Ariston
Ariston Pressure Gauge 65121089
Pressure gauge for Ariston ACO series gas boilers, showing the water pressure within the heating circuit.
At a glance
- Also known as 1571789
£43.19
£35.99 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Ariston 65121089 is a pressure gauge fitted to Ariston ACO series gas boilers. It displays the water pressure within the heating circuit so the system can be checked as correctly filled and pressurised. It is a service component covering the ACO 27 and ACO 32 families.
Signs this part needs replacing
- The needle sits at zero or does not move when the system is pressurised
- The reading is erratic, flickering or disagrees with a separate test gauge
- Moisture or condensation is visible behind the dial glass
- Water is weeping from the gauge body or its connection
- The dial face is discoloured or the markings are no longer legible
Before you order
- Confirm your appliance model and GC number against the fitment list above
- Check the number on the existing gauge, or in the manufacturer's parts list, matches 65121089
- If the boiler has been drained down, rule out a filling loop or expansion vessel fault before replacing the gauge
Mechanical
| Part type | GAUGES |
|---|
Compliance
| Manufacturer part number (MPN) | 65121089 |
|---|---|
| Alternative numbers | 1571789 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| ARISTON ACO 27 MFFI GPL | 47-116-34 | 47-116-34 | — | — |
| ARISTON ACO 27 MFFI MET | 47-116-34 | 47-116-34 | — | — |
| ARISTON ACO 27 RFFI SYSTEM GPL | 41-116-09 | 41-116-09 | — | — |
| ARISTON ACO 27 RFFI SYSTEM MET | 41-116-09 | 41-116-09 | — | — |
| ARISTON ACO 32 MFFI GPL | 47-116-35 | 47-116-35 | — | — |
| ARISTON ACO 32 MFFI MET | 47-116-35 | 47-116-35 | — | — |
| ARISTON ACO 32 RFFI SYSTEM GPL | 41-116-10 | 41-116-10 | — | — |
| ARISTON ACO 32 RFFI SYSTEM MET | 41-116-10 | 41-116-10 | — | — |
| ARISTON ACO 35 HP MFFI UK | 47-116-35 | 47-116-35 | — | — |
| ARISTON ARISTON ACO 27 MFFI | — | — | — |
Showing 10 of 13 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
ARISTON appliance manual — ACO 27 MFFI GPL (GC 47-116-34), ACO 27 MFFI MET (GC 47-116-34), ACO 27 RFFI SYSTEM GPL (GC 41-116-09), ACO 27 RFFI SYSTEM MET (GC 41-116-09), ACO 32 MFFI GPL (GC 47-116-35), ACO 32 MFFI MET (GC 47-116-35), ACO 32 RFFI SYSTEM GPL (GC 41-116-10), ACO 32 RFFI SYSTEM MET (GC 41-116-10)
manualmanualARISTON appliance manual — ACO 35 HP MFFI UK (GC 47-116-35)
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