
Two Modulator retrofit packages are available: The package for specific Cummins engine applications contains the Modulator RCV250 Fan Drive assembly, the retrofit installation kit with Horton’s Di controller and the WindMaster HS11 Fan; while retrofit packages for applications that do not require the controller use the vehicle’s ECM to control the Modulator.
Horton, www.hortonww.com/modulator






















![Reintroducing The Mack Anthem Rebuilt For Regional Haul[79]](https://img.ccjdigital.com/mindful/rr/workspaces/default/uploads/2026/07/reintroducing-the-mack-anthem-rebuilt-for-regional-haul79.FdrR1gEDrK.jpg?auto=format%2Ccompress&fit=crop&h=167&q=70&w=250)