2025 Ram Transmission: Choosing Between Aisin, Allison, or ZF

Nick Bronco
6 min readJan 4, 2024

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Transmission Options and Performance

Ram is known for its powerful engines and heavy-duty trucks, and the 2025 2500 is no exception. One of the key decisions that buyers will need to make is which transmission to choose. Ram offers three transmission options for the 2025 Ram 2500: Aisin, Allison, and ZF.

There has been much speculation about what type of transmission the 2025 Ram will have, with many experts weighing in on the pros and cons of different options.

One of the main contenders for the 2025 Ram transmission is the Aisin transmission. This transmission has been used in previous Ram Heavy Duty models and is known for its reliability and durability. However, some experts believe that the Aisin transmission may not be the best choice for the 2025 Ram, as it may not be able to handle the increased power and torque of the new model.

Another option that has been discussed is the Allison transmission. This transmission is known for its strength and durability and is often used in heavy-duty trucks. However, some experts believe that the Allison transmission may not be the best choice for the 2025 Ram, as it may not be able to handle the increased weight and size of the new model.

Finally, the ZF transmission is also being considered for the 2025 Ram. This transmission is known for its smooth shifting and efficiency, and many experts believe that it would be a good fit for the new model.

Transmission Options and Performance

Ram is known for its powerful engines and heavy-duty trucks, and the 2025 Ram 2500 is no exception. One of the key decisions that buyers will need to make is which transmission to choose. Ram offers three transmission options for the 2025 Ram 2500: Aisin, Allison, and ZF.

Aisin Transmission Details

The Aisin transmission is a six-speed automatic transmission that is available with Ram’s 6.7L Cummins turbo-diesel engine. This engine produces up to 400 horsepower and 1,000 lb-ft of clean-diesel torque. With the Aisin transmission, the 2025 Ram 2500 can tow up to 31,000 pounds. The Aisin transmission is known for its reliability and smooth shifting, making it a popular choice among Ram buyers.

Allison Transmission Advantages

Allison is a well-respected name in the world of automatic transmissions, and the Allison transmission is available as an option for the 2025 Ram 2500. The Allison transmission is a ten-speed automatic transmission that is built by GM. The transmission is known for its durability and ability to handle heavy loads. While the Allison transmission is not currently available with the Ram 2500, it is a popular choice among buyers who need a heavy-duty truck for towing and hauling.

ZF Transmission Technology

The ZF transmission is an eight-speed automatic transmission that is available with the gasoline 6.4-liter HEMI V8 engine. The ZF transmission is also rumored to be an option for the diesel engine, although this is not yet confirmed. The ZF transmission is known for its advanced technology and smooth shifting. While the ZF transmission is not currently available with the Ram 2500, it is a popular choice among buyers who want a high-performance gearbox.

Overall, the transmission that buyers choose will depend on their specific needs and preferences. The Aisin transmission is a reliable and powerful option for those who need to tow heavy loads, while the Allison transmission is a durable and popular choice among buyers who need a heavy-duty truck for towing and hauling. The ZF transmission is a high-performance gearbox that is ideal for those who want advanced technology and smooth shifting.

Comparative Analysis and Market Insights

Efficiency and Mileage

The 2025 Ram 2500 transmission will be a key factor in determining the efficiency and mileage of the vehicle. The Aisin and Allison transmissions are known for their efficiency, but the ZF transmission is also expected to perform well.

The ZF 8-speed transmission is already being used with the gasoline 6.4-liter HEMI V8 engine in the Ram 2500, and there are rumors that the optional diesel engine will also get the same ZF gearbox. This is a less likely outcome, in our honest opinion, as the Cummins diesel engine is more complex than the gasoline engine and may require a more sophisticated transmission.

Durability and Reliability

Durability and reliability are crucial factors for any transmission. The Allison transmission is known for its durability and reliability, especially in commercial applications.

The Aisin transmission is also a good option, but it lacks the transmission tune that is available for the Allison transmission.

The ZF transmission is relatively new in the heavy-duty truck market, but it has a good reputation in the automotive industry. In terms of durability and reliability, the Allison transmission is the clear winner, but the Aisin and ZF transmissions are also good options.

Cost and Availability of Parts

The cost and availability of parts are important considerations when choosing a transmission. The Allison transmission is the most expensive option, but it is also the most widely available. The Aisin transmission is less expensive than the Allison transmission, but it may be harder to find replacement parts for it. The ZF transmission is a relatively new option, and it may be more expensive than the Aisin transmission, but it is expected to be more widely available than the Aisin transmission. In terms of cost and availability of parts, the Allison transmission is the most expensive but also the most widely available.

Environmental Regulations Compliance

Environmental regulations compliance is an important consideration for any engine and transmission combination. The 6.7-liter Cummins diesel engine that is used in the Ram 2500 is equipped with a diesel particulate filter (DPF), selective catalytic reduction (SCR), and exhaust gas recirculation (EGR) to comply with the EPA’s emissions regulations.

The Aisin and ZF transmissions are expected to be compatible with this engine and its emissions control systems.

The Allison transmission is also compatible with this engine, but it may require additional modifications to comply with emissions regulations.

In terms of environmental regulations compliance, all three transmission options are expected to be compatible with the 6.7-liter Cummins diesel engine and its emissions control systems.

Transmission Options and Performance

Ram is known for its powerful engines and heavy-duty trucks, and the 2025 2500 is no exception. One of the key decisions that buyers will need to make is which transmission to choose. Ram offers three transmission options for the 2025 Ram 2500: Aisin, Allison, and ZF.

There has been much speculation about what type of transmission the 2025 Ram will have, with many experts weighing in on the pros and cons of different options.

One of the main contenders for the 2025 Ram transmission is the Aisin transmission. This transmission has been used in previous Ram Heavy Duty models and is known for its reliability and durability. However, some experts believe that the Aisin transmission may not be the best choice for the 2025 Ram, as it may not be able to handle the increased power and torque of the new model.

Another option that has been discussed is the Allison transmission. This transmission is known for its strength and durability and is often used in heavy-duty trucks. However, some experts believe that the Allison transmission may not be the best choice for the 2025 Ram, as it may not be able to handle the increased weight and size of the new model.

Finally, the ZF transmission is also being considered for the 2025 Ram. This transmission is known for its smooth shifting and efficiency, and many experts believe that it would be a good fit for the new model.

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