How does the BigHead Actuator improve mid-range torque?

The BigHead Actuator has a larger diaphragm and stronger spring than the stock unit. This keeps the wastegate valve closed longer, allowing boost pressure to build more effectively in the mid-range RPMs, which translates to better pulling power.

Will this actuator work with my 2004.5 Dodge Ram 5.9L Cummins?

No, this BigHead Wastegate Actuator Kit is specifically designed for the 2003-2004 Dodge 5.9L Cummins engines with the 235-305hp rating. It will not fit the 2004.5 and later 325hp or 600hp engines.

Does this kit come with everything needed for installation?

The Banks Power BigHead Wastegate Actuator Kit includes the actuator itself. Installation typically involves unbolting the stock actuator and bolting this one in its place, but refer to the manufacturer's instructions for specific details.

Banks Power 03-04 Dodge 5.9L 235-305Hp Big Head Actuator Kit

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Banks Power

Banks Power 03-04 Dodge 5.9L 235-305Hp Big Head Actuator Kit

Name: Banks Power 03-04 Dodge 5.9L 235-305Hp Big Head Actuator Kit
Brand: Banks Power
Price: 228.00 USD
Availability: InStock

$228.00

Banks Power 03-04 Dodge 5.9L 235-305Hp Big Head Actuator Kit. This BigHead Actuator holds boost longer for quicker acceleration and more mid-range pulling power.

Key Features

Direct fit — verified for 2003-2004 Dodge Ram 2500/3500 5.9L 235-305hp
Quick, controlled boost — holds the wastegate closed longer for faster boost buildup
More mid-range pulling power — maintains boost for better torque when you need it
Doubles stock diaphragm area and spring pressure — for more consistent boost control

⚠️ CA WARNING: This product can expose you to chemicals known to the State of California to cause cancer and/or birth defects or other reproductive harm. Learn more

Fits these vehicles

Dodge Ram 2500 2003-2004
Dodge Ram 3500 2003-2004

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Product Details

Already running a modified turbo setup? This is the next piece. The Banks Power BigHead Wastegate Actuator Kit (part number 24331) is built to address a common issue in the 2003-2004 Dodge Ram 5.9L Cummins with the 235-305hp engine. Stock actuators can let the wastegate open too early under high boost, which limits mid-range torque. This kit replaces the stock unit with one that has twice the diaphragm area and spring pressure.

By keeping the wastegate valve seated longer, the BigHead actuator helps achieve higher peak boost sooner. Once peak boost is reached, it precisely controls the opening of the wastegate. This results in crisper acceleration and more pulling power in the mid-range, especially when you're towing or hauling.