Does Hansgrohe sell Focus M42 genuine spares?

Yes — Hansgrohe publishes exploded diagrams and part numbers for every Focus M42 on their UK support site.

Standard or reverse cartridge?

Kitchen mono taps like the Hansgrohe Focus M42 usually use a 40 mm reverse cartridge. Basin mono taps use 35 mm standard.

How to Replace a Hansgrohe Focus M42 Cartridge (UK)

The cartridge

The Hansgrohe Focus M42 uses a ceramic-disc cartridge. Note whether hot and cold are separate (dual-flow) or a single mixer cartridge before ordering.

Isolate

Turn off cold and hot at the flexi isolators below the basin. Open the tap to drop pressure. Remove the handle cap, undo the grub screw and lift the handle.

Swap

Loosen the retaining nut on the Hansgrohe Focus M42. Lift out the cartridge. Fit new O-rings, silicone-grease the body, drop the new cartridge in — align the anti-rotation tabs.

Reassemble in reverse. Test at full flow for 60 s, check under the basin for leaks.

Frequently asked questions

Does Hansgrohe sell Focus M42 genuine spares?: Yes — Hansgrohe publishes exploded diagrams and part numbers for every Focus M42 on their UK support site.
Standard or reverse cartridge?: Kitchen mono taps like the Hansgrohe Focus M42 usually use a 40 mm reverse cartridge. Basin mono taps use 35 mm standard.