48RE Transmission – Dodge Ram 2003–2007

The 48RE automatic transmission was used in Dodge Ram trucks from 2003–2007. Paired with the 5.9L Cummins engine, it’s a strong performer, but serious towing and heavy-duty applications benefit from upgrading to an Allison transmission conversion kit.

Features of the 48RE Transmission

• Automatic 4-speed electronically controlled transmission
• Compatible with 5.9L Cummins engines (2003–2007)
• Durable stock design for moderate towing
• Upgradeable to Allison for extreme towing and heavy loads

Frequently Asked Questions

Which Dodge Ram years used the 48RE?

2003–2007 with 5.9L Cummins engines.

Can the 48RE handle heavy towing?

Stock 48RE handles moderate loads. For extreme towing, an Allison conversion is recommended.

Is there an Allison upgrade for 48RE trucks?

Yes, CPP Diesel offers Cummins-to-Allison kits compatible with Dodge Ram trucks originally equipped with 48RE. Learn more.

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