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The Wehrli WCFab Stage 2 High Flow Bundle Kit for 2017–2019 L5P Duramax replaces restrictive factory intake and intercooler piping with a 4 in. intake, enlarged intake horn and 3"/3.5" intercooler pipes. The kit is a bolt-on assembly retaining factory sensors and connections, improves intake velocity and turbo response, and includes CNC flanges with double O-rings and heavy-duty silicone boots. Wehrli reports a 25 hp gain with a 4 in. turbo inlet when used with a Max Effort Tune.
Wehrli 17-19 Chevrolet 6.6L L5P Duramax High Flow Intake Bundle Kit Stage 2 - Bengal Blue
