Worcester Bosch
Worcester Bosch Return Adaptor 87186858390
Worcester Bosch return adaptor, part 87186858390, for Greenstar Ri ErP Compact gas boilers; alternative part number 1031219.
At a glance
- Part type: Adaptors and connectors
- Also known as 1031219
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£29.83
£24.86 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Worcester Bosch return adaptor, part number 87186858390, is a connection component used on Greenstar Ri ErP Compact gas boilers. It forms the joint between the heating return pipework and the appliance's hydraulic assembly, so the return flow enters the boiler through a correctly matched fitting. It is supplied as a single adaptor and is listed under Worcester Bosch's adaptors and connectors range.
Signs this part needs replacing
- Weeping or visible water at the return connection while the boiler is running
- Corrosion, pitting or white scale around the adaptor body or its threads
- Damp staining on the pipework, casing or floor beneath the joint
- System pressure dropping with no other leak identified
- A joint that will not seal cleanly after being re-made
Before you order
- Check the GC number and the appliance serial plate to confirm the model before ordering.
- The alternative part number 1031219 may be listed in place of 87186858390.
- Inspect the sealing washer or O-ring at the joint and renew it if it is compressed, hardened or damaged.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Adaptors and connectors |
|---|
Compliance
| Manufacturer part number (MPN) | 87186858390 |
|---|---|
| GC number | J15-695 |
| Barcode / EAN | 4051516281199 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1031219 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR 27Ri ErP COMPACT LPG | 41-406-55 | 41-406-55 | — | — |
| WORCESTER GREENSTAR 27Ri ErP COMPACT NG | 41-406-54 | 41-406-54 | — | — |
| WORCESTER GREENSTAR 30Ri ErP COMPACT LPG | 41-406-57 | 41-406-57 | — | — |
| WORCESTER GREENSTAR 30Ri ErP COMPACT NG | 41-406-56 | 41-406-56 | — | — |
| WORCESTER GREENSTAR 35Ri ErP COMPACT NG | — | — | — | |
| WORCESTER GREENSTAR RI 27KW COMPACT LPG | 41-406-18 | 41-406-18 | — | — |
| WORCESTER GREENSTAR RI 27KW COMPACT NG | 41-406-17 | 41-406-17 | — | — |
| WORCESTER GREENSTAR Ri 30KW COMPACT LPG | 41-406-20 | 41-406-20 | — | — |
| WORCESTER GREENSTAR Ri 30KW COMPACT NG | 41-406-19 | 41-406-19 | — | — |
| WORCESTER WORCESTER GREENSTAR 27Ri ErP COMPACT LPG | — | — | — |
Showing 10 of 13 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
WORCESTER appliance manual — GREENSTAR 27Ri ErP COMPACT LPG (GC 41-406-55), GREENSTAR 27Ri ErP COMPACT NG (GC 41-406-54), GREENSTAR 30Ri ErP COMPACT LPG (GC 41-406-57), GREENSTAR 30Ri ErP COMPACT NG (GC 41-406-56)
manualmanualWORCESTER appliance manual — GREENSTAR RI 27KW COMPACT LPG (GC 41-406-18), GREENSTAR RI 27KW COMPACT NG (GC 41-406-17), GREENSTAR Ri 30KW COMPACT LPG (GC 41-406-20), GREENSTAR Ri 30KW COMPACT NG (GC 41-406-19)
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