Baxi
Baxi Filter Assembly 830 Combi 7734642
Baxi 7734642 filter assembly for 830 Combi and 818 System boilers, also listed under part number 1135038.
At a glance
- Part type: Filter assembly
- Also known as 1135038
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£267.60
£223.00 ex. VAT · VAT at 20%
Same-day dispatch
Ordered by 4pm Mon–Fri, 10:30am Sat.
30-day returns
Unused, in original packaging.
What it is
The Baxi 7734642 is a filter assembly used on Baxi 830 Combi and 818 System appliances. It sits in the heating circuit and traps magnetite, sludge and general system debris before it can circulate through the heat exchanger and other hydraulic components. Keeping the filter clear protects flow rates and helps the appliance run at its designed output.
Signs this part needs replacing
- Reduced flow rate at hot water outlets or across the heating circuit
- Black magnetite or sludge visible when the filter housing is opened
- Noisy operation from the pump or heat exchanger
- Repeated lockouts or overheat faults during normal use
- Radiators that stay cold at the bottom after bleeding
Before you order
- Check the GC number or serial number on the appliance data badge against the compatibility list.
- The alternative number 1135038 may appear on older stock or documentation for the same assembly.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Filter assembly |
|---|
Compliance
| Manufacturer part number (MPN) | 7734642 |
|---|---|
| Commodity code | 8421 21 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 1135038 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI 818 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-470-99 | 41-470-99 | — | — |
| BAXI 818 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-470-99 | 41-470-99 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING AC | 41-470-73 | 41-470-73 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING BC | 41-470-73 | 41-470-73 | — | — |
| BAXI 818 SYSTEM Erp - SERIAL NUMBER ENDING CC | 41-470-73 | 41-470-73 | — | — |
| BAXI 824 COMBI 2 | 47-077-63 | 47-077-63 | — | — |
| BAXI 824 COMBI 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 47-077-63 | 47-077-63 | — | — |
| BAXI 824 SYSTEM 2 - FRONT FACING ANALOGUE PRESSURE GAUGE | 41-884-09 | 41-884-09 | — | — |
| BAXI 824 SYSTEM 2 - INTERNAL FIT PRESSURE GAUGE | 41-884-09 | 41-884-09 | — | — |
| BAXI 824 SYSTEM Erp - SERIAL NUMBER ENDING AC | 41-470-74 | 41-470-74 | — | — |
Showing 10 of 37 compatible appliances.
Documents & drawings
Everything we hold for this part. Where a document exists but we don't hold it, the technical team will source it from the manufacturer — usually the same working day.
BAXI appliance manual — 818 SYSTEM Erp - SERIAL NUMBER ENDING AC (GC 41-470-73), 824 SYSTEM Erp - SERIAL NUMBER ENDING AC (GC 41-470-74)
manualmanualBAXI appliance manual — 818 SYSTEM Erp - SERIAL NUMBER ENDING BC (GC 41-470-73), 818 SYSTEM Erp - SERIAL NUMBER ENDING CC (GC 41-470-73), 824 SYSTEM Erp - SERIAL NUMBER ENDING BC (GC 41-470-74), 824 SYSTEM Erp - SERIAL NUMBER ENDING CC (GC 41-470-74)
manualmanualBAXI appliance manual — 825 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-38), 830 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-39), 836 COMBI Erp - SERIAL NUMBER ENDING AC (GC 47-077-40)
manualmanualBAXI appliance manual — 825 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-38), 825 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-38), 830 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-39), 830 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-39), 836 COMBI Erp - SERIAL NUMBER ENDING BC (GC 47-077-40), 836 COMBI Erp - SERIAL NUMBER ENDING CC (GC 47-077-40)
manualmanualBAXI appliance manual — PLATINUM + 40 COMBI (GC 47-077-41)
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