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Sime Gasket For Downstream Side Mix 6174807

Sime

Sime Gasket For Downstream Side Mix 6174807

Sime gasket for the downstream side mix, part number 6174807, for use in Sime Dewy and Planet Dewy gas boilers.

At a glance

  • Part type: gasket for downstream side mix
  • Also known as 2040670
Manufacturer part no.
6174807
Showing prices

£3.90

£3.25 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 Sime 6174807 is a gasket for the downstream side mix, used in Sime gas boilers. It forms the seal at the downstream side of the mixing assembly, preventing leakage at the joint. It is listed under O-rings, washers and gaskets within Sime gas boiler spares.

Signs this part needs replacing

  • Water or gas traces weeping from the downstream side mix joint
  • Visible hardening, cracking or flattening of the gasket material
  • Discolouration or staining around the sealing face
  • The joint fails to seal after the assembly has been disturbed
  • Gasket deformed or torn on inspection during servicing

Before you order

  • Confirm your appliance model against the fit list above
  • Check the existing gasket and the part number 6174807 before ordering
  • Inspect the mating faces for corrosion, scoring or debris that could prevent a seal
  • Confirm the correct position on the downstream side mix assembly

Not sure which part?

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