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Worcester Bosch Washer and Mounting Set 87161155350

Worcester Bosch

Worcester Bosch Washer and Mounting Set 87161155350

Worcester Bosch washer and mounting set (87161155350) for Greenstar boilers, sealing mounting joints against leaks.

At a glance

  • Part type: Gaskets, seals and washers
  • Also known as 1022050
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161155350
GC number
H75-515
Showing prices

£8.51

£7.09 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 washer and mounting set, part 87161155350, is a service kit of seals and washers used at the points where components are mounted to the appliance. It is produced by Worcester Bosch for the Greenstar family of gas boilers, where it sits between mating surfaces and keeps the joint watertight under normal operating pressure and temperature cycling.

Seals of this type are consumable items. They compress to fill the gap between two faces, and once that compression is lost the joint can weep. Replacing the set restores the seal at the mounting point and supports reliable, leak-free running.

Signs this part needs replacing

  • Water weeping or a slow drip from a mounting joint
  • White mineral staining or crusting around the seal face
  • Washers that have hardened, flattened or cracked with age
  • Pressure loss traced to a joint rather than to the boiler itself
  • Slight seepage after a component has been removed and refitted

Before you order

  • Check the GC number on the appliance data badge against the compatibility list before ordering.
  • The alternative number 1022050 may appear on older documentation for the same set.
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.

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