MBRP

MBRP 3in Turbo Downpipe 2015.5-2016 GM 6.6L Duramax LML Aluminized

SKU: mbrpGM8428 UPC: 882963123381
In stock - 14 items available
$364.40

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Verified Fitment & Application Support

This product is selected for proper fitment and compatibility with the listed engine application. Our team is available to assist with fitment questions, installation considerations, and supporting components to ensure a smooth install and reliable performance.

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Compliance & Restrictions
California Proposition 65 (Prop 65)
WARNING: This product can expose you to chemicals which is known to the State of California to cause cancer and/or reproductive harm. For more information, visit www.P65Warnings.ca.gov.
CARB / California Emissions Compliance
This item may be restricted in California and other regions with emissions regulations. If applicable, it is intended for competition/off-road use only unless otherwise stated. It is the customer’s responsibility to confirm local compliance before purchase. Orders shipping to restricted areas may be canceled.

The MBRP GM8428 replaces the restrictive factory downpipe on the late LML Duramax with a 3-inch mandrel-bent aluminized downpipe. Opening up the path directly off the turbo drops exhaust gas temperatures and frees up power, and because the DPF stays in place the system does not affect emissions equipment.

Key Features

  • Approximately 20 percent greater flow than the factory downpipe
  • Gains of 21 horsepower and 24 lb-ft of torque
  • Lower exhaust gas temperatures and a deeper diesel tone
  • Direct fit to the updated GM 3-bolt inlet DPF
  • Retains the diesel particulate filter and does not affect emissions

Fitment

2015.5-2016 Chevrolet and GMC 2500HD / 3500HD with the 6.6L Duramax LML. Works only with the 3-bolt flange style connection used on 2015.5 and later trucks. Not legal for sale or use in California.

Product Details

  • Manufacturer Part Number: GM8428
  • Brand: MBRP
  • Tubing Size: 3 inch
  • Material: Aluminized steel
  • Note: exhaust gasket is not included

Shipping Height: 7.9

Shipping Length: 22.2

Shipping Width: 13.4

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