The COGENG 310207-00274B is a premium direct OEM replacement wiring harness set specifically engineered for Doosan DX300 and DX340 excavators. This comprehensive main harness connects and powers critical machine components including the main controller (ECU/VCU), engine systems, cab electronics, hydraulic controls, lighting, and safety systems. Manufactured to meet or exceed original Doosan specifications, this durable, plug-and-play harness set ensures reliable electrical performance, optimal signal integrity, and long service life in demanding construction and excavation applications.
| Specification Category | Details |
|---|---|
| Compatible Applications | Doosan D-Series Excavators (Compatible with models using listed OEM numbers) |
| COGENG Part Number | CG-DOOSAN-EWH02 |
| Replaces OEM Part Numbers | 310207-00274B, 310207-00274C, 310207-00274E, 310207-00274K, 310207-00274M, 310207-00274N |
| Product Name | Universal Engine Wiring Harness Assembly |
| Application | Primary Harness for Engine ECU, Sensor Arrays, and Actuators |
| Wire Specifications | High-Temperature XLPO Insulation, Oil & Fuel Resistant |
| Connector Type | OEM-Specified, Sealed Connectors (IP67 Equivalent) |
| Quality Assurance | 100% Continuity, Insulation Resistance, and Short-Circuit Tested |
| Warranty | 2,000-Hour Limited Warranty |
| NO | Number | Name | Qty |
| 1 | K1010981 | PANEL;GAUGE | 1 |
| 1 | K1010981B | PANEL;GAUGE | 1 |
| 1 | 300426-00192 | PANEL,GAUGE | 1 |
| 1 | 300426-00192A | PANEL,GAUGE | 1 |
| 1-1 | K1011744 | METER;SPEED | 1 |
| 1-1 | 300426-00190 | PANEL,GAUGE | 1 |
| 1-2 | K1011745 | METER;TACHO | 1 |
| 1-2 | K1045382 | DISPLAY | 1 |
| 1-2 | 970210-00053 | DISPLAY | 1 |
| 1-3 | 4539-6036 | DISPLAY | 1 |
| 1-3 | K1045382 | DISPLAY | 1 |
| 1-3 | 110446-00266 | BRACKET,GUIDE | 1 |
| 1-4 | K1007136 | GAUGE;FUEL | 1 |
| 1-5 | K1007137 | GAUGE;WATER TEMP | 1 |
| 1-6 | K1007138 | GAUGE;T/M OIL TEMP | 1 |
| 1-7 | 515-00012A | BULB | 17 |
| 1-11 | K1006131 | PLATE;CLEAR | 1 |
| 2 | S3450863 | SCREW | 4 |
| 3 | S5100203 | WASHER | 4 |
| 4 | S5000213 | WASHER | 4 |
| 5 | K1001858A | SWITCH,STARTER | 1 |
| 5-1 | K1009605A | KEY,STARTER | 1 |
| 6 | 530-00150 | HARNESS;STARTER SWITCH | 1 |
| 7 | K1006290 | SWITCH;ROTARY | 1 |
| 8 | K1006356 | KNOB | 1 |
| 9 | 2549-9138 | SWITCH;ROCKER | 1 |
| 9 | 301423-00055 | SWITCH,ROCKER | 1 |
| 9-1 | K9000353 | LAMP;PILOT | 1 |
| 10 | 2190-2036D2 | INSERT;HAZARD | 1 |
| 11 | 2549-9109 | SWITCH;LAMP | 1 |
| 11 | 301423-00051 | SWITCH,ROCKER | 1 |
| 11-1 | K9000353 | LAMP;PILOT | 1 |
| 12 | 2190-2036D24 | INSERT;LAMP | 1 |
| 13 | 2549-9098 | SWITCH;ROCKER | 1 |
| 13 | 301423-00058 | SWITCH,ROCKER | 1 |
| 13-1 | K9000353 | LAMP;PILOT | 1 |
| 14 | 2190-2036D5 | INSERT;WORKING LAMP | 1 |
| 15 | 2549-9109 | SWITCH;LAMP | 1 |
| 15 | 301423-00051 | SWITCH,ROCKER | 1 |
| 15-1 | K9000353 | LAMP;PILOT | 1 |
| 16 | 2190-2036D26 | INSERT;SPARE | 1 |
| 16 | 2190-2036D20 | INSERT;REAR WORKING LAMP | 1 |
| 17 | 2549-9129 | SWITCH;REAR WIPER/WASHER | 1 |
| 17 | 301423-00054 | SWITCH,ROCKER | 1 |
| 17-1 | K9000353 | LAMP;PILOT | 1 |
| 18 | 2190-2036D18 | INSERT;REAR WIPER/WASHER | 1 |
| 19 | 2549-9098 | SWITCH;ROCKER | 1 |
| 19 | 301423-00058 | SWITCH,ROCKER | 1 |
| 19-1 | K9000353 | LAMP;PILOT | 1 |
| 20 | 2190-2036D17 | INSERT;PILOT CUT OFF | 1 |
| 21 | 2549-9098 | SWITCH;ROCKER | 1 |
| 21 | 301423-00058 | SWITCH,ROCKER | 1 |
| 21-1 | K9000353 | LAMP;PILOT | 1 |
| 22 | 2190-2036D16 | INSERT;PARKING BRAKE | 1 |
| 23 | 2549-9098 | SWITCH;ROCKER | 1 |
| 23 | 301423-00058 | SWITCH,ROCKER | 1 |
| 23-1 | K9000353 | LAMP;PILOT | 1 |
| 24 | 2190-2036D15 | INSERT;T/M CUT OFF | 1 |
| 25 | 2549-9098 | SWITCH;ROCKER | 1 |
| 25 | 301423-00058 | SWITCH,ROCKER | 1 |
| 25-1 | K9000353 | LAMP;PILOT | 1 |
| 26 | 2190-2036D29 | INSERT;MIRROR HEAT RAYS | 1 |
| 27 | 2549-9098 | SWITCH;ROCKER | 1 |
| 27 | 301423-00058 | SWITCH,ROCKER | 1 |
| 27-1 | K9000353 | LAMP;PILOT | 1 |
| 28 | 2190-2584D20 | INSERT;REVERSE FAN | 1 |
| 29 | 2549-9098 | SWITCH;ROCKER | 1 |
| 29 | 301423-00058 | SWITCH,ROCKER | 1 |
| 29-1 | K9000353 | LAMP;PILOT | 1 |
| 30 | 2190-2584D9 | INSERT;WARNING CHECK | 1 |
| 31 | 2621-9002 | COVER | 9 |
| 31 | 2621-9002 | COVER | 8 |
| 32 | 527-00006 | SOCKET;12V POWER | 1 |
| 33 | 545-00001 | LIGHTER;CIGAR | 1 |
| 33 | 300730-00006 | LIGHTER,CIGAR | 1 |
| 34 | 2528-9040 | METER;HOUR | 1 |
| 34 | 800224-00011 | METER,HOUR | 1 |
| 35 | 530-00434B | HARNESS,HOUR METER | 1 |
| 36 | 528-00039 | CLOCK | 1 |
| 36 | 528-00039A | CLOCK | 1 |
| 37 | K1011896 | PEDAL;ACCELERATOR | 1 |
| 37 | K1045493 | PEDAL;ACCELERATOR | 1 |
| 38 | S0508853 | BOLT | 2 |
| 39 | S5102503 | WASHER | 2 |
| 40 | S5010513 | WASHER | 2 |
| 41 | K1008402 | HARNESS;CABIN | 1 |
| K1008402B | HARNESS;CABIN | 1 | |
| K1008402C | HARNESS;CABIN | 1 | |
| K1008402E | HARNESS;CABIN | 1 | |
| 41 | K1051860 | HARNESS;CABIN | 1 |
| 41 | 310207-00274B | HARNESS,CABIN | 1 |
| 310207-00274C | HARNESS,CABIN | 1 | |
| 310207-00274E | HARNESS,CABIN | 1 | |
| 310207-00274G | HARNESS,CABIN | 1 | |
| 310207-00274K | HARNESS,CABIN | 1 | |
| 310207-00274M | HARNESS,CABIN | 1 | |
| 310207-00274N | HARNESS,CABIN | 1 | |
| 43 | K1010325 | HARNESS;JOINT GAUGE PANEL | 1 |
| 44 | S0511353 | BOLT | 1 |
| 44 | 120106-00701 | BOLT | 1 |
| 45 | S5102603 | WASHER | 1 |
| 46 | S5010613 | WASHER | 1 |
| 47 | S3450833 | SCREW | 4 |
| 48 | S5100203 | WASHER | 4 |
| 49 | K1010326 | BRACKET;CONNECTOR | 1 |
| 49 | K1010326A | BRACKET;CONNECTOR | 1 |
| 49 | K1043863 | BRACKET;CONNECTOR | 1 |
| 50 | 2197-1660 | BRACKET | 4 |
| 50 | 2197-1660 | BRACKET | 3 |
| 51 | 2197-1661 | BRACKET | 13 |
| 51 | 2197-1661 | BRACKET | 8 |
| 52 | K1001029 | BOLT | 21 |
| 52 | K1001029 | BOLT | 15 |
| 52 | K1001029 | BOLT | 13 |
| 54 | 2121-1305 | NUT | 6 |
| 54 | 2121-1305 | NUT | 5 |
| 54 | 2121-1305 | NUT | 6 |
| 55 | 124-00208D6 | CLIP | 1 |
| 56 | 124-00208D5 | CLIP | 4 |
| 57 | 2549-9098 | SWITCH;ROCKER | 1 |
| 57 | 301423-00058 | SWITCH,ROCKER | 1 |
| 57-1 | K9000353 | LAMP;PILOT | 1 |
| 58 | 2190-2584D25 | INSERT;ECONOMIC | 1 |
| 59 | 124-00208D2 | CLAMP | 1 |
| 60 | 2128-1209D1 | CLAMP,METAL | 2 |
| 61 | 124-00208D5 | CLIP | 2 |
| 63 | 2120-2166D8 | BOLT | 2 |
| 64 | 530-00067 | HARNESS | 1 |
| 66 | 120402-00439 | CLIP | 7 |
| 67 | 120106-00596 | BOLT | 2 |
| 101 | K1013232 | STEREO;CAR | 1 |
| Model | Series | Engine | Application |
|---|---|---|---|
| DX300 | DX Series | Doosan DL08 | Main harness |
| DX300LC | DX Series | Doosan DL08 | Main harness |
| DX300-5 | Dash 5 | Doosan DL08 | Main harness |
| DX300LC-5 | Dash 5 | Doosan DL08 | Main harness |
| DX300-7 | Dash 7 | Doosan DL08 | Main harness |
| DX300LC-7 | Dash 7 | Doosan DL08 | Main harness |
| Model | Series | Engine | Application |
|---|---|---|---|
| DX340 | DX Series | Doosan DL08 | Main harness |
| DX340LC | DX Series | Doosan DL08 | Main harness |
| DX340-5 | Dash 5 | Doosan DL08 | Main harness |
| DX340LC-5 | Dash 5 | Doosan DL08 | Main harness |
| DX340-7 | Dash 7 | Doosan DL08 | Main harness |
| DX340LC-7 | Dash 7 | Doosan DL08 | Main harness |
| Engine Model | Displacement | Cylinders | Fuel System | Found In |
|---|---|---|---|---|
| Doosan DL08 | 7.6L | 6-cylinder | Common Rail | DX300, DX340 |
Doosan Dealer Portal (login required for dealers/techs) – search by part number 310207-00274B
COGENG official – contact their technical support; they often supply installation sheets
Doosan online parts catalogs (e.g., Doosan Store, AVS, or aftermarket sites like Mascus, Lifting365, AVSpares) – search "310207-00274B wiring harness"
A harness for DX300/DX340 will generally include:
| Sub-assembly | Connectors / Routes |
|---|---|
| Engine harness segment | Engine ECM, sensors (crank, cam, oil pressure, temp, fuel injectors) |
| Main chassis harness | Battery positive/negative, starter, alternator, main fuse box |
| Cab harness segment | Monitor panel, joysticks, switches, HVAC, wiper, lamps |
| Swing / upper structure harness | Swing motor brake, swing encoder, rotary union pass-through |
| Lower / travel harness | Travel motors (left/right), travel alarm, track sensors |
| Attachment / implement harness | Boom, arm, bucket angle sensors, attachment control valves |
For physical routing, a typical decomposition sequence is:
Battery disconnect → remove negative terminal
Old harness removal – label connectors by location
Install main chassis harness – start from battery/fuse box outward
Engine harness – route along engine left side (viewed from cab), secure with clips
Upper structure (swing) harness – pass through rotary union opening
Cab harness – pull through firewall grommet, secure behind right console
Lower travel harness – route along center frame, protected in conduit
Attachment harness – along boom foot to tip (use zip ties on existing brackets)
⚠️ Critical: Pinouts vary by machine serial number break. Always verify with the provided pinout sheet before powering on.
Search the exact part number 310207-00274B on PartSaver or Aftermarket Excavator Parts sites – some have public PDF previews.
Doosan serial number ranges:
DX300 – typically DX300LCA (Korea) or DX300LC-5
DX340 – DX340LC-3 / DX340LCA-5
Harnesses often differ by dash level (-3, -5, -7).
If you can provide your machine’s serial number and dash level (e.g., DX340LC-5), I can help you locate the correct OEM part and cross-reference the decomposition layout from public resources.
Would you like a text-based connector pinout list for that harness based on common Doosan schematics, or help finding a dealer site that shows the exploded view?
Frequently Asked QuestionsQ: What Doosan models use the 310207-00274 wiring harness set?
A: The COGENG OEM-compatible wiring harness set is a direct replacement for Doosan part numbers 310207-00274B, 310207-00274C, 310207-00274E, 310207-00274K, 310207-00274M, and 310207-00274N, designed for select Doosan excavator models where these harness part numbers are specified. The suffix letters (B, C, E, K, M, N) typically denote different revisions, updated versions, or supersessions released by Doosan. Always verify the specific part number against your machine's parts manual or original harness tag to confirm exact compatibility before ordering.
Q: What are the symptoms of a failing wiring harness on a Doosan excavator?
A: Common symptoms include intermittent electrical faults, multiple warning lights illuminated on the monitor panel, unresponsive hydraulic or engine controls, erratic gauge or sensor readings, CAN bus communication errors, specific functions not responding, or unexpected machine shutdowns. Doosan excavators rely on stable electrical connections for control module communication, and harness degradation from heat, vibration, and moisture ingress can cause widespread operational issues.
Q: What is the relationship between the different suffix letters (B, C, E, K, M, N)?
A: These suffix letters typically represent different revisions or supersessions of the same base harness part number (310207-00274), released by Doosan over the production lifecycle to incorporate design improvements or updates. The COGENG harness set is designed to be backward compatible and replace any of these part number variations. Always verify your machine's specific requirements before ordering.
Contact COGENG
📞 Phone: +86-185-2913-1515 🌐 Instagram
📧 Email: hugo@cogeng.net 🌐 Facebook：Excavator Parts Selection and Replacement Community
💬 WhatsApp +86-185-2913-1515 Facebook: Excavator Wiring Harness
💬 WeChat: +86-185-7865-1106 Facebook: Excavator Wire Harness
🌐 Website: cogeng.net Facebook: Excavator SolenoidValve
#ExcavatorWiringHarness #ExcavatorThrottleMotor #ExcavatorSolenoidValve #ExcavatorSealKit
