Product information:

Air pump 24V, assy.1881

This 24V air pump is compatible with AUTOTERM Air 4D heaters equipped with the following control units (assy numbers): 

• 2503
• 3033
• 4139
• 4188

Suitable for heaters with the following serial numbers:

• 3031xxxxxxx
• 3700xxxxx
• 4137xxxxxxx
• 4186xxxxxxx
• 4761xxxxxxx