Description
Genuine Worcester Bosch Washer – 87101031550 (GC H31-952)
The Worcester Bosch 87101031550 Washer is a critical sealing component used across a vast range of Worcester Greenstar appliances. Whether you are performing a full annual service or repairing a specific hydraulic component, using a genuine OEM washer is essential to ensure a high-pressure seal that stands the test of time.
This specific washer (Gas Council No: H31-952) is manufactured from high-grade materials designed to withstand the thermal cycling and chemical environment inside a modern condensing boiler.
Greenstar 8000 LIFE Series
GR8300iW 30C (NG/LPG): 47-800-18 / 47-800-23
GR8300iW 35C (NG/LPG): 47-800-17 / 47-800-22
GR8300iW 40C (NG/LPG): 47-800-16 / 47-800-21
GR8300iW 45C (NG/LPG): 47-800-15 / 47-800-20
GR8300iW 50C (NG/LPG): 47-800-14 / 47-800-19
GR8300iW 30R Regular (NG/LPG): 41-406-98 / 41-800-04
GR8300iW 35R Regular (NG/LPG): 41-406-97 / 41-800-03
GR8300iW 40R Regular (NG/LPG): 41-406-96 / 41-800-02
GR8300iW 45R Regular (NG/LPG): 41-406-95 / 41-800-01
GR8300iW 50R Regular (NG/LPG): 41-406-94 / 41-406-99
GR8300iW 30S System (NG/LPG): 41-406-91 / 41-406-93
GR8300iW 35P System (NG/LPG): 41-406-90 / 41-406-92
Greenstar 8000 STYLE Series
GR8700iW 30C (NG/LPG): 47-800-03 / 47-800-13
GR8700iW 30CB (NG/LPG): 47-406-97 / 47-800-08
GR8700iW 35C (NG/LPG): 47-800-02 / 47-800-12
GR8700iW 35CB (NG/LPG): 47-406-96 / 47-800-07
GR8700iW 40C (NG/LPG): 47-800-01 / 47-800-11
GR8700iW 40CB (NG/LPG): 47-406-95 / 47-800-06
GR8700iW 45C (NG/LPG): 47-406-99 / 47-800-10
GR8700iW 45CB (NG/LPG): 47-406-94 / 47-800-05
GR8700iW 50C (NG/LPG): 47-406-98 / 47-800-09
GR8700iW 50CB (NG/LPG): 47-406-93 / 47-800-04
GR8700iW 30P / 30SB: 41-406-87 / 41-406-83
GR8700iW 35S / 35SB: 41-406-86 / 41-406-82
Greenstar CDI Classic & ERP Series
29 CDI Classic (NG/LPG): 47-406-34 / 47-406-35 / 47-406-65 / 47-406-66
30 CDI Classic (Regular/System): 41-406-33 / 41-406-34 / 41-406-37 / 41-406-38
34 CDI Classic (NG/LPG): 47-406-36 / 47-406-37 / 47-406-67 / 47-406-68
35 CDI Classic System: 41-406-39 / 41-406-40
38 CDI Classic (NG/LPG): 47-406-38 / 47-406-39 / 47-406-69 / 47-406-70
40 CDI Classic Regular: 41-406-35 / 41-406-36
42 CDI Classic (NG/LPG): 47-406-10 / 47-406-11 / 47-406-71 / 47-406-72
25 CDI / 27 CDI / 30 CDI / 35 CDI / 37 CDI / 40 CDI: 47-311-92, 47-406-12, 47-311-93, 47-311-94, 47-406-08, 47-311-95
Highflow & Floor Standing (FS) Series
Highflow 440 CDI ErP: 47-406-89 / 47-406-90
Highflow 550 CDI ErP: 47-406-91 / 47-406-92
FS 30CDI Regular ErP: 41-406-62 / 41-406-63
FS 42CDI Regular ErP: 41-406-64 / 41-406-65
Please note: Before placing your order you must check your part matches the Manufacturer Part Number stated above.
For any Worcester Products related products please clink below link :Worcester Spares
For any Worcester Fans please clink below link :Worcester Fan
Worcester PCBs please clink below link :Worcester PCB
Worcester Pump please clink below link :Worcester Pump
Prices: Please note all prices are inclusive of VAT.
At Heating and catering parts,
We certainly strive to provide the best possible customer experience. Consequently, we understand that sometimes a product may not meet your expectations or requirements. That is why we offer a comprehensive 30-day return policy to ensure your satisfaction. Please read our full Return Policy
We appreciate you buying from our store. Usually, If your order is received by 1:00 p.m. EST (Monday–Friday), we will ship the item the same day. You can count on us to deliver quickly and safely. In other words, we take pride in our prompt and trustworthy service and will do everything we can to ensure the safe arrival of your package.
Please note that weekends are not included in our next-day delivery guarantee. Delivery for orders placed on Fridays (the next day) is on the following Monday. At the same time select the Saturday delivery option at checkout if you’d like your purchases delivered on a weekend day.
In a word thank you for choosing us!






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