Bambu Lab P1 Series TH Board The Toolhead Board Behind the P1P & P1S.
Genuine Replacement Toolhead Board for the P1 Series.
The TH Board — short for toolhead board — is the PCB that lives in the P1P and P1S print head. It ties together the hardware on the moving toolhead: the extruder motor, the hotend heater and thermistor, the fans, and the sensors, and connects the whole head back to the printer over a flex cable. Its onboard motor driver runs the extruder directly. When something on the head stops responding and the wiring checks out, this board is usually the part to swap. Order it as a genuine Bambu Lab replacement. Full specifications →
Genuine Bambu part, stocked in the USA — ships from Rev1. Not sure the board is the fault? Call (248) 707-2950.
Genuine Bambu Lab Part. US Stock, Fast Shipping.
The P1 Series TH Board is an authentic Bambu Lab replacement part, supplied and supported by Rev1 Technologies — your authorized Bambu Lab reseller in Auburn Hills, Michigan. Not a third-party clone.
One Board Runs the Print Head.
On the P1P and P1S, the toolhead carries the extruder, the hotend, the fans, and the sensors — and it moves fast. The TH Board is the hub that lets all of it run over a single flex cable instead of a thick wiring loom. It even has an onboard motor driver that powers the extruder directly, plus the connectors for the heater, thermistor, and fans. It’s the difference between a print head that just responds and one that has to be micromanaged.
Every Toolhead Connector, In One Place.
Along the board are the FPC connector for the flex cable to the mainboard and the JST headers for the extruder motor and the rest of the head. Because it’s the genuine Bambu part, every connector, the layout, and the motor-control electronics match the original exactly — the plugs land where they should and the flex cable seats the same way. Follow Bambu’s guide, transfer the connectors, and the head is back in service.
Built for the P1 Series.
This is the toolhead board for Bambu Lab’s P1 series — the P1P and P1S. The A1, A1 mini, and X1 series use their own toolhead boards, so if you run one of those, confirm the correct part with Rev1 before ordering — they are not interchangeable. For a P1P or P1S, this is the genuine TH board. Not sure whether the board or something else on the head is the fault? We’ll help you check.
Bambu Lab P1 Series TH Board — Specs
WHY REV1 TECH
Authorized Bambu Lab Reseller. Additive Specialists.
Rev1 Technologies is an authorized Bambu Lab reseller in Auburn Hills, MI, supporting engineers, print farms, and manufacturers across the USA.
We stock the Bambu ecosystem and support it — from printers and filament to the spare parts that keep them running. Buy the replacement from a team that can help you fit it.
FAQ
Frequently Asked Questions
What is the TH Board?
TH stands for toolhead. It’s the PCB inside the P1P and P1S print head that connects the extruder motor, the hotend heater and thermistor, the fans, and the sensors, and links the whole head to the printer over a flex cable. An onboard driver powers the extruder motor. It’s sold as a genuine replacement part.
Which printers does it fit?
The Bambu Lab P1 series — the P1P and P1S. The A1, A1 mini, and X1 series use their own toolhead boards, so if you run one of those, contact Rev1 and we’ll confirm the right part before you order. They aren’t interchangeable.
When would I need to replace it?
Usually when something on the toolhead — the extruder motor, a fan, the heater, or the thermistor — stops responding or reporting, and the components and wiring themselves check out. That pattern often points to the toolhead board rather than the individual part.
What connects to it?
The extruder motor, the hotend heater and thermistor, the part-cooling and hotend fans, and the head’s sensors all plug into the board, and a flex (FPC) cable carries everything back to the mainboard. You transfer these connectors from the old board to the new one during replacement.
Is this a genuine Bambu Lab part?
Yes. Rev1 Technologies is an authorized Bambu Lab reseller, and this is a genuine Bambu Lab replacement — not a third-party clone. On a toolhead board, matching connectors, layout, and motor-control electronics is what makes the swap drop in and work, which is why the OEM part matters.
Can Rev1 help me install it?
We can confirm the right board for your printer and symptom and point you to Bambu Lab’s official replacement guide. For US customers, buying the spare from Rev1 means fast domestic shipping and a real person to call at (248) 707-2950.