2017-2023 6.6L L5P / L5D Duramax 67/67 Drop-In Turbo

2017-2023 6.6L L5P / L5D Duramax 67/67 Drop-In Turbo The Black Sheep Industries 67/67 Drop-In Turbo for the 2017-2023 6.6L L5P and L5D Duramax platform is engineered for customers seeking increased airflow, higher horsepower capability, improved towing performance, and strong street drivability while retaining factory-style fitment. Designed as a direct drop-in replacement for the factory turbocharger, the 67/67 offers a significant improvement in airflow efficiency over stock. This turbocharger is an excellent choice for tuned trucks, aggressive street builds, performance towing applications, and customers planning additional fueling upgrades. If you are comparing L5P turbo options, visit our L5P / L5D Duramax Turbocharger Collection or compare this turbo against the 64/67 L5P Duramax Drop-In Turbo . Why Choose the 67/67 L5P Duramax Turbo? The 67/67 configuration is built for customers who want more top-end airflow and higher horsepower potential while maintaining strong drivability. It is a great option for L5P Duramax owners who have outgrown the factory turbocharger and want a more capable drop-in upgrade without converting to a fixed geometry setup. 67mm compressor wheel 67mm turbine wheel Direct drop-in fitment Improved airflow efficiency Higher horsepower capability Strong street performance Improved towing performance Excellent top-end airflow Supports additional fueling and custom tuning Retains factory-style drivability 67/67 vs Factory L5P Turbo Feature Factory L5P Turbo BSI 67/67 Drop-In Turbo Airflow Capability Factory-Level Significantly Improved Towing Performance Good Very Good Top-End Power Limited Excellent Spool-Up Excellent Very Good Performance Potential Limited High Best Use Stock Trucks Tuned Trucks, Street Builds, Performance Towing 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 Tuned L5P Duramax trucks Aggressive street performance builds Performance towing applications Higher horsepower diesel builds Trucks with supporting fueling upgrades Customers wanting more top-end airflow 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 Best L5P Duramax Turbo Upgrades for Towing 67/67 vs 64/67 L5P Duramax Turbo How to Lower EGTs on an L5P Duramax Frequently Asked Questions Is the 67/67 L5P turbo good for towing? Yes. The 67/67 drop-in turbo can tow very well, especially for customers who want increased airflow and stronger top-end performance while still retaining street-friendly drivability. 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 load. Is the 67/67 better than the 64/67 for horsepower? Yes. The 67/67 generally offers more top-end airflow and higher horsepower capability than the 64/67, making it a better fit for more aggressive street builds and higher horsepower applications. 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.