2020-2025 GM 2500/3500HD Truck 6.6L L8T Gen 6 3.0L Whipple Supercharger Kit

The Whipple WK-1225 Supercharger Kit is designed for 2020-2025 GM 2500HD and 3500HD truck applications equipped with the 6.6L L8T V8. Built around the Gen 6 3.0L Whipple twin-screw supercharger, this system delivers substantial horsepower and torque gains with the towing power, drivability, and durability expected from a premium Whipple package.

With power output of up to 685 horsepower and 695 lb-ft of torque under optimal conditions on 93-octane fuel, the WK-1225 transforms the L8T platform with instant boost, improved throttle response, and strong power throughout the RPM range. The Gen 6 3.0L front-feed design, oversized air-to-water intercooler, massive dual-pass heat exchanger, and high-flow water system work together to help maintain consistent air charge temperatures under load.

This system is designed for clean integration on compatible applications and includes the major components needed for installation along with calibration support. Additional system components include the high-flow intake manifold, billet idler plate, adjustable tensioner system, and high-capacity water system, making the WK-1225 a strong solution for towing, work use, and high-performance driving.

Key Features:

• Gen 6 3.0L Whipple twin-screw supercharger
• Fits 2020-2025 GM 2500HD and 3500HD truck applications with the 6.6L L8T V8
• Up to 685 HP and 695 lb-ft of torque*
• Supports Global A and Global B applications
• Oversized air-to-water intercooler
• Massive dual-pass heat exchanger and high-flow pump
• High-flow intake manifold included
• Billet idler plate and adjustable tensioner system
• Calibration support for compatible applications
• CARB EO D-231-135

PCM Requirements:

E93 PCM upgrade service is required for applicable model years. This is not included with the supercharger kit, only the calibration.

E93 Global A Service Tag: 12692986
E93 Global B Service Tag: 12731976

50-State Legal: CARB EO D-231-135

*Power figures shown are based on optimal conditions with 93-octane fuel. Results may vary depending on conditions, octane, and dyno type.