Product Overview
The 4 inch Gekko Head is for grout work a spinner will not shift. It concentrates the flow through a single jet and puts it into the grout line, rather than spreading it across a wide path.
It is the head to reach for when the floor has already been done with a spinner and the lines have not come up.
The Gekko System — One Wand, Six Heads
Gekko is a modular hard surface system. One wand takes any of six cleaning heads through a threaded collar, so a single wand covers open floor, corners, coving, shower walls, countertops and under toe kicks.
| Part | What it is | Where it is used |
|---|---|---|
| Gekko Wand (no head) | AR51A | The wand itself — every head needs it |
| Gekko 4 Inch Head (this product) | AR51D | Concentrated jet for stubborn grout and tight spots |
| Gekko Edge, Corner & Coving Tool 4 Inch | AR51C | Corners, edges and coving that spinners miss |
| Gekko Squeegee Head 14 Inch | AR51E | Open floor, fast drying |
| Gekko Brush Head 14 Inch | AR51H | Agitation across open floor |
| Gekko SX-7 Attachment | AR51G | Spinner head on the Gekko wand |
| Gekko SX-15 Tool Attachment | AR51S | Larger spinner head on the Gekko wand |
Important — New Gekko Heads Only
The current Gekko wand connects to all of the new Gekko heads. It will not work on old Gekko heads.
If you are adding to an existing Gekko set rather than buying new, tell us what you already have and we will confirm the generation before you order. This is the single most common mis-purchase on the range, and the parts look similar enough that it is not obvious until they are in your hands.
Specifications
| Pressure rating | 2,000 psi |
|---|---|
| Cleaning width | 4 inches |
| Jet | Single 1502 Veejet |
| Glide | Delrin |
| Fits | Gekko Wand (AR51A), new generation only |
Hydro-Force does not publish the head weight. Rather than estimate it, we have left it out.
What It Runs On
The Gekko range works with any truckmount or high-pressure portable extractor. It is a high-pressure tool system, so a low-pressure portable will connect but will not deliver the result the tools were designed around.
Around 1,000 psi is sufficient for tile and grout work. The tools are rated to 2,000 psi, which is headroom rather than a target — if you are reaching for more pressure to get a result, dwell time and chemistry are usually the answer.
Why a Delrin Glide
Delrin is a low-friction engineering plastic. On tile it lets the head move without dragging, and it wears rather than scoring the surface underneath it — which is the right way round for a tool being pushed across someone's floor.
Operating Advice
- Work along the grout line. A concentrated jet aimed across the line does most of its work on the tile.
- Keep the glide clean. Grit trapped under a glide is what marks a polished surface.
- Check the jet if performance drops. A single-jet head loses everything when that one jet partially blocks.
Frequently Asked Questions
When would I use this instead of a spinner?
When the spinner has been over the floor and the grout lines are still soiled. A spinner spreads energy over a circle; this puts it in a line.
Does it fit my Gekko wand?
It fits the new generation wand. It will not fit old Gekko equipment.
What jet does it take?
A single 1502 Veejet.
Can I use it on stone?
On stone grout lines, yes, with judgement about the pressure and the stone. Keep the glide clean so nothing is dragged across a polished face.
Is 4 inches not slow over a big floor?
It is, and it is not meant for open floor. Use the 14 inch squeegee head (AR51E) or a spinner for area, and this for the lines that resist.
Documents
What We See in the Field
The Gekko range gets bought head by head over time, and the generation question is what catches people out — an old wand with a new head, or the reverse, bought months apart from different places. Check the generation before ordering rather than after.
The other pattern is pressure. Operators who are disappointed with a hard surface result are usually short on dwell time or running the wrong chemistry, and no amount of extra pressure at the tool makes up for either.

