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Worcester Bosch Gas Cock 3/4 Inch 87161424050

Worcester Bosch

Worcester Bosch Gas Cock 3/4 Inch 87161424050

Worcester Bosch 3/4 inch gas cock isolation valve, part 87161424050, GC 173-105, for CDI and SBI appliances.

At a glance

  • Part type: Isolation valve (gas cock)
  • Also known as 1018165
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161424050
GC number
173-105
Showing prices

£26.69

£22.24 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 87161424050 is a 3/4 inch gas cock used as an isolation valve on Worcester Bosch heating appliances. It sits on the supply pipework beneath the appliance and lets an engineer or homeowner stop the flow of gas into the boiler for servicing, or shut the supply off completely in an emergency. It is a serviceable brass-bodied valve rather than a fixed connection, so it can be operated repeatedly over the life of the appliance.

Signs this part needs replacing

  • The valve will not shut off the gas supply fully when turned
  • The spindle is stiff, seized or turns without changing the flow
  • Gas can be smelled or a leak is detected at the spindle or gland
  • The operating handle or lever is missing, cracked or rounded off
  • The valve body or union shows corrosion, weeping or a visible weep stain

Before you order

  • Check the GC number and appliance model against the compatibility list before ordering, as several Worcester Bosch CDI and SBI variants use different valve arrangements.
  • Confirm the previous number ZCVLV007 or the alternative number 1018165 if you are matching against an older parts listing.
  • Check whether a sealing washer or jointing compound is needed for the union on your installation before you start the job.
  • 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.