Bully Dog 2008-11 Cummins ISX Turbo + Actuator OEM: 3774613 PART NUMBER: 56154

Experience unparalleled performance with Bully Dog Big Rig turbos, engineered to elevate your heavy-duty truck’s capabilities. These all-new, pre-calibrated turbos are designed as direct bolt-on OEM replacements, ensuring a hassle-free installation process. Featuring a precision-crafted billet compressor wheel, these turbos deliver quicker spool-up and reduced lag compared to stock units, resulting in improved responsiveness and efficiency. You’ll notice a significant boost in horsepower and fuel economy, making your rig more powerful and cost-effective on long hauls. Each turbo comes complete with an actuator and requires no core charge, simplifying the upgrade process. With Bully Dog Big Rig turbos, you’re investing in a road-ready solution that combines cutting-edge technology with reliable performance, designed to keep your truck running at its peak.

The Bully Dog 56154 is a Stage 1 performance VGT (Variable Geometry Turbo) specifically designed for the Cummins ISX engine platform. It is a direct bolt-on OEM replacement that includes a pre-calibrated electronic actuator.

Vehicle Compatibility & Fitment

This part is specifically built for the following applications:

• Engine: Cummins ISX CM871

   

• Model Years: 2008–2011 (often marketed for late 2007 through 2010 models)

   

• Power Range: Supports trucks making between 400 and 650 horsepower.

   

• Application: Class 8 Heavy Duty Trucks (Semi-trucks), RVs, and diesel-powered farm equipment.

Key Features

• Billet Compressor Wheel: Lighter and stronger than stock, providing quicker spool-up and reduced turbo lag.

   

• Pre-Calibrated Actuator: Includes a new electronic actuator that is "Bolt & Go," meaning no manual calibration is required after installation.

   

• Improved Cooling: Features an upgraded Cobalt VGT cage and ring to handle higher temperatures and reduce EGTs (Exhaust Gas Temperatures).

   

• No Core Charge: Unlike many OEM replacements, this is an all-new unit, so you do not need to send back your old turbo.