21739026 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

Main electrical harness used across Volvo Penta TAD5 and TAD7 generator engines. It distributes ECU power, sensor signals, actuator feeds and engine-interface circuits through the original sealed connectors.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD550GE
• Volvo Penta TAD551GE
• Volvo Penta TAD560VE
• Volvo Penta TAD561VE
• Volvo Penta TAD750GE
• Volvo Penta TAD751GE
• Volvo Penta TAD752GE
• Volvo Penta TAD753GE
• Volvo Penta TAD754GE
• Volvo Penta TAD765VE
• Volvo Penta TAD764VE
• Volvo Penta TAD763VE
• Volvo Penta TAD762VE
• Volvo Penta TAD761VE

• Engine Family: TAD

⚙️ Key Features

• Genuine Volvo Penta electrical harness
• Factory connector keying and branch lengths
• Marine/industrial-grade insulation and protective loom
• Designed for the original ECU and sensor generation
• Engine serial and connector-layout verification required
• Engine type: Inline-six turbocharged generator diesel

🔌 Function

Carries electrical power, ground, communication and sensor or actuator signals between the connected engine-system components.

⚠️ Common Signs of Failure

• Multiple unrelated sensor fault codes
• Loss of ECU or control-system communication

🛠️ Service Notes

• Compare the new harness with the old one before fitting — check the connector types, the number of pins and the branch lengths, and lay it out alongside the old loom to confirm every branch reaches its component
• Disconnect the batteries before unplugging or fitting a harness, and support the loom as you work so its weight never hangs on a connector or a bulkhead grommet
• Route it along the original path and secure it with the original clips and ties, clear of hot exhaust surfaces, sharp edges and anything that moves; leave a service loop at each connector rather than pulling a branch tight
• Push every connector home until the lock latches and protect the joints with a marine dielectric grease — an intermittent electrical fault is far more often a partly seated or salt-corroded pin than a broken wire
• Renewing the harness is the right repair where insulation is chafed, brittle or oil-soaked, or where corrosion has tracked inside the connector bodies; patch repairs in a damp engine bay tend to fail again, and any single conductor that is repaired should be joined with tinned marine cable of the same gauge, a proper crimp and adhesive-lined heat-shrink

🔄 Supersession & Cross Reference

Other-Brand OEM Numbers

• VOE21739026

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging