Wehrli 100654 2 inch Stainless Passenger Up Pipe with Gaskets (Single Turbo) | 2001-2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7

Features:

• Fits 2001–2004 GM 6.6L Duramax LB7
• For Silverado and Sierra 2500HD/3500HD
• Designed for single turbo applications
• Clearances a conventional downpipe
• Compatible with factory exhaust manifold
• Constructed from 11-gauge stainless steel
• Heavy-duty stainless bellow resists cracking
• Improves turbo spool-up and throttle response
• Helps reduce exhaust gas temperatures
• Can be used with twin turbo setups
• Includes high-quality gaskets for installation

Built for Strength Where It Matters Most

When you're chasing reliability and performance in your LB7 Duramax, the stock up pipe can quickly become a weak link. The Wehrli 100654 2-inch Stainless Passenger Up Pipe is designed to fix that. This upgraded unit replaces the thin, failure-prone factory pipe with a robust 11-gauge stainless steel build that’s made to handle the heat and pressure of real-world driving. Whether you're towing heavy loads or running performance upgrades, this pipe helps improve turbo spool-up and reduce exhaust gas temperatures—something any diesel owner can appreciate when trying to keep temps in check under load.

Designed for Real-World Fit and Function

This version is specifically crafted for single turbo setups and features a bend profile that provides proper clearance for a conventional downpipe, making installation smoother and fitment more precise. The HD stainless bellow is built to flex without cracking, even under harsh conditions. It's also compatible with compound or twin turbo configurations, giving you some flexibility if your setup changes down the road. Gaskets are included to make this a ready-to-install solution right out of the box, so you can get back on the road with confidence and peace of mind.

Fits: 2001, 2002, 2003, 2004 GM Silverado/Sierra 2500HD/3500HD 6.6L Duramax LB7