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Johnson & Starley pilot assembly, natural gas S00855

Johnson & Starley

Johnson & Starley pilot assembly, natural gas S00855

Genuine Johnson & Starley natural gas pilot assembly (S00855) for State PRV and SR8 boilers, suitable for push-fit thermocouple.

At a glance

  • Also known as 1690463
  • Gas Safe registered engineer required to isolate gas and refit
Manufacturer part no.
S00855
Showing prices

£40.32

£33.60 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

A natural gas pilot assembly for Johnson & Starley State boilers, providing the small permanent flame that lights the main burner. This version is suitable for a push-fit thermocouple connection.

Signs this part needs replacing

  • Pilot will not light or keeps going out
  • Weak, yellow or lifting pilot flame instead of a steady blue flame
  • Boiler locks out on ignition or flame failure
  • Visible corrosion or a blocked pilot jet

Before you order

  • Confirm your existing pilot uses a push-fit thermocouple connection, not a threaded fit
  • Match the part number printed on your existing pilot assembly
  • Gas Safe registered engineer required to isolate gas and refit

Not sure which part?

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