Wehrli 03-07 Dodge Cummins 5.9L 3.5in Intake Horn w/Driver IC Pipe - Illusion Purple

If you're working on a 2003-2007 Dodge Ram with the 5.9L Cummins engine, this Wehrli Custom Fabrication intake horn and intercooler pipe kit is a solid upgrade over the factory plastic components. The stock setup can be restrictive, especially the intake horn which necks down significantly. This kit replaces that with a full 3.5-inch mandrel-bent aluminum elbow and a matching 3.5-inch intercooler pipe, designed to improve airflow into your engine's cylinder head.

This kit is built with durability in mind. The intercooler pipe is made from heavy-duty 14-gauge aluminum, and the intake horn features a CNC-machined aluminum flange that mates directly to the cylinder head. This flange also includes two 1/8" NPT ports for boost reference or water-methanol injection, plus an 8mm port for the factory wire harness clamp and a bung for the oil dipstick tube. The kit comes complete with new hardware, high-quality 5-ply silicone boots, and stainless steel T-bolt clamps, so you won't need to reuse any worn-out factory parts. The entire assembly is finished with a durable Illusion Purple powder coat.

This is a direct bolt-on replacement that doesn't require any tuning. It's designed to work with the stock grid heater or other intake plates, though it pairs best with Wehrli's own billet intake spacer kit for optimal flow. You'll get about 60% more flow compared to the stock setup, which can make a noticeable difference in how your engine breathes.