Wehrli 03-07 Cummins 5.9L D/S 3.5in. Intake Horn IC Pipe - Bengal Red

When you're looking to get the most out of your 2003-2007 Dodge Ram 2500 with the 5.9L Cummins engine, improving airflow from the turbo to the cylinders is a smart move. The factory plastic intercooler pipe and cast intake horn can be a bottleneck, especially if you're pushing more boost. This kit from Wehrli replaces those restrictive components with a larger, smoother-flowing setup designed to help your engine breathe easier.

This kit swaps out the stock 3-inch plastic intercooler pipe for a beefy 3.5-inch aluminum pipe, and the factory intake horn is replaced with a mandrel-bent 3.5-inch elbow. This significantly increases the volume and smooths out the airflow path. The elbow is welded to a CNC-machined aluminum flange that mates up perfectly with the WCFAB Grid Intake spacer, ensuring optimal air delivery into the cylinder head. The flange also includes two 1/8" NPT ports, handy for boost gauges or water-methanol injection, and a mounting point for the factory wire harness clamp. Plus, there's a dedicated bung to secure your oil dipstick tube, keeping things tidy and in place. High-quality, 5-ply silicone boots and stainless steel t-bolt clamps are included to connect the pipe to the intercooler and the horn, so you won't need to reuse any worn-out factory rubber parts.

The entire assembly is finished in a durable Bengal Red powder coat for a sharp look that stands up to the engine bay environment. This is a bolt-on upgrade that doesn't require any tuning, and it's designed to fit your stock truck without needing other modifications. It's a well-built kit that addresses common weak points in the factory setup and aims to improve performance by letting your Cummins breathe better.