| Specification Category | Details |
|---|---|
| Compatible Machine Models | Doosan DX300LC, DX300LL, DX340LC Excavators |
| COGENG Part Number | CG-DX300-MWH03 |
| Replaces OEM Part Number | 310207-01704A |
| Product Name | Main Wiring Harness Assembly |
| Application | Central Harness for Engine ECU, Sensor Arrays, Control Solenoids, and Monitoring Systems |
| Wire Specifications | High-Temperature XLPO Insulation, Oil & Abrasion Resistant |
| Connector Type | OEM-Specified, Sealed Connectors (IP67 Rated Equivalents) |
| Quality Assurance | 100% Continuity, Insulation Resistance, and Hi-Pot (Dielectric Strength) Tested |
| Warranty | 2,000-Hour Limited Warranty |
| NO | Number | Name | Qty |
| 10 | 65.97460-0008 | BAND;TENSION | 9 |
| 10 | 310101-00172 | TIE,CABLE | 6 |
| 20 | 65.29101-6137C | WIRE;ELECTIRC | 1 |
| 65.29101-6137E | WIRE;ELECTIRC | 1 | |
| 310208-00439 | WIRE,ELECTRIC | 1 | |
| 30 | 06.01923-2911 | BOLT ASS'Y M6X16 | 2 |
| 40 | 65.29101-6155 | WIRE;ELECTIRC | 1 |
| 65.29101-6155A | WIRE;ELECTIRC | 1 | |
| 65.29101-6155C | WIRE;ELECTIRC | 1 | |
| 310207-01705 | HARNESS | 1 | |
| 310207-04024 | HARNESS,ENGINE | 1 | |
| 50 | 65.29150-0005 | BRACKET;HARNESS | 1 |
| 60 | 06.16731-2107 | WASHER | 1 |
| 70 | 06.11063-8214 | NUT | 1 |
| 80 | 65.97401-5024 | CLIP;PIPE | 1 |
| 124-00209D4 | CLIP | 1 | |
| 90 | 06.15010-2311 | WASHER | 1 |
| 100 | 06.16731-2107 | WASHER | 1 |
| 110 | 06.11063-8214 | NUT | 1 |
| 120 | 06.01923-3110 | BOLT ASS'Y M8X12 | 1 |
| 130 | 65.90201-0128 | BOLT;STUD | 1 |
| 140 | 06.16731-2107 | WASHER | 1 |
| 150 | 310207-01704A | HARNESS,ENGINE | 1 |
| 65.29101-6197 | WIRE;ELECTIRC | 1 | |
| 65.29101-6211 | WIRE;ELECTIRC | 1 | |
| 65.29101-6211A | WIRE;ELECTIRC | 1 | |
| 65.29101-6211C | WIRE;ELECTIRC | 1 | |
| 65.29101-6156 | WIRE;ELECTIRC | 1 | |
| 160 | 65.97401-5024 | CLIP;PIPE | 1 |
| 170 | 65.97401-0196 | CLIP;PIPE | 10 |
| 180 | 06.01923-3110 | BOLT ASS'Y M8X12 | 5 |
| 190 | 06.15010-2311 | WASHER | 4 |
| 200 | 06.16731-2107 | WASHER | 5 |
| 210 | 06.11063-8214 | NUT | 5 |
| 220 | 65.09440-5005 | BRACKET | 1 |
| 230 | 06.11063-9216 | NUT;HEX. M12X1.5 | 1 |
| 250 | 65.90201-0122 | BOLT;STUD | 1 |
| 260 | 06.16731-2108 | WASHER;SPRING | 1 |
| 270 | 06.15010-2312 | WASHER;PLAIN | 1 |
Q: What are the symptoms of a failing engine wiring harness on a Doosan DX300LC or DX340LC?
A: Common symptoms include intermittent engine performance issues, engine stalling or failure to start, multiple diagnostic trouble codes, erratic sensor readings on the monitor panel, unresponsive throttle control, CAN bus communication errors between the engine ECU and machine controller, or specific engine functions not responding. Engine harness degradation is often accelerated by high heat exposure in the engine compartment, vibration, and oil or fuel contamination at connector joints.
Q: Is this harness a direct plug-and-play replacement?
A: Yes, the COGENG 310207-01704A engine harness is manufactured to exact OEM specifications for connector types, pin assignments, wire gauge, and routing length. It is a direct plug-and-play replacement requiring no wire splicing, soldering, or modifications when installed on compatible Doosan DX300LC or DX340LC excavators.
Q: What makes this a "premium" engine wiring harness?
A: The COGENG premium engine harness is built using high-grade materials engineered for the demanding conditions of the engine compartment. Key features include high-temperature resistant insulation rated for engine bay heat levels, heavy-duty protective loom covering, corrosion-resistant connector terminals, and reinforced stress points at all connector junctions for enhanced durability and extended service life.
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