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Gaggia Thermostat Replacement Kit (107°C + 145°C)

107 °C brew + 145 °C steam pair
M4 brass thread, drop-in fit
Fits 3 Gaggia Classic generations
Before you order — safety firstDisconnect the machine from power and let it cool fully before opening the case. Thermostats sit on the 230V boiler circuit. Verify with a multimeter that no terminals are live before removing wires. If you are not comfortable working with mains electricity, ask a qualified person to fit this kit for you.
Brew thermostat107 °C cut-off
Steam thermostat145 °C cut-off
Mounting threadM4 male (brass body)
Springreplacement boiler pressure spring
Thermal greaseincluded syringe
107 degree brew thermostat and 145 degree steam thermostat for a compatible Gaggia machine

Two temperatures. Two distinct jobs.

The kit pairs a 107°C brew thermostat with a 145°C steam thermostat for the two temperature circuits in a compatible Gaggia machine.

Close view of the M4 brass mounting thread on a Gaggia thermostat

Made for an M4 threaded fitting.

Both thermostats use an M4 mounting thread. Compare the thread and mounting position on your existing thermostat before ordering.

Brass thermostat mounting surface beside the included thermal grease

A clean thermal connection matters.

The included thermal grease fills small surface gaps between the thermostat and its mounting point for more consistent heat transfer.

Gaggia thermostat terminals stamped 107 and 145

Identify each thermostat before fitting.

The temperature value is stamped directly on the terminal. Match each thermostat to the correct circuit before reconnecting the wiring.

Complete Gaggia thermostat replacement set with two thermostats, spring, and thermal grease

The parts needed for the replacement.

The set includes one 107°C thermostat, one 145°C thermostat, one spring, and thermal grease.

Two Gaggia thermostats showing their M4 threads, brass bodies, terminals, and temperature stamps

Check the thread and terminal before ordering.

Confirm the M4 thread, temperature markings, terminal shape, and mounting arrangement against the parts currently fitted to your machine.

What’s in the kit

  • 1× 107°C brew thermostat
  • 1× 145°C steam thermostat
  • 1× replacement spring
  • 1× thermal grease syringe

What you’ll need

  • T15 Torx
  • Multimeter
  • Thermal grease applicator
  • Needle-nose pliers
Classic Pre 2015Classic Pro 2018 19Evo Pro 2023

After installation

Final safety reminderDisconnect the machine from power and allow it to cool fully before inspection or replacement. Electrical and boiler work should be completed by a competent person. HomeBaristaMods is not responsible for damage caused by improper installation.