MBRP 15.5-16 GM Duramax 6.6L 3-Inch Downpipe Kit for Silverado and Sierra 2500/3500 HD

Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California. Armor BLK Turbocharger Down Pipe; 3 in.; Black Coated; For Use w/3 Bolt Flange Style Connection; 4 in. Outlet Diameter Tip; Only Works With A 3 Bolt Flange Style Connection.

• Direct Replacement. 20% Increased Flow Over Stock. Richer Diesel Sound.
• 20 Percent Greater Flow Over Stock
• Will Not Affect Emissions
• Gains Of +21 Horsepower
• 24 lb./ft./ Torque Gain
• Greater Heat Retention
• Richer Diesel Sound

Upgrade your 2015 Chevrolet Silverado or GMC Sierra 2500/3500 HD with the MBRP part number GM8428 3-inch downpipe kit designed specifically for Duramax 6.6L engines. This direct replacement downpipe offers significant improvements over stock components, including a 20% increase in exhaust flow, which contributes to better engine performance and efficiency. Constructed with a durable black-coated finish, this downpipe effectively retains heat, promoting optimal exhaust scavenging and maximizing power gains. The kit is engineered for a seamless fit with a 3-bolt flange style connection, ensuring straightforward installation and compatibility with your vehicle's existing exhaust system. The enhanced airflow and increased heat retention translate into notable gains of approximately 21 horsepower and 24 lb-ft of torque, delivering a more aggressive diesel sound and improved overall performance. Please note that this product may not comply with emissions regulations in all jurisdictions, and removal of OEM catalytic converters could be illegal in some areas. Ensure the intended use aligns with local laws before installation. Crafted for durability and performance, this downpipe is ideal for truck enthusiasts seeking to optimize their vehicle's power output and sound profile while maintaining a robust and reliable exhaust system.

Features:

• Direct replacement for OEM downpipe, ensuring a perfect fit

• 20% increased exhaust flow over stock for improved performance

• Constructed with black-coated steel for heat retention and durability

• Compatible with 3-bolt flange style connection

• Gains of approximately 21 horsepower and 24 lb-ft torque

• Enhances diesel sound for a richer driving experience

• Designed for use with 2015 Chevrolet Silverado and GMC Sierra 2500/3500 HD Duramax engines

• Not for sale or use in California due to emissions laws

Fitment:
2015 Chevrolet Silverado 2500 HD High Country
2015 Chevrolet Silverado 2500 HD LT
2015 Chevrolet Silverado 2500 HD LTZ
2015 Chevrolet Silverado 2500 HD WT
2015 Chevrolet Silverado 3500 HD High Country
2015 Chevrolet Silverado 3500 HD LT
2015 Chevrolet Silverado 3500 HD LTZ
2015 Chevrolet Silverado 3500 HD WT
2015 GMC Sierra 2500 HD Base
2015 GMC Sierra 2500 HD Denali
2015 GMC Sierra 2500 HD SLE
2015 GMC Sierra 2500 HD SLT
2015 GMC Sierra 3500 HD Base
2015 GMC Sierra 3500 HD Denali
2015 GMC Sierra 3500 HD SLE
2015 GMC Sierra 3500 HD SLT
2016 Chevrolet Silverado 2500 HD High Country
2016 Chevrolet Silverado 2500 HD LT
2016 Chevrolet Silverado 2500 HD LTZ
2016 Chevrolet Silverado 2500 HD WT
2016 Chevrolet Silverado 3500 HD High Country
2016 Chevrolet Silverado 3500 HD LT
2016 Chevrolet Silverado 3500 HD LTZ
2016 Chevrolet Silverado 3500 HD WT
2016 GMC Sierra 2500 HD Base
2016 GMC Sierra 2500 HD Denali
2016 GMC Sierra 2500 HD SLE
2016 GMC Sierra 2500 HD SLT
2016 GMC Sierra 3500 HD Base
2016 GMC Sierra 3500 HD Denali
2016 GMC Sierra 3500 HD SLE
2016 GMC Sierra 3500 HD SLT
2017 Chevrolet Silverado 2500 HD High Country
2017 Chevrolet Silverado 2500 HD LT
2017 Chevrolet Silverado 2500 HD LTZ
2017 Chevrolet Silverado 2500 HD WT
2017 Chevrolet Silverado 3500 HD High Country
2017 Chevrolet Silverado 3500 HD LT
2017 Chevrolet Silverado 3500 HD LTZ
2017 Chevrolet Silverado 3500 HD WT
2017 GMC Sierra 2500 HD Base
2017 GMC Sierra 2500 HD Denali
2017 GMC Sierra 2500 HD SLE
2017 GMC Sierra 2500 HD SLT
2017 GMC Sierra 3500 HD Base
2017 GMC Sierra 3500 HD Denali
2017 GMC Sierra 3500 HD SLE
2017 GMC Sierra 3500 HD SLT

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Testing
Regular Stock: t
Units Per Sku: 1