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The WCF 4" intake resonator pipe by Wehrli Custom Fab for 2020–2025 L5P 6.6L Duramax Silverado and Sierra 2500/3500 HD trucks swaps the factory plastic resonator box for a mandrel-bent aluminum pipe to reduce restriction and tidy the engine bay. It removes silencers for a more aggressive sound, retains the OEM air filter panel and box for ease of maintenance, is bolt-on with no tuning required, and installs with basic hand tools.
Wehrli 2020-2024 Chevrolet 6.6L L5P Duramax 4in Intake Pipe (Use w/OEM Air Box) - WCFab Red
