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The Wehrli Stage 2 High Flow intake bundle for 2017–2019 Duramax L5P combines a 4" aluminum turbo inlet, airbox with dry filter and pre-filter cover, and heavy-duty intercooler piping to improve airflow and throttle response. Compatible with stock trucks with bolt-on installation, it removes factory weak points and improves turbo spool; Wehrli reports a 25 HP gain with the 4" inlet when paired with a Max Effort Tune.
Wehrli 17-19 Duramax L5P Stage 2 High Flow Bundle Kit - Illusion Blueberry
