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Potterton Thermostat Lever S17004738

Potterton

Potterton Thermostat Lever S17004738

Thermostat lever control knob for Potterton Derwent Prestige Plus and Potterton Commercial NXR3 and NXR4 boilers.

Manufacturer part no.
S17004738
Showing prices

£38.40

£32.00 ex. VAT · VAT at 20%

Available to order · 3 working days
Available to order · 3 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 Potterton S17004738 thermostat lever is the control knob fitted to the boiler's thermostat spindle, used to set the appliance flow temperature by hand. It is listed by the manufacturer against the Potterton Derwent Prestige Plus, and appears in the Potterton Commercial NXR3 and NXR4 ranges.

Signs this part needs replacing

  • The lever is missing from the thermostat spindle
  • The knob has cracked or split around its mounting
  • The lever turns on the spindle without moving the thermostat setting
  • Temperature setting cannot be selected or held reliably
  • The lever has become loose or detaches when turned

Before you order

  • Confirm the part number S17004738 against the existing component or appliance documentation
  • Check the appliance model against the fit list above
  • Inspect the thermostat spindle for damage or wear before fitting a new lever
  • Check that the existing lever's mounting matches the replacement part

Not sure which part?

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