21235313 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

A pre-terminated engine wiring harness incorporating the specified connector housings, terminals and seals. It links engine sensors and control components to the electrical management system.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD720VE
• Volvo Penta TAD721VE

• Engine Family: TAD

⚙️ Key Features

• Factory-terminated connector branches
• Correct conductor lengths and routing
• Sealed connectors for engine-compartment use
• Direct replacement where part number 21235313 is specified
• Engine type: Volvo Penta diesel electrical or electronic-control system

🔌 Function

Carries power, sensor signals and control commands between the engine and electronic control system.

⚠️ Common Signs of Failure

• Intermittent sensor faults
• Engine shutdown or non-start
• Corroded or heat-damaged connectors
• Broken conductors near branch points
• Communication or ECU fault codes

🛠️ 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

OEM Supersession Chain

• 21235313 → Supersedes 21018675

OEM / Related Numbers

• 21018675 earlier number superseded by this part
• 20556355, 20580491, 20482767 and 20460337 - connector housings
• 20580494, 20459895, 20499647 and 20580495 - terminals
• 20459897 and 20499641 - connector gaskets
• 20499646 and 20460348 - connectors

📦 Condition

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