21883891 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta two-metre extension harness connects the SCR/AdBlue tank-heating valve to the engine or aftertreatment wiring on TAD1170-TAD1172VE engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD1380-82GE
• Volvo Penta TAD880-84VE
• Volvo Penta TAD1180-83VE
• Volvo Penta TAD580-83VE
• Volvo Penta TAD1381-85VE
• Volvo Penta TAD570-72VE
• Volvo Penta TAD570-71VE-B
• Volvo Penta TAD1670-72VE
• Volvo Penta TAD1170-72VE
• Volvo Penta TAD870-73VE
• Volvo Penta TWD1682-83GE
• Volvo Penta TWD1683GE-B
• Volvo Penta TWD1683VE
• Volvo Penta TWD1672-1673GE
• Volvo Penta TAD1384-85VE-IWP
• Volvo Penta TADH880-84VE

• Engine Family: TAD, TWD, TADH

⚙️ Key Features

• Length: 2000 mm
• Tank-heating valve circuit
• Factory sealed connectors
• SCR/AdBlue-compatible routing
• Heat- and vibration-resistant loom
• L=2000mm (Volvo assembly listing)

🔌 Function

Carries power and control signals to the DEF tank-heating valve.

⚠️ Common Signs of Failure

• Tank-heating fault
• Corroded connector
• Chafed insulation
• DEF freezing or dosing derate caused by loss of heating

🛠️ 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

• VOE21883891

Aftermarket / Verified Equivalents

• Braided replacement/reference: 23321019
• Longer related extension: 22964039

📦 Condition

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