Genuine AUTOTERM Air 2D Combustion Chamber — Part No. ASSY.2578

When your diesel heater starts throwing error codes, struggling to ignite, or producing smoke on start-up, the combustion chamber is usually the culprit. This genuine AUTOTERM replacement part restores your Air 2D heater to factory performance — no compromise, no guesswork.

Fits all modifications of the AUTOTERM Air 2D diesel air heater, so whether you're running an older unit or a recent model, this is the correct part.

Why replace the combustion chamber?
Over time, carbon deposits and thermal cycling wear down the combustion chamber lining. The symptoms are familiar: hard starts, excessive smoke, inconsistent heat output, or the heater cutting out mid-run. Replacing the chamber as part of a service cycle is the most reliable fix — and it extends the life of the whole unit.

Supplied complete with glow plug evaporation screen
This part comes with the Glow Plug Evaporation Screen (ASSY.869) pre-installed, so you have everything you need in one package. One less thing to source separately.

Compatible with:

AUTOTERM Air 2D Diesel Air Heater (all modifications)


What's included:

Genuine AUTOTERM combustion chamber (ASSY.2578)
Glow plug evaporation screen (ASSY.869) pre-installed


Product details:

Part number: ASSY.2578
Genuine AUTOTERM OEM replacement part
Manufactured to original equipment specifications
Direct drop-in replacement — no modification required