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Wehrli Custom Fab 3.5-inch high-flow passenger-side intercooler pipe for 2017-2019 L5P 6.6L Duramax (Chevrolet Silverado/GMC Sierra 2500/3500) replaces the factory plastic two-piece with a 14-gauge one-piece aluminum pipe. It uses a CNC-machined flange with double O-ring seals, upgraded silicone boot and stainless t-bolt clamps to resist boost leaks and fits stock trucks with no tuning required.
Wehrli 17-19 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - Candy Teal
