Generac Extreme Cold Weather Kit For 6.8L; 150KwProduct Description Extreme Cold Weather Engine Block Heater for Generac Automatic Standby Generators, 6. 8L 150 Watt. Whether it's a standby power system for a large data center, a backup generator powering the family home through an outage, portable generators powering tools at the job site, or the cleaning power of a pressure washer, Generac meets the power needs of consumers and businesses alike. Across the country and around the world. Product