Worcester Bosch
Worcester Bosch 87161157540 Flow Sensor
At a glance
- Part type: Flow sensor assembly
- Also known as WB87161157540, 1015137, Z87161157540
£37.18
£30.98 ex. VAT · VAT at 20%
Call 01302 279234 to check availability
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The UCP flow sensor assembly is a Worcester Bosch component used to detect water movement through the domestic hot water circuit of a boiler. It signals the control board when a tap is opened, allowing the appliance to start and modulate the burner for hot water demand. This item is supplied as an unbranded alternative to the Worcester Bosch flow sensor assembly 87161157540 (448429).
Signs this part needs replacing
- No hot water production when a tap is opened, with the boiler failing to respond to demand
- Hot water temperature fluctuating or running cold intermittently during draw-off
- Boiler firing briefly then shutting down on a hot water call
- Fault codes or lockouts logged against the domestic hot water circuit
- Visible scale, debris or damage around the sensor body or its connections
Before you order
- Check the boiler's serial number and parts listing to confirm 87161157540 is the correct flow sensor for your appliance
- Compare the alternative numbers 1015137, WB87161157540, Z87161157540 and 448429 against the number on the original component
- Inspect the sensor housing and any sealing washers or O-rings on removal, as these may need renewing at the same time
- Isolate the appliance and follow the manufacturer's instructions when replacing components in the water circuit
Mechanical
| Part type | Flow sensor assembly |
|---|
Compliance
| Manufacturer part number (MPN) | 87161157540 |
|---|---|
| Barcode / EAN | 4047416994567 |
| Commodity code | 8403 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | WB87161157540, 1015137, Z87161157540 |
No fitment data held for this part.
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.
No documents held for this part. The technical team will source them from the manufacturer — usually the same working day.
No technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.