21883893 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

This genuine Volvo Penta two-metre extension harness connects a NOx sensor to the SCR aftertreatment control wiring on TAD1170-TAD1172VE engines.

🚤 Compatibility

Typically suits:

• Volvo Penta TAD570-72VE
• Volvo Penta TAD570-71VE-B
• Volvo Penta TAD1670-72VE
• Volvo Penta TAD1170-72VE
• Volvo Penta TAD870-73VE

• Engine Family: TAD

⚙️ Key Features

• Length: 2000 mm
• NOx-sensor circuit
• Factory sealed connectors
• High-temperature protective loom
• SCR control-system application
• L=2000mm (Volvo assembly listing)

🔌 Function

Carries power, ground and sensor communication between the NOx sensor and aftertreatment controller.

⚠️ Common Signs of Failure

• NOx-sensor communication fault
• Heat-damaged loom
• Corroded connector
• SCR derate or emissions warning

🛠️ 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

• VOE21883893

Aftermarket / Verified Equivalents

• Braided replacement/reference: 23321091
• Related extension lengths: 21939133, 21939134 and 21939135

📦 Condition

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