The Modulator retrofit packages offer faster cab warm-up, more efficient air- conditioning and quieter operation for improved operator comfort.

Horton introduces the Modulator® Fully Variable Retrofit Packages, which deliver optimized engine cooling for any climate. Aftermarket Modulator 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.

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