Wehrli 100349 3 inch Drivers Side Intercooler Pipe | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Features: - Fits 2001–2004 6.6L Duramax LB7 - Replaces factory driver side intercooler pipe - Full 3-inch intake tract design - Includes high-pressure silicone boots - Comes with heavy-duty T-bolt clamps - No tuning required after installation - Works with S400 and Y-Bridge kits - Straight boot design for better sealing - Durable powder-coated finish - Improves airflow to the engine - Designed for high-boost applications A Clean Upgrade for Boosted Performance If you're looking to tighten up your charge air system and clean up the engine bay on your LB7 Duramax, the Wehrli 100349 3-Inch Driver Side Intercooler Pipe is a solid solution. Designed for 2001–2004 Silverado and Sierra 2500HD/3500HD trucks, this pipe replaces the restrictive factory setup with a full 3-inch intake tract from the turbo to the engine. The difference is noticeable—stronger airflow, more consistent boost, and a cleaner, more direct route for charged air. It’s especially ideal if you’re running Wehrli’s S400 over stock twin turbo kit or their LB7 Y-Bridge, as this pipe complements both systems perfectly without the need for tuning. Built to Handle the Pressure, Designed to Fit Right This isn’t just a cosmetic upgrade. Wehrli uses straight, high-pressure rated silicone boots instead of the angled factory ones, which improves reliability and eliminates one of the more common failure points in high-boost applications. Heavy-duty T-bolt clamps are included to lock everything down and hold boost without slipping under pressure. The powder-coated finish adds durability and a sharp look that holds up in harsh engine bay environments. Whether you’re fine-tuning a performance build or just replacing worn-out stock parts, this pipe offers a straightforward install and a noticeable improvement in how your truck breathes and responds under load. It’s a clean, durable, and functional upgrade that does its job well without needing extra tuning or hassle. Fits: 2001, 2002, 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7