Description
Baxi 7812538 Flow Hydroblock Assembly – Genuine Spare Part
This is a genuine Baxi Flow Hydroblock Assembly, part number 7812538, supplied as a complete factory assembly. The flow hydroblock forms part of the boiler’s hydraulic circuit, managing water flow through the appliance, and is a common replacement item when dealing with leaks, flow faults, restricted circulation, or damaged housings.
Because it’s supplied as a full assembly rather than individual components, fitting is quicker and more reliable than rebuilding the original unit.
Compatible Appliances
Fits the following Baxi appliances:
Assure range
- Assure 500 2 ISS 02 Combi NG
- Assure 500 2 ISS 05 Combi NG
- Assure 500 530 2 Front Facing
- Assure 500 530 2 Internal Fit
- Assure 524 2 Combi NG
- Assure 530 2 Combi NG
- Assure 536 2 Combi NG
Baxi 400 range
- Baxi 424 2 Combi LPG
- Baxi 424 2 Combi NG
- Baxi 424 2.1 Combi NG
- Baxi 430 2 Combi LPG
- Baxi 430 2 Combi NG
- Baxi 430 2.1 Combi NG
- Baxi 436 2.1 Combi NG
Baxi 600 range
- Baxi 600 2 624 NG
- Baxi 630 2 Combi NG
- Baxi 636 2 Combi NG
Baxi 800 range
- Baxi 800 2 824 NG
- Baxi 800 2 830 NG
- Baxi 836 2 Combi NG
Please note: Installation should only be carried out by a qualified Gas Safe registered engineer. Always isolate the gas, electrical supply and water before removing any hydraulic component, and check the part number against your appliance’s data badge before ordering.







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