Mastering Cummins Automatic Transmissions: A727, 47RH, 47RE, 48RE, 68RFE, Aisin & Allison Kits

Cummins owners know that pairing a reliable transmission with their diesel engine is crucial for ultimate performance and longevity. At CPP Diesel, we specialize in high-performance automatic transmissions built for durability, power, and smooth operation. Whether you’re running a 24-valve, 12-valve, or 6.7L Cummins, we’ve got you covered.

Popular Automatic Transmissions We Carry

A727 Transmission

The A727 is legendary for its toughness and adaptability. Perfect for Dodge Ram 1st–3rd generation trucks, this transmission handles heavy towing and off-road performance with ease. Check out our A727 transmission page for options and upgrades.

47RH & 47RE

Renowned for their reliability in late 90s Dodge Ram Cummins trucks, the 47RH and 47RE are versatile automatic transmissions that handle heavy-duty towing and extreme use. We offer rebuilt and performance-ready options to ensure your transmission lasts longer and performs better.

48RE

The 48RE is a common choice for 2003–2007 Dodge Ram 5.9L Cummins owners. Known for smooth shifting and high torque handling, CPP Diesel offers upgraded components and rebuild kits to maximize performance and prevent early failures. Learn more on our 48RE transmission page.

68RFE

For 2007.5–2018 Dodge Ram 6.7L Cummins, the 68RFE is the modern standard. At CPP Diesel, we provide performance upgrades, rebuild kits, and HD parts to ensure your transmission handles extra horsepower, towing, and heavy-duty applications. Explore our 68RFE options here.

Aisin Transmissions

The Aisin series, including 5- and 6-speed automatics in Dodge and other heavy-duty applications, offers incredible reliability and shift quality. CPP Diesel carries Aisin transmissions and rebuild kits to optimize your truck’s performance and lifespan. Find out more on our Aisin transmissions page.

Allison Transmission Kits

For the ultimate in commercial-grade automatic transmission performance, our Allison transmission kits provide HD upgrades, rebuild components, and preventative maintenance parts. These kits are engineered to handle extreme torque, towing, and long-haul reliability. Check our Allison kits page.

Why Choose CPP Diesel for Automatic Transmissions?

1. High-Performance Parts: From rebuild kits to upgraded components, we ensure your transmission exceeds factory durability.

2. Expert Knowledge: Our team specializes in Cummins engines and transmissions, giving you the right advice for your truck.

3. Complete Solutions: We provide full transmission replacements, rebuilds, and performance upgrades for all automatic transmissions we sell.

FAQ – Cummins Automatic Transmissions

Q: How do I know if I need a rebuild kit?
A: If your transmission is slipping, hesitating, or has rough shifts, a rebuild kit from CPP Diesel can restore smooth operation and extend service life.

Q: Can these transmissions handle upgraded engines?
A: Yes. With the proper performance kits and upgrades, our transmissions handle increased horsepower and torque safely.

Q: Are Allison kits compatible with Cummins engines?
A: Absolutely. Allison kits are designed for heavy-duty trucks and integrate seamlessly with Cummins engines for towing, hauling, and extreme performance.

Q: Do you offer installation support?
A: We provide guidance and instructions for all our automatic transmissions and rebuild kits. Our team can help you select the right parts for your application.

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