Flashark LML Duramax downpipes are designed to seamlessly replace your restrictive stock downpipes, which are located right after your catalytic converters. These upgraded 6.6L LML Duramax downpipes significantly enhance horsepower and torque on turbocharged vehicles by allowing exhaust gases to flow more freely as they exit the turbocharger. The high-quality, precision-engineered downpipe improves exhaust airflow, leading to a smoother and more efficient engine performance, ensuring a better driving experience.
Specifications:
Brand Name: FLASHARK
Certificate: ISO9001:2000
Application: Exhaust Down Pipe
Material: Stainless Steel
Surface: Mirror Polish
Model: DP29758 (ES08319)
Made of High-Quality T-304 Stainless Steel
Inlet/ Outlet Sizes: 3 ''OD / 3 ''OD
Pipe Diameter: 3.0''
Flange Type: V-band
Increases Horsepower 10-15 HPS (approximately)
Package Contents:
1 x 3" Stainless Steel Downpipe
2 x Stainless Steel Hose Clamps
1 x Roll of Titanium Heat Wrap
Features:
1. Improve Engine Output and Efficiency, Give you an extra HPs, and increases torque
2. Large diameter and free flow tubing for unrestricted flow, Making the exhaust air flow smooth, Designed for high-performance racing
3. Made of High-Quality 16-gauge T-304 Stainless Steel with Computerized Mandrel-Bends
4. All joints are TIG welded to prevent cracking and wear
5. CNC Machine Flange for MAX Strength and Durability
6. Flanges chrome plated for corrosion resistance
Confirmed compatible — 2011–2015 GM HD trucks equipped with the 6.6L LML Duramax turbo-diesel V8 engine:
| Year |
Make |
Model |
Engine |
| 2011–2015 |
Chevrolet |
Silverado 2500 HD |
6.6L V8 LML Duramax Turbo Diesel |
| 2011–2015 |
Chevrolet |
Silverado 3500 HD |
6.6L V8 LML Duramax Turbo Diesel |
| 2011–2015 |
GMC |
Sierra 2500 HD |
6.6L V8 LML Duramax Turbo Diesel |
| 2011–2015 |
GMC |
Sierra 3500 HD |
6.6L V8 LML Duramax Turbo Diesel |
Important: This product is for 6.6L LML Duramax applications only. Confirm your exact year, model, engine, and emissions configuration before ordering.
Not confirmed by the supplied fitment data: 2016 models, non-HD trucks, gasoline engines, and other Duramax generations.
Q: Does this downpipe fit a 2016 LML Duramax truck?
A: The supplied fitment data confirms 2011–2015 applications only. Please contact Flashark with your exact 2016 vehicle information before ordering.
Q: Does this fit both Chevrolet and GMC trucks?
A: Yes. Confirmed applications include 2011–2015 Chevrolet Silverado 2500 HD / 3500 HD and GMC Sierra 2500 HD / 3500 HD trucks with the 6.6L LML Duramax turbo-diesel engine.
Q: Is this an intercooler pipe kit?
A: No. This product package includes a 3-inch stainless steel downpipe, two stainless steel hose clamps, and titanium heat wrap. It does not include an intercooler pipe.
Q: Does this fit every 6.6L Duramax engine?
A: No. This downpipe is intended for confirmed 6.6L LML Duramax applications only. Do not order based on engine displacement alone; Duramax exhaust configurations vary by generation.
Q: Does the package include installation hardware?
A: The package includes two stainless steel hose clamps and titanium heat wrap. Please review the product images and package list before installation to confirm any additional vehicle-specific hardware you may need.
Q: Is this product legal for street use?
A: Diesel emissions regulations vary by location and vehicle configuration. Customers are responsible for confirming local legal and emissions-compliance requirements before purchase and installation.
Easy Return Policy
Every order comes with a 30-day free return, provided the item is brand new, uninstalled, and in its original packaging. We cover return shipping for quality issues. Refunds are processed within 3-5 business days. Click for Return Policy
