes! Pre-shipment photos and testing verification videos can be provided upon request prior to dispatch to confirm part numbers and connector layouts.
*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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