Volvo FH4 AdBlue Dosing Wiring Harness 21947227 Euro 6 Used

Description:
This listing is for a genuine Volvo AdBlue / SCR dosing wiring harness with integrated control module, part number 21947227 (revision 21947227-P02). It is used on Euro 6 Volvo FH4 and FM4 heavy duty trucks to connect the AdBlue tank, dosing valve, level and temperature sensors and associated components to the vehicle’s SCR control system. The harness includes multiple OE connectors, protective corrugated conduit and an ATEX-rated Volvo module manufactured in Hungary, designed for use in the exposed chassis area around the AdBlue tank.

The part was removed from a fully operational Euro 6 Volvo truck and electrically tested on the vehicle prior to dismantling to confirm proper function. There are typical signs of use such as dirt, surface oxidation on metal eyelets and marks on the loom covering, but no obvious damage to the wiring, plugs or module housing. Overall condition is graded B – used but fully serviceable. Please study the photos to verify connector types, cable routing and mounting points against your existing harness.

Technical details and features:
- Genuine Volvo OE AdBlue / SCR dosing wiring harness
- Part numbers: 21947227, 21947227-P02 (harness label)
- Application: Euro 6 SCR / AdBlue system, dosing and tank wiring
- Voltage: 24V commercial vehicle electrical system
- Country of manufacture of control module: Hungary (as per label)
- Multiple sealed electrical connectors for tank sensors and dosing components
- Corrugated plastic conduit with taped branches and OE mounting clips
- Designed for exterior chassis mounting around the AdBlue tank area

Compatibility:
This harness is typically fitted to Volvo FH4 and FM4 Euro 6 trucks. It may fit other Volvo heavy-duty models using the same AdBlue tank and SCR layout. Always match the part number 21947227 (and revision 21947227-P02) and connector layout with your old harness or consult a Volvo dealer or parts catalogue using your chassis/VIN to confirm compatibility before purchase.

Installation notes:
Professional installation is strongly recommended for all SCR/AdBlue electrical components. The system operates at 24V and in a harsh environment; ensure correct routing, clipping and protection of the loom to avoid chafing. After installation, the vehicle’s diagnostic system should be used to clear any stored fault codes and check live data for the AdBlue dosing unit and related sensors. In most cases no software programming is required when replacing like-for-like harnesses, but calibration or adaptation procedures may be necessary if related components have been changed.

This is a used original Volvo part, tested on the vehicle prior to removal and inspected before listing. It offers a cost-effective replacement for a damaged or corroded AdBlue harness while maintaining OE quality and fit.

Shipping & Returns:
We ship across UK/EU with tracked services. Returns accepted within 30 days; buyer pays return postage. Please inspect upon arrival and message us with any concerns.

Why Buy From Us:
Genuine part, 3-month warranty, fast dispatch, secure packaging.