| Parameter | Specification |
|---|---|
| COGENG Part Number | VOE20718807 (20718807) |
| OEM Equivalent | Volvo VOE20718807, Volvo 20718807 |
| Product Type | Wiring Harness Assembly |
| Application | Main machine electrical system |
| Harness Type | Engine / Chassis / Cab harness (varies by model) |
| Compatible Models | Select Volvo excavators, wheel loaders, and articulated haulers |
| Brand | Part Number |
|---|---|
| COGENG | VOE20718807, 20718807 |
| Volvo | VOE20718807, 20718807 |
| Interchange | 20718808, 20718809, 20718810, VOE20718808 |
| Parameter | Specification |
|---|---|
| System Voltage | 24V DC (Volvo standard) |
| Current Capacity | Up to 60A (main power circuits) |
| Wire Gauge Range | 16AWG - 20AWG (signal) / 10AWG - 14AWG (power) / 4AWG-6AWG (battery) |
| Insulation Resistance | ≥100MΩ @ 500V DC |
| Dielectric Strength | 1500V AC/60s No Breakdown |
| Voltage Drop | <0.5V @ rated load |
| Temperature Rating | -40°C to +125°C (engine bay) / -40°C to +105°C (cab/chassis) |
| NO | Number | Name | Qty |
| 1 | VOE20718807 | Wire harness | 1 |
| 2 | VOE23807658 | Sensor | 1 |
| 3 | VOE20459017 | Shim | 1 |
| 4 | VOE20459015 | Screw | 1 |
| 5 | VOE20524936 | Pressure sensor | 1 |
| 6 | VOE20450728 | Bolt | 1 |
| 7 | VOE23059821 | Guard plate | 1 |
| 8 | VOE20715095 | Closure | 1 |
| 9 | VOE21531072 | Temperature sensor | 1 |
| 10 | VOE13947621 | Plane gasket | 1 |
| 11 | VOE20450683 | Adapter | 1 |
| 12 | VOE13947628 | Plane gasket | 1 |
| 13 | VOE21291011 | Pressure sensor | 1 |
| 14 | VOE13947621 | Plane gasket | 1 |
| 15 | VOE20450707 | Tachometer | 1 |
| 16 | VOE20450694 | Screw | 1 |
| 17 | VOE20577135 | ECU | 1 |
| 18 | Bracket | 1 | |
| 19 | VOE20459022 | Nut | 1 |
| 20 | VOE20450704 | Connector | 1 |
| 21 | VOE60110707 | Flangescrew | 2 |
| 22 | VOE4881440 | Cable tie | 14 |
| 23 | VOE21531072 | Temperature sensor | 1 |
| 24 | VOE13947621 | Plane gasket | 1 |
| 25 | VOE20591964 | Sensor | 1 |
| 26 | VOE20700252 | Bracket | 1 |
| 27 | VOE20485291 | Screw | 2 |
Q: What are symptoms of a failing main wiring harness on a Volvo EC210B?
A: Common signs on B-Series Volvo excavators include intermittent CAN bus communication errors, multiple warning lights illuminating on the display, specific hydraulic functions not responding, erratic gauge readings, or the machine failing to start. The heat and vibration in the engine bay and main frame accelerate harness insulation degradation over time.
Q: Does the VOE20718807 harness fit all three models: EC210B, EC240B, and EC290B?
A: Yes, the VOE20718807 main wiring harness is a direct fit for Volvo EC210B, EC240B, and EC290B excavators. It is a common main chassis harness shared across these B-Series platforms. Verify the part number on your original harness tag to confirm exact fitment.
Q: Why replace the entire main harness instead of repairing damaged sections?
A: On B-Series machines, the wiring insulation becomes brittle and connector seals degrade throughout the entire harness due to age, heat, and exposure. Patching one damaged section often leads to another failure soon after, causing repeated downtime. A complete COGENG harness restores the entire electrical system to OEM specification for long-term reliability.
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