Duramax 6.6 Polar Exhaust Installation Guide (2017–2026)

Off-road / competition use only where emissions rules apply. Emissions-related deletes and DPF-off configurations are not for vehicles operated on public roads or highways subject to those regulations. Confirm local laws before purchase or install. Not legal advice.

This page is Polar Diesel’s HTML overview for installing 2017–2026 Duramax 6.6L Polar exhaust systems. Confirm pipe size and year fitment on the product page, then follow the official exhaust PDF. For 2011–2016 trucks, use the separate year-split guide. DPF-back systems use a different PDF on the instructions hub.

Download official Duramax 6.6 (2017–2026) exhaust install PDF

← All Polar Diesel install guides (QR / instructions hub)

High-level steps

  1. Confirm year (2017–2026), cab/bed config, pipe diameter, and legal intended use.
  2. Read the Polar Duramax 6.6 2017–2026 exhaust PDF end-to-end.
  3. Support the vehicle safely; allow the exhaust to cool completely.
  4. Remove factory components per PDF; install Polar tubing/sections in documented order.
  5. Torque/clamp as specified, check clearances, complete required tuning, and test for leaks/rattles off-road where permitted.

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