Allison On Highway AT Series

Catalyst Powertrain Provides Complete Services for Your Allison Bus "AT" Series Transmission

Catalyst Powertrain is an Allison Transmission authorized service center. We provide reman units, parts, repair, and maintenance for all Allison On Highway Transmissions.

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About the Allison AT Series

Tour Bus on the Highway

The Allison AT500 and AT1500P-series transmissions are fully automatic, with hydraulic controls and torque converter drive. All models have four forward speeds and one reverse, and are used primarily on-highway applications. Hydraulic shift controls provide automatic gear selection in each drive range and, for the AT1500P-series models, automatic engagement of the lockup clutch. The AT series transmissions can be installed behind engines with SAE#2 or SAE#3 bell housing, with shift calibrations available from 2200RPM to 4000RPM.

Allison 1000 Series Transmission

Features of the Allison AT Series Transmission

  • Fully automatic up to 4 forward speeds
  • Lockup available in the AT 1542/1545 Series

  • Power takeoff drive provision

  • Neutral start and reverse signal provision

  • Parking brake option

  • Multiple Torque Converter ratios

AT Series Transmission Applications

  • Emergency Vehicle
  • Pickup and Delivery truck

  • Airport Shuttle

  • Street Sweeper

  • Flat Bed Truck

  • Tanker Utility

  • Truck Stepvan

  • Motor Home

  • School Bus

  • Other Applications

For more information regarding your Allison Bus AT Series transmission, please contact us today!

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