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

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 Best L5P Duramax Turbo Upgrades for Towing 67/67 vs 64/67 L5P Duramax Turbo How to Lower EGTs on an L5P Duramax