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Worcester BoschBoilers and heatingSeals and gaskets

Seal siphon

Part number (MPN)
87186847420
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Type your appliance model: we compare it with the 13 appliances in our sources.

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OEM Replacement Part & Compatibility Table

Brand
Worcester Bosch
Category
Boilers and heating
Guide price (£)
Not available: check the current price with the seller
Source
manufacturer reference
checked 2026-11-05
Fitting notes

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate.

Compatible appliances

Always check the model and serial number on the data plate before ordering.

Frequently asked questions

Which appliances does 87186847420 fit?

The sources we checked list 87186847420 (Seal siphon, Worcester Bosch) for: 28CDI COMPACT ERP, 36CDI COMPACT ERP, 28CDI COMPACT LPG ERP, 32CDI COMPACT LPG ERP, 36CDI COMPACT LPG ERP, 27I SYSTEM COMPACT ERP, 27I SYSTEM COMPACT LPG ERP, 30I SYSTEM COMPACT ERP, 30I SYSTEM COMPACT LPG ERP, 27RI COMPACT ERP, 27RI COMPACT LPG ERP, 30RI COMPACT ERP, 30RI COMPACT LPG ERP. Always check the model and serial number on the data plate before ordering.

Does 87186847420 have equivalent or superseded part numbers?

The sources we checked list no equivalents for 87186847420. Ask a Worcester Bosch stockist to confirm.

What should I check before fitting 87186847420?

Work on gas appliances must be carried out by a Gas Safe registered engineer. Check the model and serial number on the boiler data plate.

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Some lists are dated and the part may have been superseded. Information only, compatibility not guaranteed.