DIESELR Signature EGR Upgrade Kit (2017-2026 Duramax 6.6L L5P)The Dieselr Signature L5P EGR Upgrade Kit is manufactured in the USA (with select globally sourced components) and built for clean installs, repeatable sealing, and long term durability on GMs 20172026 6. 6L Duramax (L5P). Precision CNC machined 6061 T6 aluminum and 304 stainless components deliver an OEM grade fit without the clutter. Block off plates feature a black anodized billet finish with laser engraved DIESELR logos, paired with machined
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