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Wehrli's 3.5" high-flow passenger-side intercooler pipe for 2020–2025 Duramax L5P replaces the factory plastic two-piece with a one-piece 14 ga. aluminum tube. It uses a CNC-machined flange with double O-rings, upgraded silicone boot and billet adapter to withstand higher boost pressures and reduce blown boots and leaks. Bolt-on fitment requires no tuning or other modifications on stock trucks.
Wehrli 20-25 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - Brizzle Blue