Wehrli 03-07 Dodge 5.9L Cummins 3.5in Intake Horn & Driver Side Intercooler Pipe Kit - Bengal Blue

If you're working on your 2003-2007 Dodge 5.9L Cummins and looking to improve how air gets into your engine, this Wehrli intake horn and intercooler pipe kit is a solid choice. The factory plastic intercooler pipe and restrictive intake horn can be a bottleneck, especially if you've made other upgrades to your turbo system. This kit replaces those parts with larger, mandrel-bent aluminum pieces designed to let your engine breathe easier.

The kit features a 3.5-inch diameter intake horn and a matching 3.5-inch intercooler pipe, a significant increase over the stock 3-inch pipe and the horn’s narrow opening. This improved airflow can lead to better throttle response and more efficient combustion. The intake horn is welded to a CNC-machined aluminum flange that mates directly to the cylinder head, and it includes two 1/8" NPT ports for boost gauges or water-methanol injection systems. It also has a dedicated spot to secure the factory oil dipstick tube and wire harness clamp, keeping things tidy. The intercooler pipe and intake horn are finished in a durable Bengal Blue powder coat for a clean look.

Everything you need for installation is included, such as high-quality 5-ply silicone boots and stainless steel t-bolt clamps, so you won't need to reuse any old, worn-out rubber parts. This kit is designed as a direct bolt-on replacement and does not require any tuning to function properly. It’s a well-built upgrade that addresses common airflow restrictions in the 5.9L Cummins engine.