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Wehrli

Wehrli 04-05 Duramax (LLY) Passenger Side 3in Intercooler Pipe - Red

$330.00 $320.10 Save $9.90

SKU: W005 WCF100355-RED

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

If you’re running more boost or just want to eliminate common failure points in your 2004.5 to 2010 Duramax, the Wehrli 100352 3 Inch Driver Side Intercooler Pipe is a smart upgrade with real-world benefits. The factory 2.5 inch pipe not only restricts flow, but it also uses a reverse bead roll at the turbo that’s known for blowing off under higher boost pressures. Wehrli’s solution is a one-piece, high-flow 3 inch pipe that replaces the stock setup with stronger materials and a more reliable design. It’s built for LLY, LBZ, and LMM trucks, and fits seamlessly without the need for tuning, making it an easy bolt-on for anyone looking to improve reliability and airflow. This intercooler pipe comes complete with straight, high-pressure silicone boots and heavy-duty T-bolt clamps that keep everything locked down tight, even under load. No more angled boots or loose fittings that work themselves free over time. The pipe itself is powder coated for long-lasting durability and a clean look under the hood. It’s the kind of upgrade that doesn’t just support higher performance—it makes your setup more dependable for daily driving, towing, or track use. Whether you're replacing a worn stock component or building a stronger, more responsive charge system, this pipe adds the strength and flow you didn’t know you were missing.
Show original supplier description

Part #: WCF100355-RED

The 3" High Flow Passenger Side Intercooler Pipe for 2004.5-2005 LLY Duramax replaces the 2.5" one piece pipe using an angled boot with a high flow, mandrel bent, 14 ga. aluminum one piece 3" pipe. This part uses upgraded silicone boots in order to withstand higher boost pressures than the factory components to increase reliability and eliminate blown factory boots and horsepower robbing boost leaks. Boot connection is straight at the intercooler unlike the angled factory boot connection. Finished in your choice of custom powder colors. This pipe is compatible with stock trucks requiring no additional modifications, upgrades, or tuning for installation. Improves airflow between the turbo and engine for improved efficiency, throttle response, and turbo spool up. Eliminates weak points in the factory design that can lead to boost leaks or complete failures in hard working and high performance applications. Installs easily with basic hand tools. Pairs best with emissions compliant tuning and drop in turbochargers for optimum performance gains.

Wehrli Custom Fab Passenger Side 3 in. Intercooler Pipe, 04.5-05 Duramax LLY, WCFab Red

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandWehrli
Part NumberW005 WCF100355-RED
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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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