Webasto Thermo Pro 90 Control unit SG1577 24v

The Webasto Thermo Pro 90 Control Unit SG1577 is a 24-volt automotive climate control component designed for reliable engine-off heating and interior comfort. This standard version, model SG1577 with 1317643E marked on the unit, provides precise control of pre-heating and auxiliary heater functions. Built to endure automotive environments, it integrates with compatible Webasto heating systems and offers straightforward installation for 24V vehicle fleets. Ideal for owners seeking consistent cabin warmth, reduced cold-start wear, and efficient heater operation. Note: verify compatibility with your vehicle’s electrical system and heater model before installation.