3-way valve
Part number (MPN)
8737604397
Check compatibility
Type your appliance model: we compare it with the 2 appliances in our sources.
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Parts for the same appliances
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OEM Replacement Part & Compatibility Table
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Guide price (£)
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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
No appliance matches the filter.
Always check the model and serial number on the data plate before ordering.
Frequently asked questions
Which appliances does 8737604397 fit?
The sources we checked list 8737604397 (3-way valve, Worcester Bosch) for: GR1000W 24 C NG, GR1000W 30 C NG. Always check the model and serial number on the data plate before ordering.
Does 8737604397 have equivalent or superseded part numbers?
The sources we checked list no equivalents for 8737604397. Ask a Worcester Bosch stockist to confirm.
What should I check before fitting 8737604397?
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.