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Worcester Bosch G3/8 x G1/4 Union 87161023400

Worcester Bosch

Worcester Bosch G3/8 x G1/4 Union 87161023400

G3/8 inch x G1/4 inch union for Worcester Bosch gas boilers, listed for 24I RSF Combi and 28I RSF models.

At a glance

  • Also known as 1013831
  • Isolate the gas and water supplies before work; gas-carrying joints must be handled by a Gas Safe registered engineer
Manufacturer part no.
87161023400
GC number
E72-941
Showing prices

£8.34

£6.95 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 Worcester Bosch 87161023400 is a G3/8 inch x G1/4 inch union for gas boilers. It joins a G3/8 inch threaded connection to a G1/4 inch threaded connection within the appliance. This union is listed for version codes ASI, ASJ, AUQ and AUX.

Signs this part needs replacing

  • Visible weeping or leakage at the union joint
  • Corrosion or pitting on the union body or sealing faces
  • Damaged or crossed threads preventing a secure seal
  • Repeated pressure loss traced to the union connection

Before you order

  • Confirm your appliance model matches one of the listed fits
  • Check the version code on the appliance against ASI, ASJ, AUQ or AUX
  • Verify the required connection sizes are G3/8 inch and G1/4 inch
  • Isolate the gas and water supplies before work; gas-carrying joints must be handled 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.