Checking hours…Mon–Fri 7:30am–5pm · Sat 9am–12pm01302 279234Trade account
Ariston Return Group 65103498

Ariston

Ariston Return Group 65103498

Return group for the Ariston ACO 35 HP MFFI UK boiler, part number 65103498.

At a glance

  • Part type: return group
  • Appliance family: ACO 35 HP MFFI UK
  • Also known as 1597631
Manufacturer part no.
65103498
Showing prices

£198.98

£165.82 ex. VAT · VAT at 20%

Available to order · 7 working days
Available to order · 7 working days
Not certain it's the right part? The technical team verifies fitment before dispatch — no charge, and it stops a second trip.Call the technical teamSend a technical question

Same-day dispatch

Ordered by 4pm Mon–Fri, 10:30am Sat.

30-day returns

Unused, in original packaging.

What it is

The Ariston 65103498 is a return group for the Ariston ACO 35 HP MFFI UK boiler. It forms part of the appliance's hydraulic circuit, handling the return side of the heating water path. It is supplied as a single assembly identified by the manufacturer's part number 65103498.

Signs this part needs replacing

  • Water weeping or visible staining around the return group body or its connections
  • Persistent pressure loss on the heating circuit that cannot be traced to other components
  • Kettling, gurgling or unusual noise from the boiler during operation
  • Poor or inconsistent heating performance linked to restricted flow through the return side

Before you order

  • Confirm the boiler model is the Ariston ACO 35 HP MFFI UK
  • Check the GC number on the appliance data badge against the fitment listed above
  • Verify the existing part number 65103498 against the manufacturer's parts list for your appliance

Not sure which part?

Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.