
- Direct-Fit Replacement: Ensures straightforward installation without the need for modifications.
- Quicker Turbo Response: Allows your turbocharger to spool up faster, improving throttle response and overall performance.
- Reduces Back-Pressure: By optimizing exhaust flow, these up-pipes decrease back pressure, leading to better engine breathing.
- Includes Gaskets For Installation: Provides all necessary gaskets for a hassle-free installation process.
- Free-Flowing Inner Liner Bellows: Designed to maximize exhaust flow and minimize turbulence.
- Lower Exhaust Gas Temperatures: Effectively reduces EGTs, contributing to improved engine longevity and performance.
- 50 State Legal (CARB E.O. D-701-20): Compliant with emissions standards in all 50 states.
- Stainless Steel Construction: Made from durable 11-gauge .120-inch wall, 2-inch OD 304 stainless steel for long-lasting performance.

The PPE 116120405 Replacement High Flow Up-Pipes are specifically designed to enhance the performance of your 2004.5-2005 GM 6.6L Duramax LLY. These up-pipes offer a significant upgrade over stock components, leading to noticeable improvements in engine efficiency and power.
Direct-Fit Replacement: Ensures straightforward installation without the need for modifications.
Quicker Turbo Response: Allows your turbocharger to spool up faster, improving throttle response and overall performance.
Reduces Back-Pressure: By optimizing exhaust flow, these up-pipes decrease back pressure, leading to better engine breathing.
Includes Gaskets For Installation: Provides all necessary gaskets for a hassle-free installation process.
Free-Flowing Inner Liner Bellows: Designed to maximize exhaust flow and minimize turbulence.
Lower Exhaust Gas Temperatures: Effectively reduces EGTs, contributing to improved engine longevity and performance.
50 State Legal (CARB E.O. D-701-20): Compliant with emissions standards in all 50 states.
Stainless Steel Construction: Made from durable 11-gauge .120-inch wall, 2-inch OD 304 stainless steel for long-lasting performance.
B[...]
- Direct-Fit Replacement: Ensures straightforward installation without the need for modifications.
- Quicker Turbo Response: Allows your turbocharger to spool up faster, improving throttle response and overall performance.
- Reduces Back-Pressure: By optimizing exhaust flow, these up-pipes decrease back pressure, leading to better engine breathing.
- Includes Gaskets For Installation: Provides all necessary gaskets for a hassle-free installation process.
- Free-Flowing Inner Liner Bellows: Designed to maximize exhaust flow and minimize turbulence.
- Lower Exhaust Gas Temperatures: Effectively reduces EGTs, contributing to improved engine longevity and performance.
- 50 State Legal (CARB E.O. D-701-20): Compliant with emissions standards in all 50 states.
- Stainless Steel Construction: Made from durable 11-gauge .120-inch wall, 2-inch OD 304 stainless steel for long-lasting performance.