Worcester Bosch
Worcester Bosch WB5 heat exchanger 8716117322
WB5 primary heat exchanger for the Worcester Bosch Greenstar FS and Highflow CDi ErP range, part number 8716117322.
At a glance
- Also known as 2244447
- Gas Safe registered engineer only
£1,070.69
£892.24 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 8716117322 is the WB5 primary heat exchanger for the Worcester Bosch Greenstar FS and Highflow CDi ErP range of boilers. It is the cast component inside the combustion chamber that transfers heat from the burner flame into the central heating water as it passes through.
Signs this part needs replacing
- Reduced heating or hot water output
- Boiler locks out on an overheat or ignition fault
- Kettling or banging noise from the heat exchanger
- Visible scale or corrosion on the exchanger
Before you order
- Confirm your exact boiler model and gas type (NG or LPG) before fitting
- Isolate gas, electrics and water, and drain the system before removal
- Check whether a gasket or seal kit is also needed
- Gas Safe registered engineer only
Compliance
| Alternative numbers | 2244447 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| WORCESTER GREENSTAR FS 30CDi ErP REGULAR LPG | 41-406-63 | 41-406-63 | — | — |
| WORCESTER GREENSTAR FS 30CDi ErP REGULAR NG | 41-406-62 | 41-406-62 | — | — |
| WORCESTER GREENSTAR FS 42CDi ErP REGULAR LPG | 41-406-65 | 41-406-65 | — | — |
| WORCESTER GREENSTAR FS 42CDi ErP REGULAR NG | 41-406-64 | 41-406-64 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 440CDi ErP LPG (7731600099) | 47-406-90 | 47-406-90 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 440CDi ErP NG (7731600098) | 47-406-89 | 47-406-89 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 550CDi ErP LPG (7731600101) | 47-406-92 | 47-406-92 | — | — |
| WORCESTER GREENSTAR HIGHFLOW 550CDi ErP NG (7731600100) | 47-406-91 | 47-406-91 | — | — |
| WORCESTER WORCESTER GREENSTAR FS 30CDi ErP REGULAR LPG | — | — | — | |
| WORCESTER WORCESTER GREENSTAR FS 30CDi ErP REGULAR NG | — | — | — |
Showing 10 of 16 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 FS 30CDi ErP REGULAR LPG (GC 41-406-63), GREENSTAR FS 30CDi ErP REGULAR NG (GC 41-406-62), GREENSTAR FS 42CDi ErP REGULAR LPG (GC 41-406-65), GREENSTAR FS 42CDi ErP REGULAR NG (GC 41-406-64)
manualmanualWORCESTER appliance manual — GREENSTAR HIGHFLOW 440CDi ErP LPG (7731600099) (GC 47-406-90), GREENSTAR HIGHFLOW 440CDi ErP NG (7731600098) (GC 47-406-89), GREENSTAR HIGHFLOW 550CDi ErP LPG (7731600101) (GC 47-406-92), GREENSTAR HIGHFLOW 550CDi ErP NG (7731600100) (GC 47-406-91)
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