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Thumbnail Filmstrip of 2011-2015 6.6L LML Duramax 3 Inch Armor Lite Downpipe MBRP GM8427 Images
Unleash Performance in Your LML Duramax with the MBRP 3" Turbo Down Pipe
Maximize the potential of your 2011-2015 GM 6.6L LML Duramax by eliminating the restrictive factory down pipe with the MBRP 3" Turbo Down Pipe (Manufacturer Part # GM8427). This critical performance component is engineered to deliver a significant upgrade where it matters most: right off the turbocharger. By improving exhaust gas flow by 20% over stock, the MBRP down pipe allows your turbo to spool faster and more efficiently. This reduction in restriction translates directly into quantifiable power gains, delivering up to +21 horsepower and +24 lb/ft of torque, along with sharper throttle response and a richer, more aggressive diesel sound. Furthermore, this component is designed for greater heat retention, helping to keep heat energy in the exhaust stream where it belongs, while ensuring it will not affect emissions systems (the DPF system or the UREA injection system).
- Application: Specifically designed for the 2011-2015 GM 6.6L LML Duramax.
- Flow Improvement: Provides 20% greater exhaust flow compared to the restrictive stock down pipe.
- Power Gains: Delivers measurable performance increases of up to +21 HP and +24 lb/ft of torque.
- Acoustics: Enhances your vehicle with a richer diesel sound.
- Thermal Efficiency: Engineered for greater heat retention within the exhaust stream.
- Emissions Compliant: Designed to not affect the factory DPF system or the UREA injection system.
Before purchasing, please note a specific 2015 Duramax LML Import Note: this MBRP down pipe will only fit SOME 2015 Duramax trucks. It is crucial to verify that the turbo direct pipe in your specific 2015 model DOES NOT have a 3-bolt flange connecting to the catalytic converter. By ensuring proper fitment, you can successfully install this high-quality component and immediately benefit from the increased power, improved efficiency, and enhanced engine acoustics that the MBRP 3" Turbo Down Pipe provides
Unleash Performance in Your LML Duramax with the MBRP 3" Turbo Down Pipe
Maximize the potential of your 2011-2015 GM 6.6L LML Duramax by eliminating the restrictive factory down pipe with the MBRP 3" Turbo Down Pipe (Manufacturer Part # GM8427). This critical performance component is engineered to deliver a significant upgrade where it matters most: right off the turbocharger. By improving exhaust gas flow by 20% over stock, the MBRP down pipe allows your turbo to spool faster and more efficiently. This reduction in restriction translates directly into quantifiable power gains, delivering up to +21 horsepower and +24 lb/ft of torque, along with sharper throttle response and a richer, more aggressive diesel sound. Furthermore, this component is designed for greater heat retention, helping to keep heat energy in the exhaust stream where it belongs, while ensuring it will not affect emissions systems (the DPF system or the UREA injection system).
Application: Specifically designed for the 2011-2015 GM 6.6L LML Duramax.
Flow Improvement: Provides 20% greater exhaust flow compared to the restrictive stock down pipe.
Power Gains: Delivers measurable performanc[...]
Unleash Performance in Your LML Duramax with the MBRP 3" Turbo Down Pipe
Maximize the potential of your 2011-2015 GM 6.6L LML Duramax by eliminating the restrictive factory down pipe with the MBRP 3" Turbo Down Pipe (Manufacturer Part # GM8427). This critical performance component is engineered to deliver a significant upgrade where it matters most: right off the turbocharger. By improving exhaust gas flow by 20% over stock, the MBRP down pipe allows your turbo to spool faster and more efficiently. This reduction in restriction translates directly into quantifiable power gains, delivering up to +21 horsepower and +24 lb/ft of torque, along with sharper throttle response and a richer, more aggressive diesel sound. Furthermore, this component is designed for greater heat retention, helping to keep heat energy in the exhaust stream where it belongs, while ensuring it will not affect emissions systems (the DPF system or the UREA injection system).
- Application: Specifically designed for the 2011-2015 GM 6.6L LML Duramax.
- Flow Improvement: Provides 20% greater exhaust flow compared to the restrictive stock down pipe.
- Power Gains: Delivers measurable performance increases of up to +21 HP and +24 lb/ft of torque.
- Acoustics: Enhances your vehicle with a richer diesel sound.
- Thermal Efficiency: Engineered for greater heat retention within the exhaust stream.
- Emissions Compliant: Designed to not affect the factory DPF system or the UREA injection system.
Before purchasing, please note a specific 2015 Duramax LML Import Note: this MBRP down pipe will only fit SOME 2015 Duramax trucks. It is crucial to verify that the turbo direct pipe in your specific 2015 model DOES NOT have a 3-bolt flange connecting to the catalytic converter. By ensuring proper fitment, you can successfully install this high-quality component and immediately benefit from the increased power, improved efficiency, and enhanced engine acoustics that the MBRP 3" Turbo Down Pipe provides
Q
Chad Crowell • 06/14/2026, 10:39:08 PM
Do you guys have this lml down pipe in stock I can pick it up I need it Tuesday if possible
A
06/15/2026, 1:25:04 PM
In stock for pickup.
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