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Peterbilt 389 Automatic Transmission For Sale

(2 reviews)
  • Type: Automatic Transmission (4-speed)
  • Maker: Honda
  • Torque Capacity: 150-170 lb-ft
  • Speeds: 4 forward gears
  • Condition: Used


99.5% Positive feedback
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Affordable Peterbilt 389 Automatic Transmission for Sale

Peterbilt 389 is a model that is one of the most successful ones in the sphere of heavy-duty trucks. Regarding the transmission, the Peterbilt 389 usually comes with manual and automatic transmission as a way of satisfying the drivers’ preferences as well as meeting the business requirements.

Depending on the Peterbilt 389 models, options can include automatic transmissions such as the Eaton UltraShift Plus or the Allison Transmission. These automatic transmission systems are designed to offer smooth and accurate gear shifting, simplicity, and efficiency and these features when offered in the vehicles are paramount especially when it comes to long distances and equally when the vehicle is in heavy usage.

Extensive Inventory of used Peterbilt 389 Trucks

Our collection features used Peterbilt 389 automatic transmission for sale from reputable dealers and private sellers in various states including Texas, California, Colorado, and Florida. If you’re looking for a reliable pre-owned truck transmission, our inventory caters to all preferences and budgets.

Why Choose Peterbilt 389 Automatic Transmission?

Opting for an automatic transmission enhances your driving experience by offering:

  • Efficiency: Automatic transmissions vary in selecting the gears of the car; at certain times they may be more economical than manual exploitation once they are fitting for the driving condition factor, load factor, and road surface factor.
  • Smooth Shifting: The other good thing about the current fully automatic transmission systems such as the Eaton UltraShift Plus and Allison transmission is that they can be programmed in such a way that they make very few shifts and very smooth rides which is a factor that is unique and rather advantageous, more so to the long-distance riders.
  • Ease of Operation: Automatic transmissions deserve because the action of changing gears is done by the car, not the driver and this is beneficial if the driver just wants a more comfortable drive or else if there is some task that the driver needs to do while driving.
  • Programmable Settings: Some of the automatic transmission systems will contain shift point programming of the transmission and the characteristics of the same transmission; hence it will be in a position to offer the drivers, as well as the managers of the fleet the option of the characteristic of the transmission that will suit the requirement of a given operation.
  • Durability: The commanding and moving power technologies of the modern world are applied in Peter built 389 automatic transmissions and as for the parts, what was said above still holds; they are built to last long, especially for long-term usage such as the hauling or if it often used all to make those trucks long-lasting.
  • Safety Features: Also, there is the hill start assist and electronics stability control under the feature of the automatic transmission; the control and level of self-assurance given to the driver are enhanced especially when driving in complicated terrains.
  • Integration with Technology: This advancement of today’s automatic transmissions can be in touch with Telematics and Fleet management to get the desired details about the health of the transmission, efficiency of the fuel, and behaviors of the drivers for better control of the fleet.

Peterbilt 389 Automatic Transmission Fits:


  1. Peterbilt 389
  2. Long-Haul Trucks
  3. Tanker Trucks
  4. Dump Trucks
  5. Utility and Service Trucks
  6. Specialty Trucks
  7. Fleet Vehicles


  1. Cummins ISX15
  2. PACCAR MX-13
  3. Cummins X15
  4. Caterpillar C15
  5. Detroit Diesel DD13
  6. Detroit Diesel DD15
  7. Cummins ISX12

Experience excellence on the road with the Peterbilt 389 automatic transmission. Designed for durability, comfort, and efficiency, our selection offers something for every driver. Browse our listings, customize your order, and drive away in a truck that defines the future of transportation.

Additional information

Gear Ratios

First Gear: 7.17 or 6.31
Second Gear: 4.89 to 5.04
Third Gear: 3.30 to 3.50
Fourth Gear: 2.10 to 2.50
Fifth Gear (Overdrive): 0.73 to 0.80

Torque Rating

1,250 lb-ft to 2,050 lb-ft

Overall Length

240 to 310 inches



Fluid Capacity

40-50 Quarts


2007 Peterbilt 389 Automatic Transmission

2 reviews for Peterbilt 389 Automatic Transmission For Sale

  1. Brian Anderson

    Peterbilt 389 Automatic Transmission purchased from Find Auto Parts online exceeded expectations. The transmission was exactly as described, and installation was straightforward. Great customer service and competitive pricing. Highly recommend!

  2. Ryan Williams

    Purchased a Peterbilt 389 Automatic Transmission from Find Auto Parts online. Transaction was seamless, and the transmission arrived promptly and well-packaged. Very pleased with the quality and service!

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Product Q&A

Availability of Peterbilt 389 Automatic Transmission for Sale?

Here at Find Auto Parts Online, you will find the best quality used Peterbilt 389 Automatic Transmission for Sale at the perfect price.

What is the price of Peterbilt 389 Automatic Transmission for sale?

Here at Find Auto Parts Online, you will find the best quality used Peterbilt 389 Automatic Transmission for Sale. Please call or Contact us here.

What type of automatic transmission does the Peterbilt 389 typically use?

The Peterbilt 389 often uses heavy-duty automatic transmissions such as the Allison 4000 series or Eaton Fuller automated transmissions, depending on the specific configuration and customer preference.

What are the maintenance intervals for the automatic transmission in the Peterbilt 389?

Maintenance intervals for the transmission generally involve regular fluid and filter changes. Specific intervals can vary, but typically transmission fluid should be changed every 50,000 to 100,000 miles, or as recommended by the manufacturer.

What is the towing capacity of a Peterbilt 389 equipped with an automatic transmission?

Towing capacity can vary depending on the specific configuration (engine, transmission, axle ratio, etc.) and the application. Generally, heavy-duty trucks like the Peterbilt 389 are capable of towing loads ranging from several tons to over 30 tons, depending on the setup.

Can the automatic transmission in the Peterbilt 389 be upgraded or modified for specific applications?

Yes, the transmission can often be upgraded or modified to meet specific performance requirements or preferences. This may include adjusting gear ratios, installing performance torque converters, or upgrading cooling systems for enhanced towing or heavy-duty applications.

What safety features are included in the automatic transmission of the Peterbilt 389?

Automatic transmissions in modern heavy-duty trucks like the Peterbilt 389 often include safety features such as electronic controls for smooth shifting, torque management systems to prevent overloading, and diagnostic capabilities to monitor transmission health.

How does the automatic transmission affect fuel efficiency in the Peterbilt 389?

The transmission plays a significant role in fuel efficiency by optimizing gear ratios and managing engine RPMs. Automatic transmissions in trucks like the Peterbilt 389 are designed to balance power delivery with fuel economy, especially during highway cruising and heavy-load conditions.
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