Volvo FH4/FM4 Main Foot Brake EBS Valve 21114973 K027386 22085772 Front Euro 6

Description:
Genuine Volvo/Knorr-Bremse main foot brake EBS control valve with long air pipe harness, used on Euro 6 Volvo FH4 and FM4 trucks. This component is mounted at the front chassis near the brake pedal linkage and works as the primary pneumatic brake control unit in the EBS system. It converts the driver’s pedal input into proportional air pressure signals for the front and rear brake circuits and communicates with the EBS ECU for precise brake balance and stability control.

The unit in the photos carries Volvo OE number 21114973 and Knorr-Bremse part number K027386 on the original label. Cross-references used in parts catalogues and aftermarket listings include 22085772, 21327357 and 7421327357, as well as related Knorr numbers K103367 / K103367K50 for superseded versions. Multiple commercial parts platforms describe this part as an EBS modulator / brake control valve / foot brake valve for Volvo FH, FM and FMX-4 series from around 2013 onwards, including Euro 6 variants.

This valve is suitable for a wide range of Volvo heavy commercial vehicles such as FH4 tractor units (2013-on), FM4 rigid and tractor models (2013-on) and FMX-4 construction trucks, and is also used on some Renault Trucks C and T models that share the same chassis and braking architecture. It is designed for 24V electrical systems and works with EBS-controlled pneumatic disc brakes.

Installation notes: this is a safety-critical brake component and should only be fitted by a qualified technician familiar with Volvo EBS systems. After installation the system must be checked for leaks, correctly bled, and the EBS system should be calibrated and scanned with appropriate diagnostic equipment to clear any fault codes and confirm correct operation. In many cases no software programming is required if the exact part number is used, but the workshop should always follow Volvo service procedures.

Our used unit comes complete with the attached air pipes as pictured. These pipes can be re-used, shortened or replaced depending on your chassis layout. The electrical connector is undamaged; ensure your wiring loom and plug seals are in good condition before installation. All mounting points are intact, and the body shows only cosmetic marks from previous use.

If you are replacing a faulty valve due to EBS errors, air leaks or inconsistent pedal feel, matching the numbers on your old unit (21114973 / K027386 or listed equivalents) is the most reliable way to confirm compatibility. For fleets operating Volvo FH4, FM4 or FMX-4 Euro 6 trucks, this used genuine valve offers a cost-effective alternative to a new OEM part while maintaining original braking performance.

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.