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Gibson

Gibson 15-19 GMC Sierra 2500 HD Base 6.6L 4in Filter-Back Single Exhaust - Stainless

$1,096.88 $477.76 Save $619.12

SKU: G003 615623

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Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Description

Part #: 615623

You can expect significant gains in horsepower and torque, and a lower exhaust gas temperature.

Features:

  • Stainless Steel Mandrel Bent Tubing
  • Incl. Muffler Delete Pipe
  • Polished Tip - Weld On
  • Incl. Hardware/Factory Style Hangers For Easy Install
  • Lifetime Limited Warranty

Filter-Back Single Exhaust System | Stainless

This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.

MIA's Description

The Gibson 615623 is a single side filter-back exhaust system for 2011-2019 Chevy Silverado and GMC Sierra 2500HD/3500HD 6.6L Diesel trucks. It features 4-inch 409 stainless steel mandrel-bent tubing and a 6-inch polished T304 stainless steel round tip. This system delivers 10-15 horsepower and 15-20 lb-ft of torque gains at low RPM.

Fitment

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandGibson
Part NumberG003 615623

Buy with Confidence

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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