Description

Worcester 87186510420 Pressure Sensor – Genuine Refurbished Part

The Worcester Greenstar pressure sensor 87186510420 helps your boiler monitor system pressure accurately, so it can run safely and efficiently. When the sensor starts to fail, it may trigger pressure-related faults or cause unreliable boiler operation. Therefore, replacing it with this refurbished unit helps restore correct pressure readings, improve system performance, and support dependable heating and hot water operation throughout the day.

Compatible Boilers

This part is compatible with the following models:

GR4700iW S Series

• 12S LPG – GC No. 41-800-08
• 12S NG – GC No. 41-800-07
• 15S LPG – GC No. 41-800-10
• 15S NG – GC No. 41-800-09
• 18S LPG – GC No. 41-800-12
• 18S NG – GC No. 41-800-11
• 21S LPG – GC No. 41-800-14
• 21S NG – GC No. 41-800-13
• 24S LPG – GC No. 41-800-16
• 24S NG – GC No. 41-800-15

GR4700iW C Series

• 25C LPG – GC No. 47-800-31
• 25C NG – GC No. 47-800-30
• 30C LPG – GC No. 47-800-33
• 30C NG – GC No. 47-800-32

Greenstar Life GR8300iW C Series

• 30C LPG – GC No. 47-800-23
• 30C NG – GC No. 47-800-18
• 35C LPG – GC No. 47-800-22
• 35C NG – GC No. 47-800-17
• 40C LPG – GC No. 47-800-21
• 40C NG – GC No. 47-800-16
• 45C LPG – GC No. 47-800-20
• 45C NG – GC No. 47-800-15
• 50C LPG – GC No. 47-800-19
• 50C NG – GC No. 47-800-14

Greenstar Life GR8300iW R Series

• 30R LPG – GC No. 41-800-04
• 30R NG – GC No. 41-406-98
• 35R LPG – GC No. 41-800-03
• 35R NG – GC No. 41-406-97
• 40R LPG – GC No. 41-800-02
• 40R NG – GC No. 41-406-96
• 45R LPG – GC No. 41-800-01
• 45R NG – GC No. 41-406-95
• 50R LPG – GC No. 41-406-99
• 50R NG – GC No. 41-406-94

Greenstar 8000 Life GR8300iW Series

• 30S LPG – GC No. 41-406-93
• 30S NG – GC No. 41-406-91
• 35P LPG – GC No. 41-406-92
• 35P NG – GC No. 41-406-90

Greenstar 8000 Style GR8700iW C Series

• 30C LPG – GC No. 47-800-13
• 30C NG – GC No. 47-800-03
• 35C LPG – GC No. 47-800-12
• 35C NG – GC No. 47-800-02
• 40C LPG – GC No. 47-800-11
• 40C NG – GC No. 47-800-01
• 45C LPG – GC No. 47-800-10
• 45C NG – GC No. 47-406-99
• 50C LPG – GC No. 47-800-09
• 50C NG – GC No. 47-406-98

Greenstar 8000 Style GR8700iW CB Series

• 30CB LPG – GC No. 47-800-08
• 30CB NG – GC No. 47-406-97
• 35CB LPG – GC No. 47-800-07
• 35CB NG – GC No. 47-406-96
• 40CB LPG – GC No. 47-800-06
• 40CB NG – GC No. 47-406-95
• 45CB LPG – GC No. 47-800-05
• 45CB NG – GC No. 47-406-94
• 50CB LPG – GC No. 47-800-04
• 50CB NG – GC No. 47-406-93

Greenstar 8000 Style GR8700iW P Series

• 30P LPG – GC No. 41-406-89
• 30P NG – GC No. 41-406-87

Greenstar 8000 Style GR8700iW S Series

• 35S LPG – GC No. 41-406-88
• 35S NG – GC No. 41-406-86

Greenstar 8000 Style GR8700iW SB Series

• 30SB LPG – GC No. 41-406-85
• 30SB NG – GC No. 41-406-83
• 35SB LPG – GC No. 41-406-84
• 35SB NG – GC No. 41-406-82

Why Choose This Product?

This refurbished pressure sensor offers a practical and cost-effective way to restore accurate boiler pressure monitoring. Each unit is checked before dispatch, so you can replace a faulty sensor with more confidence and keep repair costs under control.

Delivery and Return

Order before 1 PM for same-day dispatch with standard and next-day delivery options available. Returns are accepted within 30 days if the part remains unused and in its original packaging. Use a Gas Safe registered engineer for installation and warranty support.

Frequently Asked Questions

1. What does this pressure sensor do?
This sensor monitors the boiler’s system pressure and sends the correct reading to the boiler controls. As a result, it helps the appliance operate safely and respond properly to pressure changes.

2. What happens when a pressure sensor becomes faulty?
A faulty sensor can cause incorrect pressure readings, warning faults, or inconsistent boiler operation. Therefore, replacing it can help restore normal performance and improve system reliability.

3. Is this part compatible with all Worcester Greenstar boilers?
No, it fits selected Worcester Greenstar models that use part number 87186510420. So, always match the part number and appliance details before placing your order.

4. Why choose a refurbished pressure sensor?
A refurbished part gives you a more affordable way to repair the boiler without overspending. In addition, it helps reduce waste while still offering a practical replacement option.

5. Will this part help fix pressure-related boiler faults?
It can help where the existing pressure sensor has failed or is reading incorrectly. However, a qualified engineer should confirm the fault before replacing any boiler component.