Buderus
Buderus Sensor G1/4 Inch 45 LG 63041677
Buderus G1/4 inch threaded temperature sensor with a 45 mm probe length, part number 63041677.
At a glance
- Also known as 2241794
£63.48
£52.90 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 Buderus Sensor G1/4 Inch 45 LG is a threaded temperature sensor (thermistor) with a G1/4 inch connection and a 45 mm probe length. It is supplied by Buderus as part number 63041677 and is used across the GB312 and GB402 oil boiler ranges. The sensor reports temperature back to the boiler control, which uses the signal for monitoring and modulation of the appliance.
Signs this part needs replacing
- Temperature readings at the boiler control are erratic, implausible or clearly out of range.
- The appliance locks out or shuts down with a sensor-related fault code.
- Boiler modulation behaves abnormally, cycling or failing to respond to demand.
- Fault persists after checking the sensor wiring and plug connections.
Before you order
- Confirm the existing sensor is marked with the 45 mm probe length and a G1/4 inch thread.
- Check the appliance model and version against the fitment list, as GB312 and GB402 variants differ.
- Inspect the sensor lead and plug for damage, as a wiring fault can mimic sensor failure.
- Verify the part number 63041677 on the existing component or the boiler documentation.
Compliance
| Barcode / EAN | 4010009945413 |
|---|---|
| Alternative numbers | 2241794 |
| Make | Model / assembly | Reference | Years | Fitment |
|---|---|---|---|---|
| BUDERUS GB312-120, G20 BE V2 - 7747007569 | — | — | — | |
| BUDERUS GB312-120, G20 V2 - 63045623 | — | — | — | |
| BUDERUS GB312-120, G25 NL V2 - 63045635 | — | — | — | |
| BUDERUS GB312-120, G25 V2 - 63045629 | — | — | — | |
| BUDERUS GB312-160, G20 BE V2 - 7747007570 | — | — | — | |
| BUDERUS GB312-160, G20 V2 - 7747005629 | — | — | — | |
| BUDERUS GB312-160, G25 NL V2 - 7747005637 | — | — | — | |
| BUDERUS GB312-160, G25 V2 - 7747005633 | — | — | — | |
| BUDERUS GB312-200, G20 BE V2 - 7747007571 | — | — | — | |
| BUDERUS GB312-200, G20 V2 - 7747005630 | — | — | — |
Showing 10 of 29 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.
BUDERUS appliance manual — GB312-120, G20 BE V2 - 7747007569, GB312-120, G20 V2 - 63045623, GB312-120, G25 NL V2 - 63045635, GB312-120, G25 V2 - 63045629, GB312-160, G20 BE V2 - 7747007570, GB312-160, G20 V2 - 7747005629, GB312-160, G25 NL V2 - 7747005637, GB312-160, G25 V2 - 7747005633, GB312-200, G20 BE V2 - 7747007571, GB312-200, G20 V2 - 7747005630, GB312-200, G25 NL V2 - 7747005638, GB312-200, G25 V2 - 7747005634, GB312-240, G20 BE V2 - 7747007572, GB312-240, G20 V2 - 7747005631, GB312-240, G25 NL V2 - 7747005639, GB312-240, G25 V2 - 7747005635, GB312-280, G20 BE V2 - 7747007573, GB312-280, G20 V2 - 7747005632, GB312-280, G25 NL V2 - 7747005640, GB312-280, G25 V2 - 7747005636, GB312-90, G20 BE V2 - 7747007568, GB312-90, G20 V2 - 63045622, GB312-90, G25 NL V2 - 63045634, GB312-90, G25 V2 - 63045628
manualmanualBUDERUS appliance manual — GB402-320 G20 GB - 7736613538, GB402-395 G20 GB - 7736613539, GB402-470 G20 GB - 7736613540, GB402-545 G20 GB - 7736613541, GB402-620 G20 GB - 7736613542
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