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Worcester Bosch Condensate Assembly Siphon Drain Connector 87161213420

Worcester Bosch

Worcester Bosch Condensate Assembly Siphon Drain Connector 87161213420

Worcester Bosch 87161213420 condensate assembly (siphon and drain connector) for 26CDi and 26CDi XTRA RSF gas boilers.

At a glance

  • Part type: Condensate assembly (siphon and drain connector)
  • Also known as 1016875, N5638
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161213420
GC number
795-480
Showing prices

£16.28

£13.57 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 Worcester Bosch 87161213420 is a condensate assembly — the siphon and drain connector that collects condensate from the heat exchanger and carries it away to the boiler's drain point. It is manufactured by Worcester Bosch for the 26CDi and 26CDi XTRA RSF range of gas boilers. Because it sits in the condensate path, a sound seal and a clear internal passage are essential to keep the appliance running and draining correctly.

Signs this part needs replacing

  • Water or condensate pooling beneath the boiler or around the siphon body
  • Dripping from the condensate trap or drain connector while the boiler is running
  • Boiler locking out or failing to fire where the condensate path is restricted or blocked
  • Gurgling or bubbling noises from the condensate route during operation
  • Visible cracks, heavy scale build-up, or a hardened and perished seal on the assembly

Before you order

  • Confirm the appliance model and GC number against the compatibility list before ordering.
  • Check the number on the existing part against 87161213420 and the alternative numbers 1016875 and N5638.
  • Inspect the seal or gasket at the condensate connection and replace it if it is hardened or damaged.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

Not sure which part?

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