Hotstart block heaters are built to keep diesel, propane, and gas generators ready for cold starts and critical operation, with multiple models available for different engine sizes, voltage needs, and applications. Power Systems Plus supplies Hotstart engine block heaters for sale across the USA, including pump-driven heaters, thermosiphon models, and OEM replacements for KIM Hotstart heaters. We regularly replace thermostats and elements to prolong the life of heater models like the CTM Series, CB/CL Series, and the HOTflow® CSM models. Select models are available in stock. Place your order online or message us for a shipping estimate. TPS Thermosiphon | CL Weathertight Series | CB Weathertight | CTM HOTflow® | CSM HOTflow®| EVRHEAT Series 20 | Vertical Mount Caterpillar Replacements | Hotstart® Catalog | Request Block Heater Service | Message us for Availability