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Thompson Diesel Inc

Holset Turbochargers.

Holset turbochargers for Cummins engines.


With locations in Oklahoma City and Tulsa, Thompson Diesel is a proud distributor of Holset Turbochargers and Turbocharger Components. For information on pricing and avalability, please fill out the Contact Us form located on this page and we will get back to you shortly. Also, feel free to call us 1-888-824-5517. 

Today's top diesels work at the molecular level to atomize fuel with finely tuned air and fuel pressure, maximizing fuel efficiency, while its component parts are performance matched to control emissions. That is why using the correct replacement part is more important today ever.

Genuine Benefits

  • Reduced downtime
  • Optimized fuel efficiency
  • Delivered factory level performance
  • Optimized factory level efficiency
  • Demonstrated durability
  • 12 month Cummins factory warranty


Performance 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 1988-2006, performance enthusiasts report increased throttle response, increased pulling power and an extra edge for off-highway performance.

Holset turbochargers are factory-equipped for the Cummins-powered Dodge Ram and are engineered, designed and tested specifically to optimize performance by the people who know your Cummins engine the best.

Holset Super 40

  • Higher boost capacity
  • Wider map width enhancement (MWE)
  • High speed balanced rotor system
  • 130,000 rpm maximum rotor speed
  • Requires minimum engine modifications

Holset Pro 52

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


Holset turbochargers are made to meet the highly specific standards--not to simply fulfill the power owners' demands, but to also keep Cummins engines performing at top efficiency year after year. With correct parts and regular maintenance, Dodge Ram drivers can depend on the performance and efficiency their vehicles were designed to deliver over the long haul.


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