Crankcase electric heater

Bosch crankcase electric heater (PN 8733956381) provides localized crankcase heating for HVAC and refrigeration compressors, helping maintain oil temperature in low-ambient conditions to reduce oil migration and support reliable compressor start-up. Its compact electric design suits retrofit or OEM parts inventories, simplifying electrical connection and service access in commercial heat-pump, rooftop, and refrigeration equipment. Note: a Bosch North America product page or datasheet for PN 8733956381 was not found; this description is based on the part name and category. (bosch-homecomfort.com)