Wehrli 20-24 Chevrolet 6.6L L5P Duramax Passenger Side 3.5in Intercooler Pipe - WCFab Red

If you're working on a 2020-2025 Chevrolet Silverado 2500 HD or 3500 HD, or a similar GMC Sierra, with the 6.6L L5P Duramax engine, this passenger side intercooler pipe from Wehrli Custom Fabrication is a solid upgrade over the factory plastic component. The stock two-piece plastic pipe can be a weak point, especially when running higher boost pressures, leading to leaks or even blown boots. This Wehrli pipe addresses that by replacing it with a single, larger 3.5-inch diameter pipe made from durable 14-gauge aluminum.

What sets this pipe apart is its construction designed for better sealing and higher boost. It features a CNC machined flange with a double O-ring seal, which creates a much more reliable connection than the factory setup. It also includes an upgraded silicone boot and a black anodized billet aluminum adapter, along with T-bolt clamps and O-rings, all working together to prevent boost leaks and ensure the factory boots don't fail under pressure. This pipe is designed to be a direct bolt-on replacement, meaning you won't need any extra modifications, tuning, or upgrades to install it, and it even includes a threaded bung to reuse your OEM intake temperature sensor.