HIGH FLOW DOWNPIPE 

Wehrli Custom Fabrication 2011-2016 LML Duramax 3" Down Pipe - WCF100121

*Features:*

- 3" Down Pipe

- Heat Wrap

- Black High Temp Ceramic Coating

- No tuning required!

*Availability:*

In Stock. Ships in 3-5 business days.

*Description:*

Upgrade the restrictive factory turbo down pipe/exhaust front pipe on your 6.6L Duramax Diesel V8 (2011-2016 Chevrolet Silverado / GMC Sierra 2500 / 3500 HD) with this high-flow, heat-wrapped, high temp ceramic coated full 3" steel down pipe.

Designed for use with OEM or factory-style drop-in turbochargers, this down pipe ensures better exhaust flow, reducing backpressure and improving turbo spool-up. No tuning is required, making the installation straightforward and hassle-free.

This down pipe is made from high-quality materials and features a black high-temp ceramic coating that withstands extreme exhaust temperatures. The included heat wrap helps manage under-hood temperatures, protecting surrounding components and enhancing overall engine performance.

Replacing the factory crushed down pipe with this high-flow alternative can result in noticeable improvements in horsepower and torque, as well as lower exhaust gas temperatures (EGTs). This upgrade is ideal for those looking to enhance their vehicle's performance without extensive modifications.

*Technical Details:*

- Material: Steel

- Coating: High Temp Ceramic

- Diameter: 3"

- Compatibility: 2011-2016 Chevrolet Silverado / GMC Sierra 2500 / 3500 HD with 6.6L Duramax Diesel V8

*Benefits:*

- Improved Performance: Optimizes exhaust flow, reducing backpressure and enhancing turbo spool-up for increased horsepower and torque.

- Enhanced Durability: The black high-temp ceramic coating and heat wrap ensure the down pipe can withstand high exhaust temperatures, reducing under-hood heat.

- Lower Exhaust Gas Temperatures (EGTs): By improving exhaust flow, the down pipe helps lower EGTs, contributing to better engine health and longevity.

- Easy Installation: No tuning required, making this a simple bolt-on upgrade.

- Compatibility: Works with both OEM and factory-style drop-in turbochargers, making it a versatile and convenient upgrade.

*Additional Notes:*

Replaces the following GM Part Numbers: 12643610, 12638304, 12643214

Note: 2015.5 and newer LML have a 3 bolt flange exhaust system, this down pipe will only work if you use a 2011-2014 style exhaust system with v-band connection. Or you can use our 3 Bolt Flange Stainless Down pipe PN: WCF100705

- The high-temp ceramic coating not only provides heat resistance but also adds a layer of protection against corrosion, extending the life of the down pipe.

- The included heat wrap reduces the heat radiated from the down pipe, helping to keep under-hood temperatures in check and protecting nearby components from heat damage.

- By reducing backpressure, the engine can breathe easier, leading to more efficient combustion and better overall performance.