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Worcester Bosch Manifold Plate 87161165520

Worcester Bosch

Worcester Bosch Manifold Plate 87161165520

Worcester Bosch 87161165520 manifold plate for Greenstar Si Compact and CDi Compact boilers, routing water through the internal pipework.

At a glance

  • Part type: Manifold plate (manifolds)
  • Appliance family: Greenstar Si Compact and CDi Compact
  • Also known as 1031025
  • This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Manufacturer part no.
87161165520
GC number
J04-406
Showing prices

£85.13

£70.94 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 87161165520 is a manifold plate used in the hydraulic assembly of Greenstar gas boilers. It sits within the internal pipework and routes water through the appliance so that flow reaches the correct components in the heating and hot water circuit. The plate is supplied as a spare for the Greenstar Si Compact and CDi Compact ranges.

Signs this part needs replacing

  • Water weeping or visible damp around the manifold plate or its joints
  • Scale or corrosion build-up on the plate face or ports
  • System pressure that drops and returns after topping up
  • Reduced hot water or heating performance traced to restricted flow
  • Leaks returning after the joint seals have been renewed

Before you order

  • Check the GC number and appliance serial plate to confirm the model matches the compatibility list.
  • Compare the part number on the existing component against 87161165520 and the earlier numbers 8-718-684-471-0 and 87186844710.
  • Check whether new seals or gaskets are needed for the joint before refitting.
  • 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.