• Holset Turbocharger Upgrades

    The Holset Super 40 and Pro 52 turbochargers allow substantial increases in horsepower and torque on the Cummins powered Dodge Ram. Designed for the Dodge Ram Series 1988-2009, performance enthusiasts report increased throttle response, increased pulling power and an extra edge for off-highway performance.

    compressor map comparison super 40 holset upgrade

    compressor map comparison pro52 holset upgrade

    Holset Super 40 Turbos - Click Here For Application Notes

    What do you get with a Holset turbos Super 40 upgrade?

    • Higher Boost Capacity
    • Wider map width enhancement (MWE)
    • High Speed balanced rotor system
    • 130,000 rpm maximum rotor speed
    • Requires minimum engine modification

    Holset Pro 52 Turbos - Click Here For Application Notes

    What do you get with a Holset turbos Pro 52 upgrade?

    • Produces extreme horsepower
    • Requires serious engine modification
    • Designed ONLY for use off-highway
    • 112,000 rpm maximum rotor speed

    The performance options listed above are for off-road engines exempted by EPA (40 CFR 89.903) and require modification to the original equipment turbocharger. Making these modifications will void the original warranty.

    Cummins Turbo Technologies disclaims all warranties, express or implied and expressly disclaims the implied warranties of merchantability and fitness for a particular purpose. In addition, Cummins Turbo Technologies will not be responsible for any incidental or consequential damages.

    • holset super 40 turbocharger warning

      Upgrading Your Turbo

      Turbochargers can be hazardous when not used as specified by the manufacturer. To prevent damage and personal injury:

      1) Always use the turbocharger part number specified by the engine manufacturer. 2) Use only in applications approved by the engine manufacturer. 3) Do not touch before checking surface temperatures. 4) Do not work on a running turbocharger or engine. 5) Do not modify the turbocharger in any way. 6) Disassemble and re-assemble using the engine manufacturer's instructions. 7) Use only approved spare parts.