22025302 Wiring Harness | Genuine Volvo Penta Part

🔧 Product Description

Genuine Volvo Penta 3.0m SCR Control-Unit Wiring Harness, part number 22025302. A genuine 3.0-metre SCR harness connecting the aftertreatment control unit to the injector, exhaust-temperature sensor and NOx-sensor circuits.

🚤 Compatibility

Typically suits:

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

• Engine Family: TAD
• HP Range: Approximately 380-800 HP
• Year Range: Approximately 2014 - current production-era applications

⚙️ Key Features

• 3000 mm long
• Runs from the SCR control unit to the injector, exhaust temperature sensor and NOx sensor
• 0.413 kg
• Listed for three TAD series applications
• L=3000mm (Volvo assembly listing)

🔌 Function

Carries supply and signal between the aftertreatment control unit and the dosing injector, exhaust temperature sensor and NOx sensor over a 3000 mm run.

⚠️ Common Signs of Failure

• Aftertreatment or emissions warnings that come and go with vibration
• A sensor or the dosing injector reported as not communicating
• Sheath scorched, hardened or chafed where the loom passes the exhaust
• White crystalline deposits from urea on a connector or pin
• A circuit reading open or high resistance when the loom is moved

🛠️ Service Notes

• Harnesses 22025303 and 22025304 cover the same circuits at 5000 and 7000 mm, so measure the run between the control unit and the dosing point before ordering
• Keep the loom clear of the exhaust and aftertreatment casing - heat damage is the usual cause of a repeat fault

🔄 Supersession & Cross Reference

OEM / Related Numbers

• 23315464 - later 3.0m braided harness
• 21939133 - 3.0m engine-to-SCR-control-unit extension
• 21883893 - 2.0m NOx-sensor extension
• 21883891 - 2.0m tank heating / level-temperature sensor extension

📦 Condition

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