The Allison HT740 Transmission is a durable and reliable fully automatic transmission designed for medium-duty trucks and vocational applications. Known for its smooth shifting and robust performance, the HT740 is engineered to handle a wide range of commercial applications such as delivery trucks, utility vehicles, and vocational fleets. This transmission provides exceptional torque capacity and is built to endure challenging driving conditions, offering a balance of power, efficiency, and ease of maintenance.

With an advanced design, the HT740 Transmission ensures smooth operation, reduced downtime, and improved fuel efficiency, making it a popular choice for those who require both heavy-duty performance and low operational costs. Whether for on-highway or off-road conditions, the HT740 delivers consistent power and reliability.

Key Features:
  • Smooth Shifting: The 4-speed automatic transmission delivers smooth and efficient shifts, enhancing the overall driving experience and improving vehicle control in various load conditions.
  • Fuel Efficiency: The HT740 features a lock-up torque converter that helps improve fuel efficiency by reducing energy loss, making it a cost-effective solution for fleets.
  • Durability and Reliability: Built to withstand heavy-duty applications, the HT740 provides long-lasting reliability and reduces downtime, even in demanding environments.
  • Torque Capacity: With a torque rating of up to 600 lb-ft, the HT740 is designed to handle heavy payloads, ensuring powerful performance for medium-duty trucks.
  • Low Maintenance: The HT740’s robust design requires minimal maintenance, reducing operating costs and extending the life of the transmission.
  • Versatile Applications: Whether used in local deliveries or utility work, the HT740 is built for a wide range of commercial and vocational truck applications, providing consistent performance in diverse settings.
Additional Resources:
Technical Specifications:
  • Transmission Type: 4-speed automatic
  • Torque Converter: Lock-up type for increased fuel efficiency and improved performance
  • Input Shaft Torque Rating: 600 lb-ft (813 Nm)
  • Maximum Input Speed: 2400 RPM
  • Output Shaft Torque Rating: 600 lb-ft (813 Nm)
  • Gear Ratios:
    • 1st Gear: 3.79
    • 2nd Gear: 2.18
    • 3rd Gear: 1.41
    • 4th Gear: 1.00
  • Weight: Approx. 850 lbs (385 kg)
  • Cooling System: Water-cooled with integrated transmission cooler
  • Applications: Medium-duty trucks, delivery vehicles, utility vehicles, service trucks, and vocational fleets

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We are an Allison Transmission(R) Authorized Dealer. We have Allison factory trained and certified technicians, and an Allison certified customer support staff which is experienced and knowledgeable. All 1K through 4K transmissions are fully remanufactured with 100% genuine Allison components. All 1K and 2K torque converters are replaced with NEW genuine. All valve bodies are fully remanufactured and tested on our state of the art valve body test stand. All friction plates, solenoids, sensors and bearings are automically replaced. All transmissions are fully tested on our dynamometer upon completion. AT, HT, and MT Legacy series transmissions are also available. Hundreds of remanfuctured transmissions in stock and ready for immediate exchange which comes with a 3 year parts and labor warranty.

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