Exergy E12 10707 12mm Stroker CP3 Conversion Kit for 2017+ L5P Duramax

The Exergy E12 10707 is a 12mm Stroker CP3 Conversion Kit engineered specifically for the 2017+ GM Duramax L5P diesel platform. This kit replaces the factory high-pressure fuel pump with a proven CP3-based system, delivering significantly increased fuel volume to support aggressive power builds while maintaining excellent long-term reliability.

At the heart of this kit is an Exergy-built 12mm stroker CP3 pump, based on the robust LBZ platform and equipped with an LBZ fuel pressure regulator for maximum pump output. The stroker design increases the pump's displacement per stroke, enabling it to supply the high fuel volumes demanded by heavily modified engines — making it an ideal solution for builds targeting serious rear-wheel horsepower.

Key Features:

• 12mm stroker CP3 pump based on the proven LBZ platform
• LBZ fuel pressure regulator included for optimized pump performance
• Dramatically increased fuel delivery volume over the stock injection pump
• Designed specifically for the 2017+ Duramax L5P fuel system architecture
• Built for high-horsepower and competition-oriented diesel applications
• Engineered and assembled by Exergy Performance

Important Notes:

• Custom tuning is required with this conversion kit
• Supporting fuel system modifications are recommended for maximum performance
• Primary fuel supply requirement: 150 GPH at 8–10 PSI per pump for peak output
• Not CARB legal — not for sale or use in California

The Exergy E12 10707 12mm Stroker CP3 Conversion Kit is a purpose-built fuel system upgrade for the L5P Duramax owner serious about extracting maximum power from their diesel platform.