REVMAX 478-500 BILLET INPUT SHAFT – 47RH / 47RE / 48RE – 1994–2007 DODGE RAM 5.9L CUMMINS

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When power levels climb, the factory input shaft becomes a known weak point. The REVMAX 478-500 Billet Input Shaft is engineered for high-horsepower 47RH, 47RE, and 48RE transmissions behind the legendary 5.9L Cummins.

Precision-machined from high-strength billet material, this shaft is designed to significantly increase torque capacity and durability compared to the OEM input shaft — making it a critical upgrade for towing, competition, and performance street builds.

Why Upgrade to a Billet Input Shaft?

• Handles substantially higher torque loads vs. stock
• Reduces risk of input shaft twisting or failure
• Ideal for tuned, injected, or turbo-upgraded Cummins builds
• Essential foundation for performance 47RH / 47RE / 48RE builds

Fitment:

• 1994–1995 Dodge Ram 5.9L Cummins – 47RH
• 1996–2002 Dodge Ram 5.9L Cummins – 47RE
• 2003–2007 Dodge Ram 5.9L Cummins – 48RE

Whether you’re building a heavy-duty tow rig or a high-horsepower street truck, upgrading the input shaft is one of the smartest internal transmission investments you can make.

FAQ

Yes. Once torque levels increase significantly beyond stock, the factory shaft becomes a failure point. A billet shaft is strongly recommended for performance builds.

This shaft is designed for applicable 47RH, 47RE, and 48RE units regardless of drivetrain configuration, but always confirm transmission specifications before ordering.

Installation requires full transmission disassembly. Professional installation or advanced transmission rebuilding experience is recommended.

Yes. This billet shaft is commonly paired with upgraded multi-disc torque converters in high-performance Cummins builds.