
- Quality Tested: Each harness undergoes rigorous testing to guarantee its durability and performance under the demanding conditions of your engine bay. You can trust that this product meets the highest standards of reliability.
- OE-Style Connectors: Featuring connectors identical to those used by the original equipment manufacturer, installation is a breeze. This ensures a perfect fit and a secure connection, eliminating the risk of loose or faulty wiring.
- Direct-Fit Installation: Designed specifically for your 2011-2016 GM 6.6L Duramax LML, this harness offers a hassle-free, direct-fit installation. No modifications or complex wiring are needed, saving you time and effort.

Unleash the full potential of your 2011-2016 GM 6.6L Duramax LML with the Fleece FPE-HAR-CP3-EXT CP3 Fuel Pressure Regulator Extension Harness. This isn't just an accessory; it's a crucial component designed to optimize your fuel system's performance and ensure the longevity of your engine. By providing a secure and reliable extension for your CP3 fuel pressure regulator, this harness helps maintain consistent fuel delivery, which is vital for efficient combustion and peak power output in your Duramax.
Quality Tested: Each harness undergoes rigorous testing to guarantee its durability and performance under the demanding conditions of your engine bay. You can trust that this product meets the highest standards of reliability.
OE-Style Connectors: Featuring connectors identical to those used by the original equipment manufacturer, installation is a breeze. This ensures a perfect fit and a secure connection, eliminating the risk of loose or faulty wiring.
Direct-Fit Installation: Designed specifically for your 2011-2016 GM 6.6L Duramax LML, this harness offers a hassle-free, direct-fit installation. No modifications or complex wiring are needed, saving you time and ef[...]
- Quality Tested: Each harness undergoes rigorous testing to guarantee its durability and performance under the demanding conditions of your engine bay. You can trust that this product meets the highest standards of reliability.
- OE-Style Connectors: Featuring connectors identical to those used by the original equipment manufacturer, installation is a breeze. This ensures a perfect fit and a secure connection, eliminating the risk of loose or faulty wiring.
- Direct-Fit Installation: Designed specifically for your 2011-2016 GM 6.6L Duramax LML, this harness offers a hassle-free, direct-fit installation. No modifications or complex wiring are needed, saving you time and effort.