ALLISON MT643
The Allison MT643 Transmission is a highly reliable and durable automatic transmission designed for medium-duty commercial vehicles. Known for its exceptional performance and versatility, the MT643 is perfect for a wide variety of applications, including delivery trucks, vocational fleets, and buses. Offering smooth shifting, robust power handling, and long-lasting durability, this transmission ensures optimal vehicle performance in both urban and highway environments.
The MT643 is engineered to meet the needs of operators who require reliable power delivery, exceptional ease of operation, and minimal downtime. With its proven technology and simple design, it ensures both efficiency and ease of maintenance, making it a top choice for medium-duty vehicle fleets.
Key Features:
- 4-Speed Automatic Shifting: The MT643 features 4-speed automatic shifting, ensuring smooth transitions between gears and improved vehicle performance, especially in urban or stop-and-go driving conditions.
- Lock-Up Torque Converter: The torque converter with lock-up functionality helps improve fuel efficiency by reducing slippage, optimizing engine power, and reducing overall fuel consumption.
- Compact and Efficient Design: Engineered for medium-duty vehicles, the MT643 offers compactness and durability, making it an excellent choice for a wide range of commercial applications, from delivery to vocational uses.
- Heavy-Duty Performance: With a torque rating of 400 lb-ft, the MT643 can handle demanding operational environments, ensuring reliable performance and long service life.
- Durable and Low Maintenance: Known for its robust design, the MT643 reduces the frequency of maintenance and increases vehicle uptime, helping businesses maximize operational efficiency.
- Versatile Application Range: Ideal for medium-duty trucks and buses, the MT643 is versatile, making it suitable for a wide range of commercial applications, including deliveries and vocational fleets.
Additional Resources:
Technical Specifications:
- Transmission Type: 4-speed automatic
- Torque Converter: Lock-up type for improved fuel efficiency and performance
- Input Shaft Torque Rating: 400 lb-ft (542 Nm)
- Maximum Input Speed: 2,200 RPM
- Output Shaft Torque Rating: 400 lb-ft (542 Nm)
- Gear Ratios:
- 1st Gear: 3.51
- 2nd Gear: 2.01
- 3rd Gear: 1.43
- 4th Gear: 1.00
- Weight: Approx. 470 lbs (213 kg)
- Cooling System: Integrated transmission cooler with water-cooled cooling system
- Applications: Medium-duty trucks, delivery vehicles, vocational fleets, buses, and other commercial applications
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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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