Frequently Bought Together
Flashark 3" Turbo Downpipe for 2011–2015 Chevy Silverado & GMC Sierra 2500HD/3500HD 6.6L LML Duramax
1 Item · 2011-2015 Sliver · SKU: FLES08046
$118.00
Product Specifications
3-Inch LML Duramax Turbo Downpipe for Silverado and Sierra HD
Replace the factory turbo downpipe on compatible 2011–2015 Chevrolet Silverado 2500HD/3500HD and GMC Sierra 2500HD/3500HD trucks with a 6.6L LML Duramax engine and V-band connection. This Flashark downpipe sits immediately after the turbocharger and provides a smoother 3-inch exhaust path. Select the later connection variant only after checking the joint on your truck.
Mandrel-bent T-304 stainless steel, TIG-welded joints and the included thermal wrap are designed for heat and vibration behind the turbocharger. This downpipe alone does not remove the truck's DPF, DOC, DEF or SCR equipment.
Specifications
| Specification | Details |
|---|---|
| Product type | Turbo downpipe |
| Pipe diameter | 3 inches |
| Material | T-304 stainless steel |
| Construction | Mandrel-bent, TIG-welded |
| Base variant connection | V-band, FLES08046 |
| DPF delete | No, for the downpipe alone |
Key Features
- 3-inch exhaust path: Replaces the narrow, crushed factory downpipe section with a larger, smoother route immediately after the turbocharger.
- Mandrel-bent tubing: Helps maintain internal diameter through the bends.
- TIG-welded T-304 stainless steel: Designed to resist exhaust heat, corrosion and vibration.
- V-band base option: Connects to the compatible original-style LML turbo outlet; confirm the truck's joint before ordering.
- Thermal wrap: Helps manage radiant heat around the rear of the engine and firewall.
What to Expect
- Reduced restriction immediately after the turbocharger
- Smoother flow through the downpipe
- Potentially quicker turbo response
- A slightly more noticeable turbo and exhaust sound
- Support for compatible intake, exhaust and tuning upgrades
Performance Notice: Actual results depend on the vehicle's condition, turbocharger, downstream exhaust, ECU calibration and other modifications. A specific horsepower, torque or fuel-economy increase is not guaranteed.
What Is Included
- One selected turbo downpipe
- Gasket(s) and mounting hardware, as described for the base downpipe
- Thermal wrap and clamps, as described in the existing product FAQ
Check Before Ordering
- Confirm the 6.6L LML engine, model year, vehicle model and actual turbo/downpipe joint. The 2011–2015 V-band option does not directly fit a truck with the later bolt flange. Some late-2015 trucks use that later connection.
- Choose the 2015.5–2016 variant only if its flange matches your truck. A 2016 search result does not make the default 2011–2015 V-band option compatible.
- Fitment for Chevrolet Express, GMC Savana, cab-and-chassis trucks and non-factory-style turbo outlets needs separate confirmation; the existing base-option Fitment tab does not confirm them. LB7, LLY, LBZ, LMM and L5P engines are outside its stated LML scope.
- Combination options add an up-pipe, EGR kit or intercooler components according to the selected variant. Verify each component and its vehicle fit before checkout; the base downpipe description does not establish fit for the entire bundle.
- A downpipe-only installation retains compatible downstream DPF, DOC, DEF and SCR equipment. Verify the truck's downstream connection and applicable local requirements before purchasing or installing.
- Professional installation is recommended because access behind the turbocharger is limited. Let the engine and exhaust cool, then inspect and test-fit the product before wrapping, modifying or fully installing it.
Shipping & Returns
Free U.S. Shipping: Orders are typically processed within 1–2 business days and delivered within 7–9 business days. Additional charges may apply to remote areas.
30-Day Returns: Unopened and unused items in their original packaging may be returned within 30 days of receipt. Return shipping is covered for verified quality issues.
Worry-Free Delivery: Optional protection against eligible loss, theft, delay, or transit damage is available at checkout.
