Order Now, Pay Later with Affirm Logo Prequalify Now

  • Big Boss Cummins ISX15/X15 Compound Turbo Upgrade Kit by PDI
  • Turbo Upgrade Kit Installed in Engine Bay
  • Closeup of Turbo Installed in Engine Bay
  • Show Ready Chrome-Coated Kit
  • Closeup of Chrome-Coated Turbo Kit
  • Show Ready Chrome-Coated Kit Installed in Engine bay

Big Boss Cummins ISX15/X15 Compound Turbo Kit by PDI


Order Now, Pay Later with Affirm Logo Learn more
Calculated at Checkout
In Stock!
Calculated at Checkout
Frequently bought together:



Big Boss Cummins Compound Turbo Upgrade Kit

*This product is NOT legal in California. Raney's is not responsible for legal ramifications.

*Modification may be required for some trucks, please call with Year, Make, & Model to verify.

*Additional install kit required for X15 engines only.

*Looking for a show ready chrome-coated version? Give us a call!

  • Performance Diesel Compound Turbo Kit
  • Fits Cummins Engines (2010 - 2020) (550 - 700HP)
    • X15
    • ISX15
  • PDI's Design Increases Fuel Efficiency, Horsepower, & Torque
  • 1.45 A/R Ratio Keeps The Turbo In Its Efficiency Range
  • Allows More Airflow to Your Lower Intake and EGT
  • Improves Throttle Response and Exhaust Braking
  • Backed by a 1-Year Unlimited Mileage Warranty
  • Sold as a Kit
  • Made in America

PDI is the industry leader in adding power, torque and efficiency to your diesel engine. The complete Big Boss Compound Turbo Kit is everything you need to maximize your engine's full power potential while lowering exhaust and intake air temperatures. Available with coated finish to withstand higher temperature conditions. Maximize your airflow, increase your fuel economy and boost your engine's performance and power today.

Any mention of OEM names or OEM product ID numbers/descriptions/model numbers is intended for identification purposes only and does not indicate that it is an OEM part.

If you should need additional truck parts and accessories, please don't hesitate to call our toll-free number:

View AllClose

Warranty Information

1 Year Unlimited Mile Warranty
View AllClose


View AllClose

Questions & Answers

Live Chat