Description
Baxi 5132455 Hydraulic Inlet Assembly 40kW – Genuine New
The Baxi 5132455 hydraulic inlet is a genuine brand-new 40kW hydraulic assembly used across selected Baxi, Potterton and Main boilers.
It is listed for popular 40kW appliances including the Baxi Duo-tec 40, Baxi Platinum 40 and Potterton Titanium 40 ranges.
Because several compatible boilers use different production revisions and serial-number endings, the exact appliance details should always be checked before ordering.
Compatible Baxi Boilers
Baxi Duo-tec 40 HE A
- Duo Tec 40 HE A – Issue 8 – GC No. 47-075-38
Baxi Duo-tec 40 Combi ErP
- Duo Tec 40 Combi ErP – Serial No. Ending AC, Issue 3 – GC No. 47-077-03 AC
- Duo Tec 40 Combi ErP – Serial No. Ending BC, Issue 2 – GC No. 47-077-03 BC
- Duo Tec 40 Combi ErP – Serial No. Ending CC – GC No. 47-077-03 CC
Compatible Baxi Platinum Boilers
Baxi Platinum Combi 40 HE A
- Platinum Combi 40 HE A – Issue 4 – GC No. 47-075-34
Compatible Baxi 40 Combi ERP Boilers
Baxi 40 Combi ERP
- 40 Combi ErP – Serial No. Ending AC, Issue 2 – GC No. 47-077-07 AC
- 40 Combi ERP – Serial No. Ending CC – GC No. 47-077-07 CC
- 40 Combi ERP – Serial No. Ending DC – GC No. 47-077-07 DC
Compatible Potterton Boilers
Potterton Titanium 40
- Titanium 40 – GC No. 47-393-42
Potterton Titanium 40 Combi ErP
- Titanium 40 Combi ErP – Serial No. Ending AC – GC No. 47-393-53
- Titanium 40 Combi ErP – Serial No. Ending BC & CC – GC No. 47-393-53 BC
- Titanium 40 Combi ErP – Serial No. Ending DC – GC No. 47-393-53 DC
Compatible Main Boilers
Part number 5132455 is also listed under Main as:
Hydraulic Inlet (40kW)
However, no Main boiler model compatibility was supplied in the source information above.
Therefore, if purchasing for a Main boiler, confirm the exact appliance model, GC number and part number before ordering.
What Does the Hydraulic Inlet Assembly Do?
The hydraulic inlet assembly forms part of the boiler’s internal water-management system.
Depending on the appliance design, it can help manage:
- Cold-water inlet flow
- Domestic hot water supply
- Hydraulic distribution
- Water pressure
- Flow through related hydraulic components
- Connections between internal boiler circuits
Therefore, damage or leakage from the hydraulic assembly can affect both boiler performance and domestic hot water operation.






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