Modulator Variable Speed Retrofit Packages

Modulator Fully Variable Retrofit Packages replace on/off fan drives for many heavy-duty line-haul and severe-duty vocational trucks where pneumatically actuated fan clutches over-cycle or do not provide optimum performance.

  • Offer faster cab warm-up, more efficient air conditioning and quieter operation for improved operator comfort
  • Maximize engine power to the vehicle drive wheels and improve fuel savings in most applications
  • Modulator RCV250 fan drive directly controlled and managed by the engine's electronic control module (ECM) in many applications
  • Package for specific Cummins engine applications contains the fan drive, mounting bracket and pulley, Di Controller, wiring harness and step-by-step installation manual and WindMaster HS11 fan

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