3.5'' Downpipe Exhaust For 2017-2023 Chevy/GMC Silverado/ Sierra L5P Duramax Diesel 6.6L

Flashark 3.5'' Downpipe Exhaust For 2017-2023 Chevy/GMC Silverado/ Sierra L5P Duramax Diesel 6.6L

Unlock the full potential of your L5P Duramax 6.6L engine with the Flashark 3.5" Downpipe Exhaust. Designed specifically for the 2017-2023 Chevy and GMC models, this high-flow downpipe improves exhaust flow, reduces turbo lag, and increases horsepower. Made from durable stainless steel with a mirror-polished finish, it optimizes turbocharger efficiency and boosts engine performance. Perfect for those looking to enhance their L5P Duramax 6.6L's power, responsiveness, and overall driving experience. Whether you're towing or racing, this downpipe is the ideal upgrade for your engine.

Specifications:

Brand Name: Flashark
Application:  Downpipe Exhaust
Material: Stainless Steel
Surface: Mirror Polish

Features:

3.5" Stainless Steel Piping
20% better flow than the factory pipe
Heat wrap included keeping engine bay temperatures down
Greater heat-retention
Will not affect emissions systems
Maximum flow for competition applications
4-bolt flange, two studs installed

What Does the Downpipe Do for Your L5P Duramax 6.6L Engine?

The downpipe is a critical part of your Duramax 6.6L diesel engine, responsible for channeling exhaust gases from the turbocharger turbine housing into the exhaust system. When upgraded, the downpipe typically features a larger diameter than the factory version, which allows for improved exhaust flow. Some high-performance versions also replace or eliminate the catalytic converter for even better efficiency.

By swapping out the factory downpipe for a high-flow option, you allow your engine to expel exhaust gases more efficiently, reducing turbo lag and increasing horsepower. The stock downpipe can act as a bottleneck, restricting exhaust flow and limiting engine performance. An upgraded L5P downpipe removes this restriction, enabling quicker turbo spool, higher boost levels, and ultimately unlocking more power from your Duramax diesel engine.

Why Choose the Flashark Downpipe?

If you’re looking for a complete, high-performance downpipe for your L5P Duramax 6.6L, the Flashark 3.5" Downpipe is the clear choice. Designed specifically for 2017-2023 Chevy and GMC Silverado and Sierra 2500/3500HD trucks, this kit improves exhaust flow, reduces turbo lag, and increases horsepower—without any extra modifications or tuning.

Whether you call it the Flashark Downpipe, the 3.5" high-flow exhaust, or simply a reliable Duramax performance upgrade, this all-in-one kit is engineered for maximum turbo efficiency, easy installation, and lasting durability, while maintaining compatibility with your emissions system.

What is the L5P Duramax 6.6L Engine?

The L5P Duramax is a turbocharged diesel engine introduced by GM for their 2017-2023 Chevy and GMC trucks. Known for its impressive power output of up to 445 horsepower and 910 lb-ft of torque, the L5P engine is a significant upgrade over its predecessors. With improved fuel efficiency, enhanced emissions control, and a more robust design, the L5P provides optimal performance for both everyday driving and heavy-duty applications. The engine also features advanced turbocharging technology that benefits greatly from high-flow aftermarket components, such as the Flashark Downpipe.