Baxi
Baxi 720538401 Potterton, Main & Broag Remeha Coverplate Heat Exchanger Gasket
Baxi coverplate gasket for heat exchanger assemblies, supplied as a pack of 10 under part number 720538401.
At a glance
- Part type: Coverplate gasket, heat exchanger
- Also known as BAXI720538401
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
£7.92
£6.60 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 720538401 is a coverplate gasket for the heat exchanger assembly on Baxi heating appliances. It sits between the heat exchanger body and its coverplate, sealing the joint so that water stays inside the waterways under normal operating pressure and temperature. The gasket is supplied as a pack of 10, which covers multiple joints or allows stock to be held for repeat work.
Signs this part needs replacing
- Water weeping or dripping from the heat exchanger coverplate joint
- Staining, crusting or limescale trails around the coverplate edge
- A gasket that has hardened, flattened, cracked or become brittle with age
- System pressure dropping with no other obvious cause
- Black or rusty residue at the joint when the coverplate is lifted
Before you order
- Match the number 720538401 against the marking on the old gasket or the appliance parts list.
- Note the boiler's GC number and serial number to confirm the correct variant.
- The gasket is supplied in a pack of 10, so check how many joints are being resealed.
- Isolate the appliance, drain the relevant section and let it cool before any work begins.
- This part is fitted to a gas appliance; installation must be carried out by a Gas Safe registered engineer.
Mechanical
| Part type | Gaskets, Seals & Washers |
|---|---|
| Length | 0.1mm |
| Width | 0.1mm |
| Depth | 0.1mm |
Compliance
| Manufacturer part number (MPN) | 720538401 |
|---|---|
| GC number | H39-119 |
| Barcode / EAN | 720538401 |
| Commodity code | 8484 90 00 00 |
| GPC classification | Household Boilers/Furnaces/Tank Water Heaters Replacement Parts/Accessories |
| Alternative numbers | 7625878413573, BAXI720538401, 265075904502 |
Logistics
| Pack quantity | 10 |
|---|
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BAXI AVANTA EXCLUSIVE 28C | 47-075-74 | 47-075-74 | — | — |
| BAXI AVANTA EXCLUSIVE 35C | 47-075-75 | 47-075-75 | — | — |
| BAXI AVANTA EXCLUSIVE 39C | 47-075-76 | 47-075-76 | — | — |
| BAXI AVANTA HEAT ONLY 15H | 41-075-95 | 41-075-95 | — | — |
| BAXI AVANTA HEAT ONLY 18H | 41-075-96 | 41-075-96 | — | — |
| BAXI AVANTA HEAT ONLY 24H | 41-075-97 | 41-075-97 | — | — |
| BAXI AVANTA HEAT ONLY 30H | 41-075-98 | 41-075-98 | — | — |
| BAXI AVANTA PLUS COMBI 24C | 47-075-77 | 47-075-77 | — | — |
| BAXI AVANTA PLUS COMBI 28C | 47-075-78 | 47-075-78 | — | — |
| BAXI AVANTA PLUS COMBI 35C | 47-075-79 | 47-075-79 | — | — |
Showing 10 of 26 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 — AVANTA EXCLUSIVE 28C (GC 47-075-74), AVANTA EXCLUSIVE 35C (GC 47-075-75), AVANTA EXCLUSIVE 39C (GC 47-075-76)
manualmanualBAXI appliance manual — AVANTA HEAT ONLY 15H (GC 41-075-95), AVANTA HEAT ONLY 18H (GC 41-075-96), AVANTA HEAT ONLY 24H (GC 41-075-97), AVANTA HEAT ONLY 30H (GC 41-075-98)
manualmanualBAXI appliance manual — AVANTA PLUS COMBI 24C (GC 47-075-77), AVANTA PLUS COMBI 28C (GC 47-075-78), AVANTA PLUS COMBI 35C (GC 47-075-79), AVANTA PLUS COMBI 39C (GC 47-075-80), AVANTA PLUS SYSTEM 18S (GC 41-075-99), AVANTA PLUS SYSTEM 24S (GC 41-077-93), AVANTA PLUS SYSTEM 30S (GC 41-077-94)
manualNo technical questions yet for this part.
Not sure which part?
Search by part number, product name or brand — our technical team confirms fitment before anything is dispatched.