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2017-2023 6.6L L5P / L5D Duramax 64/67 650-750WHP Drop-In Turbo

Every TNT turbo is designed, machined, assembled, and balanced in Canada.
$3,799.00
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650-750WHP with supporting mods!

The Black Sheep Industries 64/67 Drop-In Turbo for the 2017-2023 6.6L L5P and L5D Duramax platform is engineered for truck owners who want improved towing performance, lower EGTs, stronger airflow, and excellent street drivability without sacrificing fast spool-up characteristics.

Designed as a direct drop-in replacement for the factory turbocharger, this 64/67 turbo is an ideal choice for daily driven trucks, tow rigs, street performance builds, and customers looking for a more efficient turbocharger setup while retaining factory-style fitment.

If you are comparing L5P turbo options, visit our L5P / L5D Duramax Turbocharger Collection or compare this turbo against the 67/67 L5P Duramax Drop-In Turbo .

Why Choose the 64/67 L5P Duramax Turbo?

The 64/67 configuration is built for balance. It provides improved airflow over the factory turbocharger while maintaining the quick response and drivability that L5P owners expect from a street-friendly VGT setup.

  • 64mm compressor wheel
  • 67mm turbine wheel
  • Direct drop-in fitment
  • Improved airflow efficiency
  • Lower exhaust gas temperatures under load
  • Excellent towing performance
  • Fast spool-up characteristics
  • Strong daily driving manners
  • Supports additional fueling and custom tuning
  • Great option for tow rigs and street-driven trucks

64/67 vs Factory L5P Turbo

Feature Factory L5P Turbo BSI 64/67 Drop-In Turbo
Airflow Capability Factory-Level Improved
Towing Performance Good Excellent
EGT Control Can Become Limited Under Heavy Load Improved Under Load
Spool-Up Excellent Excellent
Performance Potential Limited Moderate to High
Best Use Stock Trucks Tuned Trucks, Tow Rigs, Street Builds

64/67 vs 67/67 L5P Duramax Turbo

Feature 64/67 Drop-In Turbo 67/67 Drop-In Turbo
Spool-Up Excellent Very Good
Towing Performance Excellent Very Good
Low-End Response Excellent Very Good
Top-End Airflow Very Good Excellent
Horsepower Potential Moderate to High High
Best Application Daily Driving and Towing Street Performance and Higher Horsepower Builds

Best Applications

  • Daily driven L5P Duramax trucks
  • Heavy towing applications
  • RV and trailer towing
  • Street performance builds
  • Mild to moderate tuning setups
  • Customers wanting lower EGTs without sacrificing spool-up

Recommended Supporting Modifications

For best results, this turbocharger should be paired with proper supporting modifications and professional tuning.

  • Custom tuning
  • Lift pump system
  • High-flow intake system
  • Intercooler pipe upgrades
  • Transmission tuning
  • EGT monitoring
  • Free-flowing exhaust system where applicable

Helpful L5P Duramax Turbo Resources

Frequently Asked Questions

Is the 64/67 L5P turbo good for towing?

Yes. The 64/67 drop-in turbo is an excellent option for towing because it offers fast spool-up, improved airflow, and better EGT control under load.

Will this turbo lower EGTs on my L5P Duramax?

A properly matched upgraded turbocharger can help reduce exhaust gas temperatures by improving airflow efficiency and reducing restriction under heavy load.

Is the 64/67 better than the 67/67 for daily driving?

For many daily driven and towing-focused trucks, the 64/67 is the better choice because it prioritizes fast response and drivability. The 67/67 is better suited for customers chasing more top-end airflow and horsepower capability.

Does this turbo require tuning?

Custom tuning is strongly recommended to maximize performance, drivability, boost control, and long-term reliability.

Is this a direct drop-in turbo?

Yes. This turbocharger is designed as a direct drop-in upgrade for compatible 2017-2023 6.6L L5P and L5D Duramax applications.