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3.5" Turbo Downpipe for 2017–2025 Chevy Silverado & GMC Sierra 2500HD/3500HD 6.6L L5P Duramax Pickups

SKU: FLES08074

$219.00
Style: Silver
Checking fitment...
SKU: FLES08074
⚠ Please verify full vehicle fitment before placing your order.
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3.5

3.5" Turbo Downpipe for 2017–2025 Chevy Silverado & GMC Sierra 2500HD/3500HD 6.6L L5P Duramax Pickups

1 Item · Silver · SKU: FLES08074

$219.00

Total: 5 Items $219.00

Product Specifications

3.5-Inch L5P Turbo Downpipe for 2017–2025 Silverado and Sierra HD Pickups

For listed 2017–2025 Chevrolet Silverado and GMC Sierra 2500HD/3500HD pickups with the 6.6L L5P Duramax turbo diesel, this downpipe replaces the turbo outlet section with a 3.5-inch bent tube. It gives shoppers a defined replacement section with a four-bolt turbo end and V-band exhaust end; verify both connections against the original pipe before ordering.

Specifications

Specification Details
Part type Turbo outlet downpipe
Nominal pipe diameter 3.5 in
Engine 6.6L V8 L5P Duramax turbo diesel
Turbo end Four-bolt flange with installed studs
Exhaust end V-band connection
Finish options Silver or black

Key Features

  • Turbo outlet replacement section: Identifies the part of the exhaust being replaced when comparing it with the original assembly.
  • Bent 3.5-inch tube: Gives a clear size and routing reference for checking the space behind the turbo.
  • Four-bolt turbo flange with installed studs: Provides a specific upstream connection to compare with the original flange.
  • V-band exhaust connection: Provides a specific downstream connection to compare with the original exhaust.
  • Welded construction: Keeps the flange and tube joined as a single replacement assembly.
  • Silver and black finishes: Lets buyers choose the visible finish after confirming the vehicle and connections.

What’s Included and Not Included

  • Standard downpipe selection: one 3.5-inch turbo downpipe in the selected finish, one roll of exhaust heat wrap and two retaining clamps or ties.
  • The standard selection does not include a complete DPF, EGR or DEF system kit. Combination selections shown on this page contain different parts; inspect the selected option’s package listing.

Check Before Ordering

  • Match the year, trim, cab and drive in the fitment table.
  • Cab & Chassis fitment is unresolved. Ask Flashark to verify your specific vehicle before ordering.
  • Compare the four-bolt turbo flange, V-band end, routing, mounting points and any sensor ports with the original pipe. Confirm how this part connects to your truck’s retained exhaust and emissions equipment.
  • Check the chosen variant’s package photo and parts list. Factory hardware may need to be reused.
  • Confirm applicable use requirements for your vehicle and location before purchase.

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.