The COGENG OEM-Compatible Wiring Harness Set is a premium-quality, direct replacement electrical wiring assembly designed for a wide range of Volvo heavy equipment, including excavators, wheel loaders, and other construction machinery. This harness set is engineered to replace Volvo OEM part numbers 20551332 and 20554258 – two commonly used wiring sections in Volvo equipment.
This universal harness set serves as a power distribution and signal transmission backbone, connecting key electrical components such as:
Fuse/Relay Panels – Power distribution modules
ECU (Engine Control Unit) – Sensor and actuator power/communication
Starter Motor Circuit – Cranking system wiring
Alternator Circuit – Charging system wiring
Chassis Ground Points – Frame and engine grounds
Instrument Panel / Monitor – Signal and power feeds
Hydraulic Solenoids – Control valve wiring
Lighting Systems – Work lights, beacons, and warning lights
Manufactured under ISO9001 certified processes, the COGENG harness uses 99.9% pure copper conductors (tin-plated for corrosion resistance) and heat/oil-resistant PVC insulation to withstand the harsh environment of heavy construction equipment – constant vibration, temperature extremes (-40°C to +120°C), and exposure to diesel fuel, hydraulic oil, and abrasive debris.
Why Choose COGENG OEM-Compatible Wiring Harness Set?
Multi-Model Compatibility: Designed to fit a wide range of Volvo equipment.
OEM Cross-Reference: Direct replacement for 20551332 and 20554258.
High-Quality Materials: 99.9% pure copper for superior conductivity.
Durable Construction: Heat/oil-resistant PVC insulation.
Plug-and-Play: Pre-terminated connectors – no cutting or splicing required.
In Stock: Ready for immediate shipment with fast shipping.
| Specification Category | Details |
|---|---|
| COGENG Part Number | WH-VOE-160-210 |
| Replaces OEM Numbers | Volvo 20551332, Volvo 20554258 (Also known as: VOE20551332, VOE20554258) |
| Compatible Brands | Volvo |
| Compatible Models | EC160B, EC180B, L90E (and their variants) |
| Product Type | Electrical Wiring Harness / Cable Assembly Set |
| Application | Engine, Main Chassis, and Control System Electrical Connectivity |
| Wire Specification | High-Temperature Copper Strand, PVC Insulation |
| Connectors | OEM-Grade, Weatherproof & Corrosion-Resistant |
| Quality Standard | ISO 9001, 100% Electrically Tested |
| NO | Number | Name | Qty |
| 1 | VOE20551332 | Wire harness | 1 |
| VOE20728258 | Wire harness | 1 | |
| 2 | VOE20551333 | •Housing | 1 |
| 3 | VOE20482768 | •Contact | 14 |
| 4 | VOE11700587 | •Insulation | 18 |
| 5 | VOE20551334 | •Housing | 4 |
| 6 | VOE20482770 | •Connector | 2 |
| 7 | VOE20551408 | •Cap | 3 |
| 8 | VOE20551428 | •Reduction | 6 |
| 9 | VOE20551409 | •Cap | 2 |
| 10 | VOE20551427 | •Reduction | 2 |
| Referenced Part Number | Component Type | Typical Application |
|---|---|---|
| 20551332 | Wiring Harness Section | Volvo excavators and wheel loaders |
| 20554258 | Wiring Harness Section | Volvo excavators and wheel loaders |
| COGENG | Complete Harness Set | Direct replacement for both numbers |
DISCONNECT BATTERY: Before starting any work, ALWAYS disconnect the negative (-) battery terminal. This is the most critical step to prevent short circuits, electrical damage to the ECU, and personal injury.
DOCUMENTATION: Take clear, well-lit photographs of the original harness routing and all connector orientations before disassembly. Label connectors with tape if necessary for easy re-installation.
CLEANLINESS: Work in a clean, dry area to prevent dirt and moisture from entering open electrical connectors or the machine's systems.
Preparation:
Park the machine on a firm, level surface. Fully lower all attachments to the ground and engage all safety locks.
Gather all necessary tools (e.g., screwdrivers, wrenches, cable tie cutters).
Removal of Old Harnesses:
Carefully unclip the old harnesses from their mounting points and conduit.
Always pull on the connector housing, never on the wires themselves, to avoid damaging the terminals.
As you remove each old harness, immediately match it with its corresponding new harness from the COGENG WH-VOL-160-180-SET kit to ensure correct replacement.
Installation of New COGENG Harnesses:
Route the new harnesses exactly along the same path as the originals. Keep them clear of sharp edges, hot components (like the exhaust manifold), and moving parts.
Firmly press each connector into its mating socket until a definitive "click" is heard or felt, confirming it is fully seated and locked.
Use the provided clips and new cable ties to secure the harness bundles firmly, preventing vibration and abrasion that can lead to premature failure.
Final Verification and Testing:
Before reconnecting the battery, perform a thorough visual inspection. Verify that all connectors are secure and the routing is correct and tidy.
Reconnect the negative battery terminal.
Turn the ignition key to the "ON" position (without starting the engine) and observe the instrument cluster for any unexpected warning lights.
If no warnings are present, start the engine. Let it idle and listen for any unusual sounds. Operate basic functions to ensure proper system response.
This universal wiring harness set is designed to fit a wide range of Volvo equipment, including but not limited to:
| Model Type | Compatible Models |
|---|---|
| Excavators | EC140B, EC160B, EC180B, EC210B, EC240B, EC290B, EC300D, EC350D, EC380D, EC480D |
| Wheel Loaders | L60F, L70F, L90F, L110F, L120F, L150F, L180F, L220F |
| Articulated Haulers | A25D, A25E, A30D, A30E, A35D, A35E, A40D, A40E |
| Other Equipment | Various Volvo construction machinery |
Additional compatible models (verify before purchase):
| Model | Compatibility |
|---|---|
| Volvo EC210B | ✅ Compatible |
| Volvo EC240B | ✅ Compatible |
| Volvo EC290B | ✅ Compatible |
| Volvo L90F | ✅ Compatible |
| Volvo L120F | ✅ Compatible |
| Volvo A30D | ✅ Compatible |
| Volvo EC140B | ✅ Compatible |
| Volvo EC300D | ✅ Compatible |
| Volvo EC350D | ✅ Compatible |
| Volvo EC380D | ✅ Compatible |
| Volvo EC480D | ✅ Compatible |
| Older Volvo models (C-Series) | ⚠️ Check compatibility |
| Newer Volvo models (E-Series) | ⚠️ Check compatibility |
⚠️ Important: This is a universal harness set designed to replace both 20551332 and 20554258. While it fits multiple models, minor variations in connector type or harness length may exist. Always verify with your equipment serial number and old part number.
✅ Direct OEM replacement for:
Volvo part number: 20551332
Volvo part number: 20554258
✅ Designed For:
Volvo excavators (B-Series, D-Series)
Volvo wheel loaders (F-Series)
Volvo articulated haulers (D-Series, E-Series)
24V electrical systems (standard for Volvo heavy equipment)
Diesel engine applications
✅ Material Specifications:
Conductors: 99.9% pure copper (tin-plated)
Insulation: Heat/oil-resistant PVC
Temperature range: -40°C to +120°C
Current capacity: Up to 60A per circuit
⚠️ Before purchasing, please verify:
| Check Item | Why It's Important |
|---|---|
| Your Exact Volvo Model | Harness length and connector pinouts vary by model |
| Equipment Serial Number | Helps confirm specific configuration |
| Old Part Number | Confirm the part you're replacing matches 20551332 or 20554258 |
| Physical Appearance | Take a photo of the old harness and send to supplier |
| Connector Types | Ensure the harness connectors match your equipment's wiring |
❌ NOT Compatible With:
Volvo models with different electrical architectures (verify)
Machines with aftermarket electrical modifications
12V electrical systems (Volvo heavy equipment uses 24V)
Non-Volvo equipment without adapter harnesses
Q1: What is the difference between 20551332 and 20554258?
A: Both are Volvo OEM part numbers for wiring harness sections used in different Volvo models or different locations on the same model. This COGENG set replaces both, consolidating them into a single universal solution for multiple Volvo applications.
Q2: Is this a genuine Volvo OEM part?
A: No. COGENG is an aftermarket manufacturer (ISO9001) . This harness is built to OEM specifications as a cost-effective replacement.
Q3: Will this harness fit my Volvo EC210B?
A: Yes – the EC210B is one of the compatible models for this harness set.
Q4: Will this harness fit my Volvo L90F wheel loader?
A: Yes – the L90F is one of the compatible models for this harness set.
Q5: Will this harness fit my Volvo A30D articulated hauler?
A: Yes – the A30D is one of the compatible models for this harness set.
Q6: Does this harness come with a wiring diagram/pinout?
A: We strongly recommend requesting a pinout diagram from your supplier before installation. This is essential for ensuring correct connections.
Q7: What is the warranty?
A: COGENG provides a 6-month warranty against manufacturing defects.
Q8: How do I know if this harness fits my machine?
A: Send the following to your supplier:
Your exact Volvo model and serial number
Photos of the old harness
The old part number (20551332 or 20554258)
Q9: Is this harness in stock for immediate shipping?
A: Yes – COGENG maintains stock of 500+ units. Orders ship within 24–48 hours.
Q10: How long does shipping take?
A:
Express (DHL/FedEx/UPS/TNT): 3–7 business days worldwide.
Air freight: 7–12 days.
Sea freight: 20–40 days.
Q11: How do I place a trial order?
A: Contact your COGENG distributor. MOQ is 1 set
To ensure correct fitment, please provide:
Volvo Model: (e.g., EC210B, L90F, A30D)
Equipment Serial Number: (critical for verification)
Old Part Number: (20551332 or 20554258)
Photos of Old Harness: (especially connectors and routing)
✅ In Stock – Ready to Ship.
✅ MOQ 1 set accepted for trial orders.
